Adding upstream version 43.0.upstream/43.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3561 insertions, 0 deletions

diff --git a/plugins/power/gsd-power-manager.c b/plugins/power/gsd-power-manager.c
new file mode 100644
index 0000000..757986e
--- /dev/null
+++ b/plugins/power/gsd-power-manager.c
@@ -0,0 +1,3561 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Copyright (C) 2007 William Jon McCann <mccann@jhu.edu>
+ * Copyright (C) 2011-2012, 2015 Richard Hughes <richard@hughsie.com>
+ * Copyright (C) 2011 Ritesh Khadgaray <khadgaray@gmail.com>
+ * Copyright (C) 2012-2013 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+#include <libupower-glib/upower.h>
+#include <libnotify/notify.h>
+#include <canberra-gtk.h>
+#include <glib-unix.h>
+#include <gio/gunixfdlist.h>
+
+#define GNOME_DESKTOP_USE_UNSTABLE_API
+#include <libgnome-desktop/gnome-rr.h>
+#include <libgnome-desktop/gnome-idle-monitor.h>
+
+#include <gsd-input-helper.h>
+
+#include "gsd-power-constants.h"
+#include "gsm-inhibitor-flag.h"
+#include "gsm-presence-flag.h"
+#include "gsm-manager-logout-mode.h"
+#include "gpm-common.h"
+#include "gsd-backlight.h"
+#include "gnome-settings-profile.h"
+#include "gnome-settings-bus.h"
+#include "gsd-enums.h"
+#include "gsd-power-manager.h"
+
+#define GSD_DBUS_NAME "org.gnome.SettingsDaemon"
+#define GSD_DBUS_PATH "/org/gnome/SettingsDaemon"
+#define GSD_DBUS_BASE_INTERFACE "org.gnome.SettingsDaemon"
+
+#define UPOWER_DBUS_NAME                        "org.freedesktop.UPower"
+#define UPOWER_DBUS_PATH                        "/org/freedesktop/UPower"
+#define UPOWER_DBUS_PATH_KBDBACKLIGHT           "/org/freedesktop/UPower/KbdBacklight"
+#define UPOWER_DBUS_INTERFACE                   "org.freedesktop.UPower"
+#define UPOWER_DBUS_INTERFACE_KBDBACKLIGHT      "org.freedesktop.UPower.KbdBacklight"
+
+#define PPD_DBUS_NAME                           "net.hadess.PowerProfiles"
+#define PPD_DBUS_PATH                           "/net/hadess/PowerProfiles"
+#define PPD_DBUS_INTERFACE                      "net.hadess.PowerProfiles"
+
+#define GSD_POWER_SETTINGS_SCHEMA               "org.gnome.settings-daemon.plugins.power"
+
+#define GSD_POWER_DBUS_NAME                     GSD_DBUS_NAME ".Power"
+#define GSD_POWER_DBUS_PATH                     GSD_DBUS_PATH "/Power"
+#define GSD_POWER_DBUS_INTERFACE                GSD_DBUS_BASE_INTERFACE ".Power"
+#define GSD_POWER_DBUS_INTERFACE_SCREEN         GSD_POWER_DBUS_INTERFACE ".Screen"
+#define GSD_POWER_DBUS_INTERFACE_KEYBOARD       GSD_POWER_DBUS_INTERFACE ".Keyboard"
+
+#define GSD_POWER_MANAGER_NOTIFY_TIMEOUT_SHORT          10 * 1000 /* ms */
+#define GSD_POWER_MANAGER_NOTIFY_TIMEOUT_LONG           30 * 1000 /* ms */
+
+#define SYSTEMD_DBUS_NAME                       "org.freedesktop.login1"
+#define SYSTEMD_DBUS_PATH                       "/org/freedesktop/login1"
+#define SYSTEMD_DBUS_INTERFACE                  "org.freedesktop.login1.Manager"
+
+/* Time between notifying the user about a critical action and the action itself in UPower. */
+#define GSD_ACTION_DELAY 20
+/* And the time before we stop the warning sound */
+#define GSD_STOP_SOUND_DELAY GSD_ACTION_DELAY - 2
+
+/* The bandwidth of the low-pass filter used to smooth ambient light readings,
+ * measured in Hz.  Smaller numbers result in smoother backlight changes.
+ * Larger numbers are more responsive to abrupt changes in ambient light. */
+#define GSD_AMBIENT_BANDWIDTH_HZ       0.1f
+
+/* Convert bandwidth to time constant.  Units of constant are microseconds. */
+#define GSD_AMBIENT_TIME_CONSTANT       (G_USEC_PER_SEC * 1.0f / (2.0f * G_PI * GSD_AMBIENT_BANDWIDTH_HZ))
+
+static const gchar introspection_xml[] =
+"<node>"
+"  <interface name='org.gnome.SettingsDaemon.Power.Screen'>"
+"    <property name='Brightness' type='i' access='readwrite'/>"
+"    <method name='StepUp'>"
+"      <arg type='i' name='new_percentage' direction='out'/>"
+"      <arg type='s' name='connector' direction='out'/>"
+"    </method>"
+"    <method name='StepDown'>"
+"      <arg type='i' name='new_percentage' direction='out'/>"
+"      <arg type='s' name='connector' direction='out'/>"
+"    </method>"
+"    <method name='Cycle'>"
+"      <arg type='i' name='new_percentage' direction='out'/>"
+"      <arg type='i' name='output_id' direction='out'/>"
+"    </method>"
+"  </interface>"
+"  <interface name='org.gnome.SettingsDaemon.Power.Keyboard'>"
+"    <property name='Brightness' type='i' access='readwrite'/>"
+"    <method name='StepUp'>"
+"      <arg type='i' name='new_percentage' direction='out'/>"
+"    </method>"
+"    <method name='StepDown'>"
+"      <arg type='i' name='new_percentage' direction='out'/>"
+"    </method>"
+"    <method name='Toggle'>"
+"      <arg type='i' name='new_percentage' direction='out'/>"
+"    </method>"
+"    <signal name='BrightnessChanged'>"
+"      <arg name='brightness' type='i'/>"
+"      <arg name='source' type='s'/>"
+"    </signal>"
+"  </interface>"
+"</node>";
+
+typedef enum {
+        GSD_POWER_IDLE_MODE_NORMAL,
+        GSD_POWER_IDLE_MODE_DIM,
+        GSD_POWER_IDLE_MODE_BLANK,
+        GSD_POWER_IDLE_MODE_SLEEP
+} GsdPowerIdleMode;
+
+struct _GsdPowerManager
+{
+        GObject                  parent;
+
+        /* D-Bus */
+        GsdSessionManager       *session;
+        guint                    name_id;
+        GDBusNodeInfo           *introspection_data;
+        GDBusConnection         *connection;
+        GCancellable            *cancellable;
+
+        /* Settings */
+        GSettings               *settings;
+        GSettings               *settings_bus;
+        GSettings               *settings_screensaver;
+
+        /* Screensaver */
+        GsdScreenSaver          *screensaver_proxy;
+        gboolean                 screensaver_active;
+
+        /* State */
+        gboolean                 lid_is_present;
+        gboolean                 lid_is_closed;
+        gboolean                 session_is_active;
+        UpClient                *up_client;
+        GPtrArray               *devices_array;
+        UpDevice                *device_composite;
+        GnomeRRScreen           *rr_screen;
+        NotifyNotification      *notification_ups_discharging;
+        NotifyNotification      *notification_low;
+        NotifyNotification      *notification_sleep_warning;
+        GsdPowerActionType       sleep_action_type;
+        GHashTable              *devices_notified_ht; /* key = serial str, value = UpDeviceLevel */
+        gboolean                 battery_is_low; /* battery low, or UPS discharging */
+
+        /* Brightness */
+        GsdBacklight            *backlight;
+        gint                     pre_dim_brightness; /* level, not percentage */
+
+        /* Keyboard */
+        GDBusProxy              *upower_kbd_proxy;
+        gint                     kbd_brightness_now;
+        gint                     kbd_brightness_max;
+        gint                     kbd_brightness_old;
+        gint                     kbd_brightness_pre_dim;
+
+        /* Ambient */
+        GDBusProxy              *iio_proxy;
+        guint                    iio_proxy_watch_id;
+        gboolean                 ambient_norm_required;
+        gdouble                  ambient_accumulator;
+        gdouble                  ambient_norm_value;
+        gdouble                  ambient_percentage_old;
+        gdouble                  ambient_last_absolute;
+        gint64                   ambient_last_time;
+
+        /* Power Profiles */
+        GDBusProxy              *power_profiles_proxy;
+        guint32                  power_saver_cookie;
+        gboolean                 power_saver_enabled;
+
+        /* Sound */
+        guint32                  critical_alert_timeout_id;
+
+        /* systemd stuff */
+        GDBusProxy              *logind_proxy;
+        gint                     inhibit_lid_switch_fd;
+        gboolean                 inhibit_lid_switch_taken;
+        gint                     inhibit_suspend_fd;
+        gboolean                 inhibit_suspend_taken;
+        guint                    inhibit_lid_switch_timer_id;
+        gboolean                 is_virtual_machine;
+
+        /* Idles */
+        GnomeIdleMonitor        *idle_monitor;
+        guint                    idle_dim_id;
+        guint                    idle_blank_id;
+        guint                    idle_sleep_warning_id;
+        guint                    idle_sleep_id;
+        guint                    user_active_id;
+        GsdPowerIdleMode         current_idle_mode;
+
+        guint                    temporary_unidle_on_ac_id;
+        GsdPowerIdleMode         previous_idle_mode;
+
+        guint                    xscreensaver_watchdog_timer_id;
+};
+
+enum {
+        PROP_0,
+};
+
+static void     gsd_power_manager_class_init  (GsdPowerManagerClass *klass);
+static void     gsd_power_manager_init        (GsdPowerManager      *power_manager);
+
+static void      engine_device_warning_changed_cb (UpDevice *device, GParamSpec *pspec, GsdPowerManager *manager);
+static void      do_power_action_type (GsdPowerManager *manager, GsdPowerActionType action_type);
+static void      uninhibit_lid_switch (GsdPowerManager *manager);
+static void      stop_inhibit_lid_switch_timer (GsdPowerManager *manager);
+static void      sync_lid_inhibitor (GsdPowerManager *manager);
+static void      main_battery_or_ups_low_changed (GsdPowerManager *manager, gboolean is_low);
+static gboolean  idle_is_session_inhibited (GsdPowerManager *manager, guint mask, gboolean *is_inhibited);
+static void      idle_triggered_idle_cb (GnomeIdleMonitor *monitor, guint watch_id, gpointer user_data);
+static void      idle_became_active_cb (GnomeIdleMonitor *monitor, guint watch_id, gpointer user_data);
+static void      iio_proxy_changed (GsdPowerManager *manager);
+static void      iio_proxy_changed_cb (GDBusProxy *proxy, GVariant *changed_properties, GStrv invalidated_properties, gpointer user_data);
+
+G_DEFINE_TYPE (GsdPowerManager, gsd_power_manager, G_TYPE_OBJECT)
+
+static gpointer manager_object = NULL;
+
+GQuark
+gsd_power_manager_error_quark (void)
+{
+        static GQuark quark = 0;
+        if (!quark)
+                quark = g_quark_from_static_string ("gsd_power_manager_error");
+        return quark;
+}
+
+static void
+notify_close_if_showing (NotifyNotification **notification)
+{
+        if (*notification == NULL)
+                return;
+        notify_notification_close (*notification, NULL);
+        g_clear_object (notification);
+}
+
+static void
+engine_device_add (GsdPowerManager *manager, UpDevice *device)
+{
+        UpDeviceKind kind;
+
+        /* Batteries and UPSes are already handled through
+         * the composite battery */
+        g_object_get (device, "kind", &kind, NULL);
+        if (kind == UP_DEVICE_KIND_BATTERY ||
+            kind == UP_DEVICE_KIND_UPS ||
+            kind == UP_DEVICE_KIND_LINE_POWER)
+                return;
+        g_ptr_array_add (manager->devices_array, g_object_ref (device));
+
+        g_signal_connect (device, "notify::warning-level",
+                          G_CALLBACK (engine_device_warning_changed_cb), manager);
+
+        engine_device_warning_changed_cb (device, NULL, manager);
+}
+
+static gboolean
+engine_coldplug (GsdPowerManager *manager)
+{
+        guint i;
+        GPtrArray *array = NULL;
+        UpDevice *device;
+
+        /* add to database */
+        array = up_client_get_devices2 (manager->up_client);
+
+        for (i = 0 ; array != NULL && i < array->len ; i++) {
+                device = g_ptr_array_index (array, i);
+                engine_device_add (manager, device);
+        }
+
+        g_clear_pointer (&array, g_ptr_array_unref);
+
+        /* never repeat */
+        return FALSE;
+}
+
+static void
+engine_device_added_cb (UpClient *client, UpDevice *device, GsdPowerManager *manager)
+{
+        engine_device_add (manager, device);
+}
+
+static void
+engine_device_removed_cb (UpClient *client, const char *object_path, GsdPowerManager *manager)
+{
+        guint i;
+
+        for (i = 0; i < manager->devices_array->len; i++) {
+                UpDevice *device = g_ptr_array_index (manager->devices_array, i);
+
+                if (g_strcmp0 (object_path, up_device_get_object_path (device)) == 0) {
+                        g_ptr_array_remove_index (manager->devices_array, i);
+                        break;
+                }
+        }
+}
+
+static void
+on_notification_closed (NotifyNotification *notification, gpointer data)
+{
+    g_object_unref (notification);
+}
+
+/* See PrivacyScope in messageTray.js in gnome-shell. A notification with
+ * ‘system’ scope has its detailed description shown in the lock screen. ‘user’
+ * scope notifications don’t (because they could contain private information). */
+typedef enum
+{
+        NOTIFICATION_PRIVACY_USER,
+        NOTIFICATION_PRIVACY_SYSTEM,
+} NotificationPrivacyScope;
+
+static const gchar *
+notification_privacy_scope_to_string (NotificationPrivacyScope scope)
+{
+        switch (scope) {
+        case NOTIFICATION_PRIVACY_USER:
+                return "user";
+        case NOTIFICATION_PRIVACY_SYSTEM:
+                return "system";
+        default:
+                g_assert_not_reached ();
+        }
+}
+
+static void
+create_notification (const char *summary,
+                     const char *body,
+                     const char *icon_name,
+                     NotificationPrivacyScope privacy_scope,
+                     NotifyNotification **weak_pointer_location)
+{
+        NotifyNotification *notification;
+
+        notification = notify_notification_new (summary, body, icon_name);
+        /* TRANSLATORS: this is the notification application name */
+        notify_notification_set_app_name (notification, _("Power"));
+        notify_notification_set_hint_string (notification, "desktop-entry", "gnome-power-panel");
+        notify_notification_set_hint_string (notification, "x-gnome-privacy-scope",
+                                             notification_privacy_scope_to_string (privacy_scope));
+        notify_notification_set_urgency (notification,
+                                         NOTIFY_URGENCY_CRITICAL);
+        *weak_pointer_location = notification;
+        g_object_add_weak_pointer (G_OBJECT (notification),
+                                   (gpointer *) weak_pointer_location);
+        g_signal_connect (notification, "closed",
+                          G_CALLBACK (on_notification_closed), NULL);
+}
+
+static void
+engine_ups_discharging (GsdPowerManager *manager, UpDevice *device)
+{
+        const gchar *title;
+        gchar *remaining_text = NULL;
+        gdouble percentage;
+        char *icon_name;
+        gint64 time_to_empty;
+        GString *message;
+        UpDeviceKind kind;
+
+        /* get device properties */
+        g_object_get (device,
+                      "kind", &kind,
+                      "percentage", &percentage,
+                      "time-to-empty", &time_to_empty,
+                      "icon-name", &icon_name,
+                      NULL);
+
+        if (kind != UP_DEVICE_KIND_UPS)
+                return;
+
+        /* only show text if there is a valid time */
+        if (time_to_empty > 0)
+                remaining_text = gpm_get_timestring (time_to_empty);
+
+        /* TRANSLATORS: UPS is now discharging */
+        title = _("UPS Discharging");
+
+        message = g_string_new ("");
+        if (remaining_text != NULL) {
+                /* TRANSLATORS: tell the user how much time they have got */
+                g_string_append_printf (message, _("%s of UPS backup power remaining"),
+                                        remaining_text);
+        } else {
+                g_string_append (message, _("Unknown amount of UPS backup power remaining"));
+        }
+        g_string_append_printf (message, " (%.0f%%)", percentage);
+
+        /* close any existing notification of this class */
+        notify_close_if_showing (&manager->notification_ups_discharging);
+
+        /* create a new notification */
+        create_notification (title, message->str,
+                             icon_name, NOTIFICATION_PRIVACY_SYSTEM,
+                             &manager->notification_ups_discharging);
+        notify_notification_set_timeout (manager->notification_ups_discharging,
+                                         GSD_POWER_MANAGER_NOTIFY_TIMEOUT_LONG);
+        notify_notification_set_hint (manager->notification_ups_discharging,
+                                      "transient", g_variant_new_boolean (TRUE));
+
+        notify_notification_show (manager->notification_ups_discharging, NULL);
+
+        g_string_free (message, TRUE);
+        g_free (icon_name);
+        g_free (remaining_text);
+}
+
+static GsdPowerActionType
+manager_critical_action_get (GsdPowerManager *manager)
+{
+        GsdPowerActionType policy;
+        char *action;
+
+        action = up_client_get_critical_action (manager->up_client);
+        /* We don't make the difference between HybridSleep and Hibernate */
+        if (g_strcmp0 (action, "PowerOff") == 0)
+                policy = GSD_POWER_ACTION_SHUTDOWN;
+        else
+                policy = GSD_POWER_ACTION_HIBERNATE;
+        g_free (action);
+        return policy;
+}
+
+static gboolean
+manager_critical_action_stop_sound_cb (GsdPowerManager *manager)
+{
+        /* stop playing the alert as it's too late to do anything now */
+        play_loop_stop (&manager->critical_alert_timeout_id);
+
+        return FALSE;
+}
+
+static gboolean
+engine_device_debounce_warn (GsdPowerManager *manager,
+                             UpDeviceKind kind,
+                             UpDeviceLevel warning,
+                             const char *serial)
+{
+        gpointer last_warning_ptr;
+        UpDeviceLevel last_warning;
+        gboolean ret = TRUE;
+
+        if (!serial)
+                return TRUE;
+
+        if (kind == UP_DEVICE_KIND_BATTERY ||
+            kind == UP_DEVICE_KIND_UPS)
+                return TRUE;
+
+        if (g_hash_table_lookup_extended (manager->devices_notified_ht, serial,
+                                          NULL, &last_warning_ptr)) {
+                last_warning = GPOINTER_TO_INT (last_warning_ptr);
+
+                if (last_warning >= warning)
+                        ret = FALSE;
+        }
+
+        if (warning != UP_DEVICE_LEVEL_UNKNOWN && warning != UP_DEVICE_LEVEL_NONE)
+                g_hash_table_insert (manager->devices_notified_ht,
+                                     g_strdup (serial),
+                                     GINT_TO_POINTER (warning));
+
+        return ret;
+}
+
+static const struct {
+        UpDeviceKind kind;
+        const char *title;
+        const char *low_body_remain;
+        const char *low_body;
+        const char *low_body_unk;
+        const char *crit_body;
+        const char *crit_body_unk;
+} peripheral_battery_notifications[] = {
+        /* Intentionally skipped types (too uncommon, and name too imprecise):
+         * UP_DEVICE_KIND_MODEM
+         * UP_DEVICE_KIND_NETWORK
+         * UP_DEVICE_KIND_VIDEO
+         * UP_DEVICE_KIND_WEARABLE
+         * UP_DEVICE_KIND_TOY
+         */
+        {
+                .kind = UP_DEVICE_KIND_MOUSE,
+                /* TRANSLATORS: notification title, a wireless mouse is low or very low on power */
+                .title         = N_("Mouse battery low"),
+
+                /* TRANSLATORS: notification body, a wireless mouse is low on power */
+                .low_body      = N_("Wireless mouse is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Wireless mouse is low on power"),
+                /* TRANSLATORS: notification body, a wireless mouse is very low on power */
+                .crit_body     = N_("Wireless mouse is very low on power (%.0f%%). "
+                                    "This device will soon stop functioning if not charged."),
+                .crit_body_unk = N_("Wireless mouse is very low on power. "
+                                    "This device will soon stop functioning if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_KEYBOARD,
+                /* TRANSLATORS: notification title, a wireless keyboard is low or very low on power */
+                .title         = N_("Keyboard battery low"),
+
+                /* TRANSLATORS: notification body, a wireless keyboard is low on power */
+                .low_body      = N_("Wireless keyboard is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Wireless keyboard is low on power"),
+                /* TRANSLATORS: notification body, a wireless keyboard is very low on power */
+                .crit_body     = N_("Wireless keyboard is very low on power (%.0f%%). "
+                                    "This device will soon stop functioning if not charged."),
+                .crit_body_unk = N_("Wireless keyboard is very low on power. "
+                                    "This device will soon stop functioning if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_PDA,
+                /* TRANSLATORS: notification title, a PDA (Personal Digital Assistance device) is low or very on power */
+                .title         = N_("PDA battery low"),
+
+                /* TRANSLATORS: notification body, a PDA (Personal Digital Assistance device) is low on power */
+                .low_body      = N_("PDA is low on power (%.0f%%)"),
+                .low_body_unk  = N_("PDA is low on power"),
+                /* TRANSLATORS: notification body, a PDA (Personal Digital Assistance device) is very low on power */
+                .crit_body     = N_("PDA is very low on power (%.0f%%). "
+                                    "This device will soon stop functioning if not charged."),
+                .crit_body_unk = N_("PDA is very low on power. "
+                                    "This device will soon stop functioning if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_PHONE,
+                /* TRANSLATORS: notification title, a cell phone (mobile phone) is low or very low on power */
+                .title         = N_("Cell phone battery low"),
+
+                /* TRANSLATORS: notification body, a cell phone (mobile phone) is low on power */
+                .low_body      = N_("Cell phone is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Cell phone is low on power"),
+                /* TRANSLATORS: notification body, a cell phone (mobile phone) is very low on power */
+                .crit_body     = N_("Cell phone is very low on power (%.0f%%). "
+                                    "This device will soon stop functioning if not charged."),
+                .crit_body_unk = N_("Cell phone is very low on power. "
+                                    "This device will soon stop functioning if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_MEDIA_PLAYER,
+                /* TRANSLATORS: notification title, a media player (e.g. mp3 player) is low or very low on power */
+                .title         = N_("Media player battery low"),
+
+                /* TRANSLATORS: notification body, a media player (e.g. mp3 player) is low on power */
+                .low_body      = N_("Media player is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Media player is low on power"),
+                /* TRANSLATORS: notification body, a media player (e.g. mp3 player) is very low on power */
+                .crit_body     = N_("Media player is very low on power (%.0f%%). "
+                                    "This device will soon stop functioning if not charged."),
+                .crit_body_unk = N_("Media player is very low on power. "
+                                    "This device will soon stop functioning if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_TABLET,
+                /* TRANSLATORS: notification title, a graphics tablet (e.g. wacom) is low or very low on power */
+                .title         = N_("Tablet battery low"),
+
+                /* TRANSLATORS: notification body, a graphics tablet (e.g. wacom) is low on power */
+                .low_body      = N_("Tablet is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Tablet is low on power"),
+                /* TRANSLATORS: notification body, a graphics tablet (e.g. wacom) is very low on power */
+                .crit_body     = N_("Tablet is very low on power (%.0f%%). "
+                                    "This device will soon stop functioning if not charged."),
+                .crit_body_unk = N_("Tablet is very low on power. "
+                                    "This device will soon stop functioning if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_COMPUTER,
+                /* TRANSLATORS: notification title, an attached computer (e.g. ipad) is low or very low on power */
+                .title         = N_("Attached computer battery low"),
+
+                /* TRANSLATORS: notification body, an attached computer (e.g. ipad) is low on power */
+                .low_body      = N_("Attached computer is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Attached computer is low on power"),
+                /* TRANSLATORS: notification body, an attached computer (e.g. ipad) is very low on power */
+                .crit_body     = N_("Attached computer is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Attached computer is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_GAMING_INPUT,
+                /* TRANSLATORS: notification title, a game controller (e.g. joystick or joypad) is low or very low on power */
+                .title         = N_("Game controller battery low"),
+
+                /* TRANSLATORS: notification body, a game controller (e.g. joystick or joypad) is low on power */
+                .low_body      = N_("Game controller is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Game controller is low on power"),
+                /* TRANSLATORS: notification body, an attached game controller (e.g. joystick or joypad) is very low on power */
+                .crit_body     = N_("Game controller is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Game controller is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_PEN,
+                /* TRANSLATORS: notification title, a pen is low or very low on power */
+                .title         = N_("Pen battery low"),
+
+                /* TRANSLATORS: notification body, a pen is low on power */
+                .low_body      = N_("Pen is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Pen is low on power"),
+                /* TRANSLATORS: notification body, a pen is very low on power */
+                .crit_body     = N_("Pen is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Pen is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_TOUCHPAD,
+                /* TRANSLATORS: notification title, an external touchpad is low or very low on power */
+                .title         = N_("Touchpad battery low"),
+
+                /* TRANSLATORS: notification body, an external touchpad is low on power */
+                .low_body      = N_("Touchpad is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Touchpad is low on power"),
+                /* TRANSLATORS: notification body, an external touchpad is very low on power */
+                .crit_body     = N_("Touchpad is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Touchpad is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_HEADSET,
+                /* TRANSLATORS: notification title, a headset (headphones + microphone) is low or very low on power */
+                .title         = N_("Headset battery low"),
+
+                /* TRANSLATORS: notification body, a headset (headphones + microphone) is low on power */
+                .low_body      = N_("Headset is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Headset is low on power"),
+                /* TRANSLATORS: notification body, a headset (headphones + microphone) is very low on power */
+                .crit_body     = N_("Headset is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Headset is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_SPEAKERS,
+                /* TRANSLATORS: notification title, speaker is low or very low on power */
+                .title         = N_("Speaker battery low"),
+
+                /* TRANSLATORS: notification body, a speaker is low on power */
+                .low_body      = N_("Speaker is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Speaker is low on power"),
+                /* TRANSLATORS: notification body, a speaker is very low on power */
+                .crit_body     = N_("Speaker is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Speaker is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_HEADPHONES,
+                /* TRANSLATORS: notification title, headphones (no microphone) are low or very low on power */
+                .title         = N_("Headphones battery low"),
+
+                /* TRANSLATORS: notification body, headphones (no microphone) are low on power */
+                .low_body      = N_("Headphones are low on power (%.0f%%)"),
+                .low_body_unk  = N_("Headphones are low on power"),
+                /* TRANSLATORS: notification body, headphones (no microphone) are very low on power */
+                .crit_body     = N_("Headphones are very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Headphones are very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_OTHER_AUDIO,
+                /* TRANSLATORS: notification title, an audio device is low or very low on power */
+                .title         = N_("Audio device battery low"),
+
+                /* TRANSLATORS: notification body, an audio device is low on power */
+                .low_body      = N_("Audio device is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Audio device is low on power"),
+                /* TRANSLATORS: notification body, an audio device is very low on power */
+                .crit_body     = N_("Audio device is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Audio device is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_REMOTE_CONTROL,
+                /* TRANSLATORS: notification title, a remote control is low or very low on power */
+                .title         = N_("Remote battery low"),
+
+                /* TRANSLATORS: notification body, an remote control is low on power */
+                .low_body      = N_("Remote is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Remote is low on power"),
+                /* TRANSLATORS: notification body, a remote control is very low on power */
+                .crit_body     = N_("Remote is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Remote is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_PRINTER,
+                /* TRANSLATORS: notification title, a printer is low or very low on power */
+                .title         = N_("Printer battery low"),
+
+                /* TRANSLATORS: notification body, a printer is low on power */
+                .low_body      = N_("Printer is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Printer is low on power"),
+                /* TRANSLATORS: notification body, a printer is very low on power */
+                .crit_body     = N_("Printer is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Printer is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_SCANNER,
+                /* TRANSLATORS: notification title, a scanner is low or very low on power */
+                .title         = N_("Scanner battery low"),
+
+                /* TRANSLATORS: notification body, a scanner is low on power */
+                .low_body      = N_("Scanner is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Scanner is low on power"),
+                /* TRANSLATORS: notification body, a scanner is very low on power */
+                .crit_body     = N_("Scanner is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Scanner is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_CAMERA,
+                /* TRANSLATORS: notification title, a camera is low or very low on power */
+                .title         = N_("Camera battery low"),
+
+                /* TRANSLATORS: notification body, a camera is low on power */
+                .low_body      = N_("Camera is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Camera is low on power"),
+                /* TRANSLATORS: notification body, a camera is very low on power */
+                .crit_body     = N_("Camera is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Camera is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                .kind = UP_DEVICE_KIND_BLUETOOTH_GENERIC,
+                /* TRANSLATORS: notification title, a Bluetooth device is low or very low on power */
+                .title         = N_("Bluetooth device battery low"),
+
+                /* TRANSLATORS: notification body, a Bluetooth device is low on power */
+                .low_body      = N_("Bluetooth device is low on power (%.0f%%)"),
+                .low_body_unk  = N_("Bluetooth device is low on power"),
+                /* TRANSLATORS: notification body, a Bluetooth device is very low on power */
+                .crit_body     = N_("Bluetooth device is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("Bluetooth device is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }, {
+                /* Last entry is the fallback (kind is actually unused)! */
+                .kind = UP_DEVICE_KIND_UNKNOWN,
+                /* TRANSLATORS: notification title, a connected (wireless) device or peripheral of unhandled type is low or very on power */
+                .title         = N_("Connected device battery is low"),
+
+                /* TRANSLATORS: notification body, a connected (wireless) device or peripheral of unhandled type is low on power */
+                .low_body      = N_("A connected device is low on power (%.0f%%)"),
+                .low_body_unk  = N_("A connected device is low on power"),
+                /* TRANSLATORS: notification body, a connected (wireless) device or peripheral of unhandled type is very low on power */
+                .crit_body     = N_("A connected device is very low on power (%.0f%%). "
+                                    "The device will soon shutdown if not charged."),
+                .crit_body_unk = N_("A connected device is very low on power. "
+                                    "The device will soon shutdown if not charged."),
+        }
+};
+
+static void
+engine_charge_low (GsdPowerManager *manager, UpDevice *device)
+{
+        const gchar *title = NULL;
+        gchar *message = NULL;
+        gchar *tmp;
+        gchar *remaining_text;
+        gdouble percentage;
+        guint battery_level;
+        char *icon_name;
+        gint64 time_to_empty;
+        UpDeviceKind kind;
+
+        /* get device properties */
+        g_object_get (device,
+                      "kind", &kind,
+                      "percentage", &percentage,
+                      "time-to-empty", &time_to_empty,
+                      "battery-level", &battery_level,
+                      "icon-name", &icon_name,
+                      NULL);
+
+        if (battery_level == UP_DEVICE_LEVEL_UNKNOWN)
+                battery_level = UP_DEVICE_LEVEL_NONE;
+
+        if (kind == UP_DEVICE_KIND_BATTERY) {
+                /* TRANSLATORS: notification title, the battery of this laptop/tablet/phone is running low, shows time remaining */
+                title = _("Battery low");
+                tmp = gpm_get_timestring (time_to_empty);
+                remaining_text = g_strconcat ("<b>", tmp, "</b>", NULL);
+                g_free (tmp);
+
+                /* TRANSLATORS: notification body, the battery of this laptop/tablet/phone is running low, shows time remaining */
+                message = g_strdup_printf (_("Approximately %s remaining (%.0f%%)"), remaining_text, percentage);
+                g_free (remaining_text);
+
+        } else if (kind == UP_DEVICE_KIND_UPS) {
+                /* TRANSLATORS: notification title, an Uninterruptible Power Supply (UPS) is running low, shows time remaining */
+                title = _("UPS low");
+                tmp = gpm_get_timestring (time_to_empty);
+                remaining_text = g_strconcat ("<b>", tmp, "</b>", NULL);
+                g_free (tmp);
+
+                /* TRANSLATORS: notification body, an Uninterruptible Power Supply (UPS) is running low, shows time remaining */
+                message = g_strdup_printf (_("Approximately %s of remaining UPS backup power (%.0f%%)"),
+                                           remaining_text, percentage);
+                g_free (remaining_text);
+        } else {
+                guint i;
+
+                for (i = 0; i < G_N_ELEMENTS (peripheral_battery_notifications); i++) {
+                        if (peripheral_battery_notifications[i].kind == kind)
+                                break;
+                }
+                /* Use the last element if nothing was found*/
+                i = MIN (i, G_N_ELEMENTS (peripheral_battery_notifications) - 1);
+
+                title = gettext (peripheral_battery_notifications[i].title);
+
+                if (battery_level == UP_DEVICE_LEVEL_NONE)
+                        message = g_strdup_printf (gettext (peripheral_battery_notifications[i].low_body), percentage);
+                else
+                        message = g_strdup (gettext (peripheral_battery_notifications[i].low_body_unk));
+        }
+
+        /* close any existing notification of this class */
+        notify_close_if_showing (&manager->notification_low);
+
+        /* create a new notification */
+        create_notification (title, message,
+                             icon_name, NOTIFICATION_PRIVACY_SYSTEM,
+                             &manager->notification_low);
+        notify_notification_set_timeout (manager->notification_low,
+                                         GSD_POWER_MANAGER_NOTIFY_TIMEOUT_LONG);
+        notify_notification_set_hint (manager->notification_low,
+                                      "transient", g_variant_new_boolean (TRUE));
+
+        notify_notification_show (manager->notification_low, NULL);
+
+        /* play the sound, using sounds from the naming spec */
+        ca_context_play (ca_gtk_context_get (), 0,
+                         CA_PROP_EVENT_ID, "battery-low",
+                         /* TRANSLATORS: this is the sound description */
+                         CA_PROP_EVENT_DESCRIPTION, _("Battery is low"), NULL);
+
+        g_free (icon_name);
+        g_free (message);
+}
+
+static void
+engine_charge_critical (GsdPowerManager *manager, UpDevice *device)
+{
+        const gchar *title = NULL;
+        gchar *message = NULL;
+        gdouble percentage;
+        guint battery_level;
+        char *icon_name;
+        gint64 time_to_empty;
+        GsdPowerActionType policy;
+        UpDeviceKind kind;
+
+        /* get device properties */
+        g_object_get (device,
+                      "kind", &kind,
+                      "percentage", &percentage,
+                      "battery-level", &battery_level,
+                      "time-to-empty", &time_to_empty,
+                      "icon-name", &icon_name,
+                      NULL);
+
+        if (battery_level == UP_DEVICE_LEVEL_UNKNOWN)
+                battery_level = UP_DEVICE_LEVEL_NONE;
+
+        if (kind == UP_DEVICE_KIND_BATTERY) {
+                /* TRANSLATORS: notification title, the battery of this laptop/tablet/phone is critically low, warning about action happening soon */
+                title = _("Battery critically low");
+
+                /* we have to do different warnings depending on the policy */
+                policy = manager_critical_action_get (manager);
+
+                if (policy == GSD_POWER_ACTION_HIBERNATE) {
+                        /* TRANSLATORS: notification body, the battery of this laptop/tablet/phone is critically low, warning about action happening soon */
+                        message = g_strdup_printf (_("Hibernating soon unless plugged in."));
+                } else if (policy == GSD_POWER_ACTION_SHUTDOWN) {
+                        message = g_strdup_printf (_("Shutting down soon unless plugged in."));
+                }
+
+        } else if (kind == UP_DEVICE_KIND_UPS) {
+                gchar *remaining_text;
+                gchar *tmp;
+
+                /* TRANSLATORS: notification title, an Uninterruptible Power Supply (UPS) is running low, warning about action happening soon */
+                title = _("UPS critically low");
+                tmp = gpm_get_timestring (time_to_empty);
+                remaining_text = g_strconcat ("<b>", tmp, "</b>", NULL);
+                g_free (tmp);
+
+                /* TRANSLATORS: notification body, an Uninterruptible Power Supply (UPS) is running low, warning about action happening soon */
+                message = g_strdup_printf (_("Approximately %s of remaining UPS power (%.0f%%). "
+                                             "Restore AC power to your computer to avoid losing data."),
+                                           remaining_text, percentage);
+                g_free (remaining_text);
+        } else {
+                guint i;
+
+                for (i = 0; i < G_N_ELEMENTS (peripheral_battery_notifications); i++) {
+                        if (peripheral_battery_notifications[i].kind == kind)
+                                break;
+                }
+                /* Use the last element if nothing was found*/
+                i = MIN (i, G_N_ELEMENTS (peripheral_battery_notifications) - 1);
+
+                title = gettext (peripheral_battery_notifications[i].title);
+
+                if (battery_level == UP_DEVICE_LEVEL_NONE)
+                        message = g_strdup_printf (gettext (peripheral_battery_notifications[i].crit_body), percentage);
+                else
+                        message = g_strdup (gettext (peripheral_battery_notifications[i].crit_body_unk));
+        }
+
+        /* close any existing notification of this class */
+        notify_close_if_showing (&manager->notification_low);
+
+        /* create a new notification */
+        create_notification (title, message,
+                             icon_name, NOTIFICATION_PRIVACY_SYSTEM,
+                             &manager->notification_low);
+        notify_notification_set_timeout (manager->notification_low,
+                                         NOTIFY_EXPIRES_NEVER);
+
+        notify_notification_show (manager->notification_low, NULL);
+
+        switch (kind) {
+
+        case UP_DEVICE_KIND_BATTERY:
+        case UP_DEVICE_KIND_UPS:
+                g_debug ("critical charge level reached, starting sound loop");
+                play_loop_start (&manager->critical_alert_timeout_id);
+                break;
+
+        default:
+                /* play the sound, using sounds from the naming spec */
+                ca_context_play (ca_gtk_context_get (), 0,
+                                 CA_PROP_EVENT_ID, "battery-caution",
+                                 /* TRANSLATORS: this is the sound description */
+                                 CA_PROP_EVENT_DESCRIPTION, _("Battery is critically low"), NULL);
+                break;
+        }
+
+        g_free (icon_name);
+        g_free (message);
+}
+
+static void
+engine_charge_action (GsdPowerManager *manager, UpDevice *device)
+{
+        const gchar *title = NULL;
+        gchar *message = NULL;
+        char *icon_name;
+        GsdPowerActionType policy;
+        guint timer_id;
+        UpDeviceKind kind;
+
+        /* get device properties */
+        g_object_get (device,
+                      "kind", &kind,
+                      "icon-name", &icon_name,
+                      NULL);
+
+        if (kind == UP_DEVICE_KIND_BATTERY) {
+                /* TRANSLATORS: notification title, the battery of this laptop/tablet/phone is critically low, warning about action happening now */
+                title = _("Battery critically low");
+
+                /* we have to do different warnings depending on the policy */
+                policy = manager_critical_action_get (manager);
+
+                if (policy == GSD_POWER_ACTION_HIBERNATE) {
+                        /* TRANSLATORS: notification body, the battery of this laptop/tablet/phone is critically low, warning about action happening now */
+                        message = g_strdup (_("The battery is below the critical level and "
+                                              "this computer is about to hibernate."));
+
+                } else if (policy == GSD_POWER_ACTION_SHUTDOWN) {
+                        message = g_strdup (_("The battery is below the critical level and "
+                                              "this computer is about to shutdown."));
+                }
+
+                /* wait 20 seconds for user-panic */
+                timer_id = g_timeout_add_seconds (GSD_STOP_SOUND_DELAY,
+                                                  (GSourceFunc) manager_critical_action_stop_sound_cb,
+                                                  manager);
+                g_source_set_name_by_id (timer_id, "[GsdPowerManager] battery critical-action");
+
+        } else if (kind == UP_DEVICE_KIND_UPS) {
+                /* TRANSLATORS: notification title, an Uninterruptible Power Supply (UPS) is running low, warning about action happening now */
+                title = _("UPS critically low");
+
+                /* we have to do different warnings depending on the policy */
+                policy = manager_critical_action_get (manager);
+
+                if (policy == GSD_POWER_ACTION_HIBERNATE) {
+                        /* TRANSLATORS: notification body, an Uninterruptible Power Supply (UPS) is running low, warning about action happening now */
+                        message = g_strdup (_("UPS is below the critical level and "
+                                              "this computer is about to hibernate."));
+
+                } else if (policy == GSD_POWER_ACTION_SHUTDOWN) {
+                        message = g_strdup (_("UPS is below the critical level and "
+                                              "this computer is about to shutdown."));
+                }
+
+                /* wait 20 seconds for user-panic */
+                timer_id = g_timeout_add_seconds (GSD_STOP_SOUND_DELAY,
+                                                  (GSourceFunc) manager_critical_action_stop_sound_cb,
+                                                  manager);
+                g_source_set_name_by_id (timer_id, "[GsdPowerManager] ups critical-action");
+        }
+
+        /* not all types have actions */
+        if (title == NULL)
+                return;
+
+        /* close any existing notification of this class */
+        notify_close_if_showing (&manager->notification_low);
+
+        /* create a new notification */
+        create_notification (title, message,
+                             icon_name, NOTIFICATION_PRIVACY_SYSTEM,
+                             &manager->notification_low);
+        notify_notification_set_timeout (manager->notification_low,
+                                         NOTIFY_EXPIRES_NEVER);
+
+        /* try to show */
+        notify_notification_show (manager->notification_low, NULL);
+
+        /* play the sound, using sounds from the naming spec */
+        ca_context_play (ca_gtk_context_get (), 0,
+                         CA_PROP_EVENT_ID, "battery-caution",
+                         /* TRANSLATORS: this is the sound description */
+                         CA_PROP_EVENT_DESCRIPTION, _("Battery is critically low"), NULL);
+
+        g_free (icon_name);
+        g_free (message);
+}
+
+static void
+engine_device_warning_changed_cb (UpDevice *device, GParamSpec *pspec, GsdPowerManager *manager)
+{
+        g_autofree char *serial = NULL;
+        UpDeviceLevel warning;
+        UpDeviceKind kind;
+
+        g_object_get (device,
+                      "serial", &serial,
+                      "warning-level", &warning,
+                      "kind", &kind,
+                      NULL);
+
+        if (!engine_device_debounce_warn (manager, kind, warning, serial))
+                return;
+
+        if (warning == UP_DEVICE_LEVEL_DISCHARGING) {
+                g_debug ("** EMIT: discharging");
+                engine_ups_discharging (manager, device);
+        } else if (warning == UP_DEVICE_LEVEL_LOW) {
+                g_debug ("** EMIT: charge-low");
+                engine_charge_low (manager, device);
+        } else if (warning == UP_DEVICE_LEVEL_CRITICAL) {
+                g_debug ("** EMIT: charge-critical");
+                engine_charge_critical (manager, device);
+        } else if (warning == UP_DEVICE_LEVEL_ACTION) {
+                g_debug ("** EMIT: charge-action");
+                engine_charge_action (manager, device);
+        } else if (warning == UP_DEVICE_LEVEL_NONE) {
+                /* FIXME: this only handles one notification
+                 * for the whole system, instead of one per device */
+                g_debug ("fully charged or charging, hiding notifications if any");
+                play_loop_stop (&manager->critical_alert_timeout_id);
+                if (kind != UP_DEVICE_KIND_UPS)
+                        notify_close_if_showing (&manager->notification_low);
+                else
+                        notify_close_if_showing (&manager->notification_ups_discharging);
+        }
+
+        if (kind == UP_DEVICE_KIND_BATTERY ||
+            kind == UP_DEVICE_KIND_UPS)
+                main_battery_or_ups_low_changed (manager, (warning != UP_DEVICE_LEVEL_NONE));
+}
+
+static void
+gnome_session_shutdown_cb (GObject *source_object,
+                           GAsyncResult *res,
+                           gpointer user_data)
+{
+        GVariant *result;
+        GError *error = NULL;
+
+        result = g_dbus_proxy_call_finish (G_DBUS_PROXY (source_object),
+                                           res,
+                                           &error);
+        if (result == NULL) {
+                g_warning ("couldn't shutdown using gnome-session: %s",
+                           error->message);
+                g_error_free (error);
+        } else {
+                g_variant_unref (result);
+        }
+}
+
+static void
+gnome_session_shutdown (GsdPowerManager *manager)
+{
+        g_dbus_proxy_call (G_DBUS_PROXY (manager->session),
+                           "Shutdown",
+                           NULL,
+                           G_DBUS_CALL_FLAGS_NONE,
+                           -1, NULL,
+                           gnome_session_shutdown_cb, NULL);
+}
+
+static void
+gnome_session_logout_cb (GObject *source_object,
+                         GAsyncResult *res,
+                         gpointer user_data)
+{
+        GVariant *result;
+        GError *error = NULL;
+
+        result = g_dbus_proxy_call_finish (G_DBUS_PROXY (source_object),
+                                           res,
+                                           &error);
+        if (result == NULL) {
+                g_warning ("couldn't log out using gnome-session: %s",
+                           error->message);
+                g_error_free (error);
+        } else {
+                g_variant_unref (result);
+        }
+}
+
+static void
+gnome_session_logout (GsdPowerManager *manager,
+                      guint            logout_mode)
+{
+        if (g_getenv ("RUNNING_UNDER_GDM")) {
+                g_warning ("Prevented logout from GDM session! This indicates an issue in gsd-power.");
+                return;
+        }
+
+        g_dbus_proxy_call (G_DBUS_PROXY (manager->session),
+                           "Logout",
+                           g_variant_new ("(u)", logout_mode),
+                           G_DBUS_CALL_FLAGS_NONE,
+                           -1, NULL,
+                           gnome_session_logout_cb, NULL);
+}
+
+static void
+dbus_call_log_error (GObject *source_object,
+                     GAsyncResult *res,
+                     gpointer user_data)
+{
+        g_autoptr(GVariant) result = NULL;
+        g_autoptr(GError) error = NULL;
+        const gchar *msg = user_data;
+
+        result = g_dbus_proxy_call_finish (G_DBUS_PROXY (source_object),
+                                           res,
+                                           &error);
+        if (result == NULL)
+                g_warning ("%s: %s", msg, error->message);
+}
+
+static void
+action_poweroff (GsdPowerManager *manager)
+{
+        if (manager->logind_proxy == NULL) {
+                g_warning ("no systemd support");
+                return;
+        }
+        g_dbus_proxy_call (manager->logind_proxy,
+                           "PowerOff",
+                           g_variant_new ("(b)", FALSE),
+                           G_DBUS_CALL_FLAGS_NONE,
+                           G_MAXINT,
+                           NULL,
+                           dbus_call_log_error,
+                           "Error calling PowerOff");
+}
+
+static void
+action_suspend (GsdPowerManager *manager)
+{
+        if (manager->logind_proxy == NULL) {
+                g_warning ("no systemd support");
+                return;
+        }
+        g_dbus_proxy_call (manager->logind_proxy,
+                           "Suspend",
+                           g_variant_new ("(b)", FALSE),
+                           G_DBUS_CALL_FLAGS_NONE,
+                           G_MAXINT,
+                           NULL,
+                           dbus_call_log_error,
+                           "Error calling suspend action");
+}
+
+static void
+action_hibernate (GsdPowerManager *manager)
+{
+        if (manager->logind_proxy == NULL) {
+                g_warning ("no systemd support");
+                return;
+        }
+        g_dbus_proxy_call (manager->logind_proxy,
+                           "Hibernate",
+                           g_variant_new ("(b)", FALSE),
+                           G_DBUS_CALL_FLAGS_NONE,
+                           G_MAXINT,
+                           NULL,
+                           dbus_call_log_error,
+                           "Error calling Hibernate");
+}
+
+static void
+iio_proxy_claim_light (GsdPowerManager *manager, gboolean active)
+{
+        GError *error = NULL;
+        if (manager->iio_proxy == NULL)
+                return;
+        if (!manager->backlight)
+                return;
+	if (active && !manager->session_is_active)
+		return;
+
+        /* FIXME:
+         * Remove when iio-sensor-proxy sends events only to clients instead
+         * of all listeners:
+         * https://github.com/hadess/iio-sensor-proxy/issues/210 */
+
+        /* disconnect, otherwise callback can be added multiple times */
+        g_signal_handlers_disconnect_by_func (manager->iio_proxy,
+                                              G_CALLBACK (iio_proxy_changed_cb),
+                                              manager);
+
+        if (active)
+                g_signal_connect (manager->iio_proxy, "g-properties-changed",
+                                  G_CALLBACK (iio_proxy_changed_cb), manager);
+
+        if (!g_dbus_proxy_call_sync (manager->iio_proxy,
+                                     active ? "ClaimLight" : "ReleaseLight",
+                                     NULL,
+                                     G_DBUS_CALL_FLAGS_NONE,
+                                     -1,
+                                     NULL,
+                                     &error)) {
+                g_warning ("Call to iio-proxy failed: %s", error->message);
+                g_error_free (error);
+        }
+
+        if (active)
+                iio_proxy_changed (manager);
+}
+
+static void
+backlight_enable (GsdPowerManager *manager)
+{
+        gboolean ret;
+        GError *error = NULL;
+
+        iio_proxy_claim_light (manager, TRUE);
+        ret = gnome_rr_screen_set_dpms_mode (manager->rr_screen,
+                                             GNOME_RR_DPMS_ON,
+                                             &error);
+        if (!ret) {
+                g_warning ("failed to turn the panel on: %s",
+                           error->message);
+                g_error_free (error);
+        }
+
+        g_debug ("TESTSUITE: Unblanked screen");
+}
+
+static void
+backlight_disable (GsdPowerManager *manager)
+{
+        gboolean ret;
+        GError *error = NULL;
+
+        iio_proxy_claim_light (manager, FALSE);
+        ret = gnome_rr_screen_set_dpms_mode (manager->rr_screen,
+                                             GNOME_RR_DPMS_OFF,
+                                             &error);
+        if (!ret) {
+                g_warning ("failed to turn the panel off: %s",
+                           error->message);
+                g_error_free (error);
+        }
+
+        g_debug ("TESTSUITE: Blanked screen");
+}
+
+static void
+do_power_action_type (GsdPowerManager *manager,
+                      GsdPowerActionType action_type)
+{
+        switch (action_type) {
+        case GSD_POWER_ACTION_SUSPEND:
+                action_suspend (manager);
+                break;
+        case GSD_POWER_ACTION_INTERACTIVE:
+                gnome_session_shutdown (manager);
+                break;
+        case GSD_POWER_ACTION_HIBERNATE:
+                action_hibernate (manager);
+                break;
+        case GSD_POWER_ACTION_SHUTDOWN:
+                /* this is only used on critically low battery where
+                 * hibernate is not available and is marginally better
+                 * than just powering down the computer mid-write */
+                action_poweroff (manager);
+                break;
+        case GSD_POWER_ACTION_BLANK:
+                backlight_disable (manager);
+                break;
+        case GSD_POWER_ACTION_NOTHING:
+                break;
+        case GSD_POWER_ACTION_LOGOUT:
+                gnome_session_logout (manager, GSM_MANAGER_LOGOUT_MODE_FORCE);
+                break;
+        }
+}
+
+static GsmInhibitorFlag
+get_idle_inhibitors_for_action (GsdPowerActionType action_type)
+{
+        switch (action_type) {
+        case GSD_POWER_ACTION_BLANK:
+        case GSD_POWER_ACTION_SHUTDOWN:
+        case GSD_POWER_ACTION_INTERACTIVE:
+                return GSM_INHIBITOR_FLAG_IDLE;
+        case GSD_POWER_ACTION_HIBERNATE:
+        case GSD_POWER_ACTION_SUSPEND:
+                return GSM_INHIBITOR_FLAG_SUSPEND; /* in addition to idle */
+        case GSD_POWER_ACTION_NOTHING:
+                return 0;
+        case GSD_POWER_ACTION_LOGOUT:
+                return GSM_INHIBITOR_FLAG_LOGOUT; /* in addition to idle */
+        }
+        return 0;
+}
+
+static gboolean
+is_action_inhibited (GsdPowerManager *manager, GsdPowerActionType action_type)
+{
+        GsmInhibitorFlag flag;
+        gboolean is_inhibited;
+
+        flag = get_idle_inhibitors_for_action (action_type);
+        if (!flag)
+                return FALSE;
+        idle_is_session_inhibited (manager,
+                                   flag,
+                                   &is_inhibited);
+        return is_inhibited;
+}
+
+static gboolean
+upower_kbd_set_brightness (GsdPowerManager *manager, guint value, GError **error)
+{
+        GVariant *retval;
+
+        /* same as before */
+        if (manager->kbd_brightness_now == value)
+                return TRUE;
+        if (manager->upower_kbd_proxy == NULL)
+                return TRUE;
+
+        /* update h/w value */
+        retval = g_dbus_proxy_call_sync (manager->upower_kbd_proxy,
+                                         "SetBrightness",
+                                         g_variant_new ("(i)", (gint) value),
+                                         G_DBUS_CALL_FLAGS_NONE,
+                                         -1,
+                                         manager->cancellable,
+                                         error);
+        if (retval == NULL)
+                return FALSE;
+
+        /* save new value */
+        manager->kbd_brightness_now = value;
+        g_variant_unref (retval);
+        return TRUE;
+}
+
+static int
+upower_kbd_toggle (GsdPowerManager *manager,
+                   GError **error)
+{
+        gboolean ret;
+        int value = -1;
+
+        if (manager->kbd_brightness_old >= 0) {
+                g_debug ("keyboard toggle off");
+                ret = upower_kbd_set_brightness (manager,
+                                                 manager->kbd_brightness_old,
+                                                 error);
+                if (ret) {
+                        /* succeeded, set to -1 since now no old value */
+                        manager->kbd_brightness_old = -1;
+                        value = 0;
+                }
+        } else {
+                g_debug ("keyboard toggle on");
+                /* save the current value to restore later when untoggling */
+                manager->kbd_brightness_old = manager->kbd_brightness_now;
+                ret = upower_kbd_set_brightness (manager, 0, error);
+                if (!ret) {
+                        /* failed, reset back to -1 */
+                        manager->kbd_brightness_old = -1;
+                } else {
+                        value = 0;
+                }
+        }
+
+        if (ret)
+                return value;
+        return -1;
+}
+
+static gboolean
+suspend_on_lid_close (GsdPowerManager *manager)
+{
+        return !external_monitor_is_connected (manager->rr_screen) || !manager->session_is_active;
+}
+
+static gboolean
+inhibit_lid_switch_timer_cb (GsdPowerManager *manager)
+{
+        stop_inhibit_lid_switch_timer (manager);
+
+        if (suspend_on_lid_close (manager)) {
+                g_debug ("no external monitors or session inactive for a while; uninhibiting lid close");
+                uninhibit_lid_switch (manager);
+        }
+
+        /* This is a one shot timer. */
+        return G_SOURCE_REMOVE;
+}
+
+/* Sets up a timer to be triggered some seconds after closing the laptop lid
+ * when the laptop is *not* suspended for some reason.  We'll check conditions
+ * again in the timeout handler to see if we can suspend then.
+ */
+static void
+setup_inhibit_lid_switch_timer (GsdPowerManager *manager)
+{
+        if (manager->inhibit_lid_switch_timer_id != 0) {
+                g_debug ("lid close safety timer already set up");
+                return;
+        }
+
+        g_debug ("setting up lid close safety timer");
+
+        manager->inhibit_lid_switch_timer_id = g_timeout_add_seconds (LID_CLOSE_SAFETY_TIMEOUT,
+                                                                            (GSourceFunc) inhibit_lid_switch_timer_cb,
+                                                                            manager);
+        g_source_set_name_by_id (manager->inhibit_lid_switch_timer_id, "[GsdPowerManager] lid close safety timer");
+}
+
+static void
+stop_inhibit_lid_switch_timer (GsdPowerManager *manager) {
+        if (manager->inhibit_lid_switch_timer_id != 0) {
+                g_debug ("stopping lid close safety timer");
+                g_source_remove (manager->inhibit_lid_switch_timer_id);
+                manager->inhibit_lid_switch_timer_id = 0;
+        }
+}
+
+static void
+restart_inhibit_lid_switch_timer (GsdPowerManager *manager)
+{
+        stop_inhibit_lid_switch_timer (manager);
+        g_debug ("restarting lid close safety timer");
+        setup_inhibit_lid_switch_timer (manager);
+}
+
+static void
+do_lid_open_action (GsdPowerManager *manager)
+{
+        /* play a sound, using sounds from the naming spec */
+        ca_context_play (ca_gtk_context_get (), 0,
+                         CA_PROP_EVENT_ID, "lid-open",
+                         /* TRANSLATORS: this is the sound description */
+                         CA_PROP_EVENT_DESCRIPTION, _("Lid has been opened"),
+                         NULL);
+}
+
+static void
+lock_screensaver (GsdPowerManager *manager)
+{
+        gboolean do_lock;
+
+        do_lock = g_settings_get_boolean (manager->settings_screensaver,
+                                          "lock-enabled");
+        if (!do_lock) {
+                g_dbus_proxy_call_sync (G_DBUS_PROXY (manager->screensaver_proxy),
+                                        "SetActive",
+                                        g_variant_new ("(b)", TRUE),
+                                        G_DBUS_CALL_FLAGS_NONE,
+                                        -1, NULL, NULL);
+                return;
+        }
+
+        g_dbus_proxy_call_sync (G_DBUS_PROXY (manager->screensaver_proxy),
+                                "Lock",
+                                NULL,
+                                G_DBUS_CALL_FLAGS_NONE,
+                                -1, NULL, NULL);
+}
+
+static void
+do_lid_closed_action (GsdPowerManager *manager)
+{
+        /* play a sound, using sounds from the naming spec */
+        ca_context_play (ca_gtk_context_get (), 0,
+                         CA_PROP_EVENT_ID, "lid-close",
+                         /* TRANSLATORS: this is the sound description */
+                         CA_PROP_EVENT_DESCRIPTION, _("Lid has been closed"),
+                         NULL);
+
+        /* refresh RANDR so we get an accurate view of what monitors are plugged in when the lid is closed */
+        gnome_rr_screen_refresh (manager->rr_screen, NULL); /* NULL-GError */
+
+        if (suspend_on_lid_close (manager)) {
+                gboolean is_inhibited;
+
+                idle_is_session_inhibited (manager,
+                                           GSM_INHIBITOR_FLAG_SUSPEND,
+                                           &is_inhibited);
+                if (is_inhibited) {
+                        g_debug ("Suspend is inhibited but lid is closed, locking the screen");
+                        /* We put the screensaver on * as we're not suspending,
+                         * but the lid is closed */
+                        lock_screensaver (manager);
+                }
+        }
+}
+
+static void
+lid_state_changed_cb (UpClient *client, GParamSpec *pspec, GsdPowerManager *manager)
+{
+        gboolean tmp;
+
+        if (!manager->lid_is_present)
+                return;
+
+        /* same lid state */
+        tmp = up_client_get_lid_is_closed (manager->up_client);
+        if (manager->lid_is_closed == tmp)
+                return;
+        manager->lid_is_closed = tmp;
+        g_debug ("up changed: lid is now %s", tmp ? "closed" : "open");
+
+        if (manager->lid_is_closed)
+                do_lid_closed_action (manager);
+        else
+                do_lid_open_action (manager);
+}
+
+static const gchar *
+idle_mode_to_string (GsdPowerIdleMode mode)
+{
+        if (mode == GSD_POWER_IDLE_MODE_NORMAL)
+                return "normal";
+        if (mode == GSD_POWER_IDLE_MODE_DIM)
+                return "dim";
+        if (mode == GSD_POWER_IDLE_MODE_BLANK)
+                return "blank";
+        if (mode == GSD_POWER_IDLE_MODE_SLEEP)
+                return "sleep";
+        return "unknown";
+}
+
+static const char *
+idle_watch_id_to_string (GsdPowerManager *manager, guint id)
+{
+        if (id == manager->idle_dim_id)
+                return "dim";
+        if (id == manager->idle_blank_id)
+                return "blank";
+        if (id == manager->idle_sleep_id)
+                return "sleep";
+        if (id == manager->idle_sleep_warning_id)
+                return "sleep-warning";
+        return NULL;
+}
+
+static void
+backlight_iface_emit_changed (GsdPowerManager *manager,
+                              const char      *interface_name,
+                              gint32           value,
+                              const char      *source)
+{
+        GVariant *params;
+
+        /* not yet connected to the bus */
+        if (manager->connection == NULL)
+                return;
+
+        params = g_variant_new_parsed ("(%s, [{'Brightness', <%i>}], @as [])", interface_name,
+                                       value);
+        g_dbus_connection_emit_signal (manager->connection,
+                                       NULL,
+                                       GSD_POWER_DBUS_PATH,
+                                       "org.freedesktop.DBus.Properties",
+                                       "PropertiesChanged",
+                                       params, NULL);
+
+        if (!source)
+                return;
+
+        g_dbus_connection_emit_signal (manager->connection,
+                                       NULL,
+                                       GSD_POWER_DBUS_PATH,
+                                       GSD_POWER_DBUS_INTERFACE_KEYBOARD,
+                                       "BrightnessChanged",
+                                       g_variant_new ("(is)", value, source),
+                                       NULL);
+}
+
+static void
+backlight_notify_brightness_cb (GsdPowerManager *manager, GParamSpec *pspec, GsdBacklight *backlight)
+{
+        backlight_iface_emit_changed (manager, GSD_POWER_DBUS_INTERFACE_SCREEN,
+                                      gsd_backlight_get_brightness (backlight, NULL), NULL);
+}
+
+static void
+display_backlight_dim (GsdPowerManager *manager,
+                       gint idle_percentage)
+{
+        gint brightness;
+
+        if (!manager->backlight)
+                return;
+
+        /* Fetch the current target brightness (not the actual display brightness)
+         * and return if it is already lower than the idle percentage. */
+        gsd_backlight_get_brightness (manager->backlight, &brightness);
+        if (brightness < idle_percentage)
+                return;
+
+        manager->pre_dim_brightness = brightness;
+        gsd_backlight_set_brightness_async (manager->backlight, idle_percentage, NULL, NULL, NULL);
+}
+
+static gboolean
+kbd_backlight_dim (GsdPowerManager *manager,
+                   gint idle_percentage,
+                   GError **error)
+{
+        gboolean ret;
+        gint idle;
+        gint max;
+        gint now;
+
+        if (manager->upower_kbd_proxy == NULL)
+                return TRUE;
+
+        now = manager->kbd_brightness_now;
+        max = manager->kbd_brightness_max;
+        idle = PERCENTAGE_TO_ABS (0, max, idle_percentage);
+        if (idle > now) {
+                g_debug ("kbd brightness already now %i/%i, so "
+                         "ignoring dim to %i/%i",
+                         now, max, idle, max);
+                return TRUE;
+        }
+        ret = upower_kbd_set_brightness (manager, idle, error);
+        if (!ret)
+                return FALSE;
+
+        /* save for undim */
+        manager->kbd_brightness_pre_dim = now;
+        return TRUE;
+}
+
+static void
+upower_kbd_proxy_signal_cb (GDBusProxy  *proxy,
+                            const gchar *sender_name,
+                            const gchar *signal_name,
+                            GVariant    *parameters,
+                            gpointer     user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+        gint brightness, percentage;
+        const gchar *source;
+
+        if (g_strcmp0 (signal_name, "BrightnessChangedWithSource") != 0)
+                return;
+
+        g_variant_get (parameters, "(i&s)", &brightness, &source);
+
+        /* Ignore changes caused by us calling UPower's SetBrightness method,
+         * we already call backlight_iface_emit_changed for these after the
+         * SetBrightness method call completes. */
+        if (g_strcmp0 (source, "external") == 0)
+                return;
+
+        manager->kbd_brightness_now = brightness;
+        percentage = ABS_TO_PERCENTAGE (0,
+                                        manager->kbd_brightness_max,
+                                        manager->kbd_brightness_now);
+        backlight_iface_emit_changed (manager, GSD_POWER_DBUS_INTERFACE_KEYBOARD, percentage, source);
+}
+
+static gboolean
+is_session_active (GsdPowerManager *manager)
+{
+        GVariant *variant;
+        gboolean is_session_active = FALSE;
+
+        variant = g_dbus_proxy_get_cached_property (G_DBUS_PROXY (manager->session),
+                                                    "SessionIsActive");
+        if (variant) {
+                is_session_active = g_variant_get_boolean (variant);
+                g_variant_unref (variant);
+        }
+
+        return is_session_active;
+}
+
+static void
+idle_set_mode (GsdPowerManager *manager, GsdPowerIdleMode mode)
+{
+        gboolean ret = FALSE;
+        GError *error = NULL;
+        gint idle_percentage;
+        GsdPowerActionType action_type;
+
+        /* Ignore attempts to set "less idle" modes */
+        if (mode <= manager->current_idle_mode &&
+            mode != GSD_POWER_IDLE_MODE_NORMAL) {
+                g_debug ("Not going to 'less idle' mode %s (current: %s)",
+                         idle_mode_to_string (mode),
+                         idle_mode_to_string (manager->current_idle_mode));
+                return;
+        }
+
+        /* ensure we're still on an active console */
+        if (!manager->session_is_active) {
+                g_debug ("ignoring state transition to %s as inactive",
+                         idle_mode_to_string (mode));
+                return;
+        }
+
+        manager->current_idle_mode = mode;
+        g_debug ("Doing a state transition: %s", idle_mode_to_string (mode));
+
+        /* if we're moving to an idle mode, make sure
+         * we add a watch to take us back to normal */
+        if (mode != GSD_POWER_IDLE_MODE_NORMAL) {
+                if (manager->user_active_id < 1) {
+                    manager->user_active_id = gnome_idle_monitor_add_user_active_watch (manager->idle_monitor,
+                                                                                        idle_became_active_cb,
+                                                                                        manager,
+                                                                                        NULL);
+                    g_debug ("installing idle_became_active_cb to clear sleep warning when transitioning away from normal (%i)",
+                             manager->user_active_id);
+                }
+        }
+
+        /* save current brightness, and set dim level */
+        if (mode == GSD_POWER_IDLE_MODE_DIM) {
+                /* display backlight */
+                idle_percentage = g_settings_get_int (manager->settings,
+                                                      "idle-brightness");
+                display_backlight_dim (manager, idle_percentage);
+
+                /* keyboard backlight */
+                ret = kbd_backlight_dim (manager, idle_percentage, &error);
+                if (!ret) {
+                        g_warning ("failed to set dim kbd backlight to %i%%: %s",
+                                   idle_percentage,
+                                   error->message);
+                        g_clear_error (&error);
+                }
+
+        /* turn off screen and kbd */
+        } else if (mode == GSD_POWER_IDLE_MODE_BLANK) {
+
+                backlight_disable (manager);
+
+                /* only toggle keyboard if present and not already toggled */
+                if (manager->upower_kbd_proxy &&
+                    manager->kbd_brightness_old == -1) {
+                        if (upower_kbd_toggle (manager, &error) < 0) {
+                                g_warning ("failed to turn the kbd backlight off: %s",
+                                           error->message);
+                                g_error_free (error);
+                        }
+                }
+
+        /* sleep */
+        } else if (mode == GSD_POWER_IDLE_MODE_SLEEP) {
+
+                if (up_client_get_on_battery (manager->up_client)) {
+                        action_type = g_settings_get_enum (manager->settings,
+                                                           "sleep-inactive-battery-type");
+                } else {
+                        action_type = g_settings_get_enum (manager->settings,
+                                                           "sleep-inactive-ac-type");
+                }
+                do_power_action_type (manager, action_type);
+
+        /* turn on screen and restore user-selected brightness level */
+        } else if (mode == GSD_POWER_IDLE_MODE_NORMAL) {
+
+                backlight_enable (manager);
+
+                /* reset brightness if we dimmed */
+                if (manager->backlight && manager->pre_dim_brightness >= 0) {
+                        gsd_backlight_set_brightness_async (manager->backlight,
+                                                            manager->pre_dim_brightness,
+                                                            NULL, NULL, NULL);
+                        /* XXX: Ideally we would do this from the async callback. */
+                        manager->pre_dim_brightness = -1;
+                }
+
+                /* only toggle keyboard if present and already toggled off */
+                if (manager->upower_kbd_proxy &&
+                    manager->kbd_brightness_old != -1) {
+                        if (upower_kbd_toggle (manager, &error) < 0) {
+                                g_warning ("failed to turn the kbd backlight on: %s",
+                                           error->message);
+                                g_clear_error (&error);
+                        }
+                }
+
+                /* reset kbd brightness if we dimmed */
+                if (manager->kbd_brightness_pre_dim >= 0) {
+                        ret = upower_kbd_set_brightness (manager,
+                                                         manager->kbd_brightness_pre_dim,
+                                                         &error);
+                        if (!ret) {
+                                g_warning ("failed to restore kbd backlight to %i: %s",
+                                           manager->kbd_brightness_pre_dim,
+                                           error->message);
+                                g_error_free (error);
+                        }
+                        manager->kbd_brightness_pre_dim = -1;
+                }
+
+        }
+}
+
+static gboolean
+idle_is_session_inhibited (GsdPowerManager  *manager,
+                           GsmInhibitorFlag  mask,
+                           gboolean         *is_inhibited)
+{
+        GVariant *variant;
+        GsmInhibitorFlag inhibited_actions;
+
+        /* not yet connected to gnome-session */
+        if (manager->session == NULL)
+                return FALSE;
+
+        variant = g_dbus_proxy_get_cached_property (G_DBUS_PROXY (manager->session),
+                                                    "InhibitedActions");
+        if (!variant)
+                return FALSE;
+
+        inhibited_actions = g_variant_get_uint32 (variant);
+        g_variant_unref (variant);
+
+        *is_inhibited = (inhibited_actions & mask);
+
+        return TRUE;
+}
+
+static void
+clear_idle_watch (GnomeIdleMonitor *monitor,
+                  guint            *id)
+{
+        if (*id == 0)
+                return;
+        gnome_idle_monitor_remove_watch (monitor, *id);
+        *id = 0;
+}
+
+static gboolean
+is_power_save_active (GsdPowerManager *manager)
+{
+        /*
+         * If we have power-profiles-daemon, then we follow its setting,
+         * otherwise we go into power-save mode when the battery is low.
+         */
+        if (manager->power_profiles_proxy &&
+            g_dbus_proxy_get_name_owner (manager->power_profiles_proxy))
+                return manager->power_saver_enabled;
+        else
+                return manager->battery_is_low;
+}
+
+static void
+idle_configure (GsdPowerManager *manager)
+{
+        gboolean is_idle_inhibited;
+        GsdPowerActionType action_type;
+        guint timeout_sleep;
+        guint timeout_dim;
+        gboolean on_battery;
+
+        if (!idle_is_session_inhibited (manager,
+                                        GSM_INHIBITOR_FLAG_IDLE,
+                                        &is_idle_inhibited)) {
+                /* Session isn't available yet, postpone */
+                return;
+        }
+
+        /* set up blank callback only when the screensaver is on,
+         * as it's what will drive the blank */
+        clear_idle_watch (manager->idle_monitor,
+                          &manager->idle_blank_id);
+        if (manager->screensaver_active) {
+                /* The tail is wagging the dog.
+                 * The screensaver coming on will blank the screen.
+                 * If an event occurs while the screensaver is on,
+                 * the aggressive idle watch will handle it */
+                guint timeout_blank = SCREENSAVER_TIMEOUT_BLANK;
+                g_debug ("setting up blank callback for %is", timeout_blank);
+                manager->idle_blank_id = gnome_idle_monitor_add_idle_watch (manager->idle_monitor,
+                                                                                  timeout_blank * 1000,
+                                                                                  idle_triggered_idle_cb, manager, NULL);
+        }
+
+        /* are we inhibited from going idle */
+        if (!manager->session_is_active ||
+            (is_idle_inhibited && !manager->screensaver_active)) {
+                if (is_idle_inhibited && !manager->screensaver_active)
+                        g_debug ("inhibited and screensaver not active, so using normal state");
+                else
+                        g_debug ("inactive, so using normal state");
+                idle_set_mode (manager, GSD_POWER_IDLE_MODE_NORMAL);
+
+                clear_idle_watch (manager->idle_monitor,
+                                  &manager->idle_sleep_id);
+                clear_idle_watch (manager->idle_monitor,
+                                  &manager->idle_dim_id);
+                clear_idle_watch (manager->idle_monitor,
+                                  &manager->idle_sleep_warning_id);
+                notify_close_if_showing (&manager->notification_sleep_warning);
+                return;
+        }
+
+        /* only do the sleep timeout when the session is idle
+         * and we aren't inhibited from sleeping (or logging out, etc.) */
+        on_battery = up_client_get_on_battery (manager->up_client);
+        action_type = g_settings_get_enum (manager->settings, on_battery ?
+                                           "sleep-inactive-battery-type" : "sleep-inactive-ac-type");
+        timeout_sleep = 0;
+        if (!is_action_inhibited (manager, action_type)) {
+                gint timeout_sleep_;
+                timeout_sleep_ = g_settings_get_int (manager->settings, on_battery ?
+                                                     "sleep-inactive-battery-timeout" : "sleep-inactive-ac-timeout");
+                timeout_sleep = CLAMP (timeout_sleep_, 0, G_MAXINT);
+        }
+
+        clear_idle_watch (manager->idle_monitor,
+                          &manager->idle_sleep_id);
+        clear_idle_watch (manager->idle_monitor,
+                          &manager->idle_sleep_warning_id);
+
+        /* don't do any power saving if we're a VM */
+        if (manager->is_virtual_machine &&
+            (action_type == GSD_POWER_ACTION_SUSPEND ||
+             action_type == GSD_POWER_ACTION_HIBERNATE)) {
+                g_debug ("Ignoring sleep timeout with suspend action inside VM");
+                timeout_sleep = 0;
+        }
+
+        /* don't do any automatic logout if we are in GDM */
+        if (g_getenv ("RUNNING_UNDER_GDM") &&
+            (action_type == GSD_POWER_ACTION_LOGOUT)) {
+                g_debug ("Ignoring sleep timeout with logout action inside GDM");
+                timeout_sleep = 0;
+        }
+
+        if (timeout_sleep != 0) {
+                g_debug ("setting up sleep callback %is", timeout_sleep);
+
+                if (action_type != GSD_POWER_ACTION_NOTHING) {
+                        manager->idle_sleep_id = gnome_idle_monitor_add_idle_watch (manager->idle_monitor,
+                                                                                          timeout_sleep * 1000,
+                                                                                          idle_triggered_idle_cb, manager, NULL);
+                }
+
+                if (action_type == GSD_POWER_ACTION_LOGOUT ||
+                    action_type == GSD_POWER_ACTION_SUSPEND ||
+                    action_type == GSD_POWER_ACTION_HIBERNATE) {
+                        guint timeout_sleep_warning_msec;
+
+                        manager->sleep_action_type = action_type;
+                        timeout_sleep_warning_msec = timeout_sleep * IDLE_DELAY_TO_IDLE_DIM_MULTIPLIER * 1000;
+                        if (timeout_sleep_warning_msec * 1000 < MINIMUM_IDLE_DIM_DELAY) {
+                                /* 0 is not a valid idle timeout */
+                                timeout_sleep_warning_msec = 1;
+                        }
+
+                        g_debug ("setting up sleep warning callback %i msec", timeout_sleep_warning_msec);
+
+                        manager->idle_sleep_warning_id = gnome_idle_monitor_add_idle_watch (manager->idle_monitor,
+                                                                                                  timeout_sleep_warning_msec,
+                                                                                                  idle_triggered_idle_cb, manager, NULL);
+                }
+        }
+
+        if (manager->idle_sleep_warning_id == 0)
+                notify_close_if_showing (&manager->notification_sleep_warning);
+
+        /* set up dim callback for when the screen lock is not active,
+         * but only if we actually want to dim. */
+        timeout_dim = 0;
+        if (manager->screensaver_active) {
+                /* Don't dim when the screen lock is active */
+        } else if (is_power_save_active (manager)) {
+                /* Try to save power by dimming agressively */
+                timeout_dim = SCREENSAVER_TIMEOUT_BLANK;
+        } else {
+                if (g_settings_get_boolean (manager->settings, "idle-dim")) {
+                        timeout_dim = g_settings_get_uint (manager->settings_bus,
+                                                           "idle-delay");
+                        if (timeout_dim == 0) {
+                                timeout_dim = IDLE_DIM_BLANK_DISABLED_MIN;
+                        } else {
+                                timeout_dim *= IDLE_DELAY_TO_IDLE_DIM_MULTIPLIER;
+                                /* Don't bother dimming if the idle-delay is
+                                 * too low, we'll do that when we bring down the
+                                 * screen lock */
+                                if (timeout_dim < MINIMUM_IDLE_DIM_DELAY)
+                                        timeout_dim = 0;
+                        }
+                }
+        }
+
+        clear_idle_watch (manager->idle_monitor,
+                          &manager->idle_dim_id);
+
+        if (timeout_dim != 0) {
+                g_debug ("setting up dim callback for %is", timeout_dim);
+
+                manager->idle_dim_id = gnome_idle_monitor_add_idle_watch (manager->idle_monitor,
+                                                                                timeout_dim * 1000,
+                                                                                idle_triggered_idle_cb, manager, NULL);
+        }
+}
+
+static void
+hold_profile_cb (GObject      *source_object,
+                 GAsyncResult *res,
+                 gpointer      user_data)
+{
+        GsdPowerManager *manager = user_data;
+        g_autoptr(GError) error = NULL;
+        g_autoptr(GVariant) result = NULL;
+
+        result = g_dbus_proxy_call_finish (G_DBUS_PROXY (source_object),
+                                           res,
+                                           &error);
+        if (result == NULL) {
+                g_warning ("Couldn't hold power-saver profile: %s", error->message);
+                return;
+        }
+
+        if (g_variant_is_of_type (result, G_VARIANT_TYPE ("(u)"))) {
+                g_variant_get (result, "(u)", &manager->power_saver_cookie);
+                g_debug ("Holding power-saver profile with cookie %u", manager->power_saver_cookie);
+        } else {
+                g_warning ("Calling HoldProfile() did not return a uint32");
+        }
+}
+
+static void
+enable_power_saver (GsdPowerManager *manager)
+{
+        if (!manager->power_profiles_proxy)
+                return;
+        if (!g_settings_get_boolean (manager->settings, "power-saver-profile-on-low-battery"))
+                return;
+
+        g_debug ("Starting hold of power-saver profile");
+
+        g_dbus_proxy_call (manager->power_profiles_proxy,
+                           "HoldProfile",
+                           g_variant_new("(sss)",
+                                         "power-saver",
+                                         "Power saver profile when low on battery",
+                                         GSD_POWER_DBUS_NAME),
+                           G_DBUS_CALL_FLAGS_NONE,
+                           -1, manager->cancellable, hold_profile_cb, manager);
+}
+
+static void
+disable_power_saver (GsdPowerManager *manager)
+{
+        if (!manager->power_profiles_proxy || manager->power_saver_cookie == 0)
+                return;
+
+        g_debug ("Releasing power-saver profile");
+
+        g_dbus_proxy_call (manager->power_profiles_proxy,
+                           "ReleaseProfile",
+                           g_variant_new ("(u)", manager->power_saver_cookie),
+                           G_DBUS_CALL_FLAGS_NONE,
+                           -1, NULL, dbus_call_log_error, "ReleaseProfile failed");
+        manager->power_saver_cookie = 0;
+}
+
+static void
+main_battery_or_ups_low_changed (GsdPowerManager *manager,
+                                 gboolean         is_low)
+{
+        if (is_low == manager->battery_is_low)
+                return;
+        manager->battery_is_low = is_low;
+        idle_configure (manager);
+        if (is_low)
+                enable_power_saver (manager);
+        else
+                disable_power_saver (manager);
+}
+
+static gboolean
+temporary_unidle_done_cb (GsdPowerManager *manager)
+{
+        idle_set_mode (manager, manager->previous_idle_mode);
+        manager->temporary_unidle_on_ac_id = 0;
+        return FALSE;
+}
+
+static void
+set_temporary_unidle_on_ac (GsdPowerManager *manager,
+                            gboolean         enable)
+{
+        if (!enable) {
+                /* Don't automatically go back to the previous idle
+                   mode. The caller probably has a better idea of
+                   which state to move to when disabling us. */
+                if (manager->temporary_unidle_on_ac_id != 0) {
+                        g_source_remove (manager->temporary_unidle_on_ac_id);
+                        manager->temporary_unidle_on_ac_id = 0;
+                }
+        } else {
+                /* Don't overwrite the previous idle mode when an unidle is
+                 * already on-going */
+                if (manager->temporary_unidle_on_ac_id != 0) {
+                        g_source_remove (manager->temporary_unidle_on_ac_id);
+                } else {
+                        manager->previous_idle_mode = manager->current_idle_mode;
+                        idle_set_mode (manager, GSD_POWER_IDLE_MODE_NORMAL);
+                }
+                manager->temporary_unidle_on_ac_id = g_timeout_add_seconds (POWER_UP_TIME_ON_AC,
+                                                                                  (GSourceFunc) temporary_unidle_done_cb,
+                                                                                  manager);
+                g_source_set_name_by_id (manager->temporary_unidle_on_ac_id, "[gnome-settings-daemon] temporary_unidle_done_cb");
+        }
+}
+
+static void
+up_client_on_battery_cb (UpClient *client,
+                         GParamSpec *pspec,
+                         GsdPowerManager *manager)
+{
+        if (up_client_get_on_battery (manager->up_client)) {
+                ca_context_play (ca_gtk_context_get (), 0,
+                                 CA_PROP_EVENT_ID, "power-unplug",
+                                 /* TRANSLATORS: this is the sound description */
+                                 CA_PROP_EVENT_DESCRIPTION, _("On battery power"), NULL);
+        } else {
+                ca_context_play (ca_gtk_context_get (), 0,
+                                 CA_PROP_EVENT_ID, "power-plug",
+                                 /* TRANSLATORS: this is the sound description */
+                                 CA_PROP_EVENT_DESCRIPTION, _("On AC power"), NULL);
+
+        }
+
+        idle_configure (manager);
+
+        if (manager->lid_is_closed)
+                return;
+
+        if (manager->current_idle_mode == GSD_POWER_IDLE_MODE_BLANK ||
+            manager->current_idle_mode == GSD_POWER_IDLE_MODE_DIM ||
+            manager->temporary_unidle_on_ac_id != 0)
+                set_temporary_unidle_on_ac (manager, TRUE);
+}
+
+static void
+gsd_power_manager_finalize (GObject *object)
+{
+        GsdPowerManager *manager;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GSD_IS_POWER_MANAGER (object));
+
+        manager = GSD_POWER_MANAGER (object);
+
+        g_return_if_fail (manager != NULL);
+
+        gsd_power_manager_stop (manager);
+
+        g_clear_object (&manager->connection);
+
+        if (manager->name_id != 0)
+                g_bus_unown_name (manager->name_id);
+
+        if (manager->iio_proxy_watch_id != 0)
+                g_bus_unwatch_name (manager->iio_proxy_watch_id);
+        manager->iio_proxy_watch_id = 0;
+
+        G_OBJECT_CLASS (gsd_power_manager_parent_class)->finalize (object);
+}
+
+static void
+gsd_power_manager_class_init (GsdPowerManagerClass *klass)
+{
+        GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+        object_class->finalize = gsd_power_manager_finalize;
+
+        notify_init ("gnome-settings-daemon");
+}
+
+static void
+handle_screensaver_active (GsdPowerManager *manager,
+                           GVariant        *parameters)
+{
+        gboolean active;
+
+        g_variant_get (parameters, "(b)", &active);
+        g_debug ("Received screensaver ActiveChanged signal: %d (old: %d)", active, manager->screensaver_active);
+        if (manager->screensaver_active != active) {
+                manager->screensaver_active = active;
+                idle_configure (manager);
+
+                /* Setup blank as soon as the screensaver comes on,
+                 * and its fade has finished.
+                 *
+                 * See also idle_configure() */
+                if (active)
+                        idle_set_mode (manager, GSD_POWER_IDLE_MODE_BLANK);
+        }
+}
+
+static void
+handle_wake_up_screen (GsdPowerManager *manager)
+{
+        set_temporary_unidle_on_ac (manager, TRUE);
+}
+
+static void
+screensaver_signal_cb (GDBusProxy *proxy,
+                       const gchar *sender_name,
+                       const gchar *signal_name,
+                       GVariant *parameters,
+                       gpointer user_data)
+{
+        if (g_strcmp0 (signal_name, "ActiveChanged") == 0)
+                handle_screensaver_active (GSD_POWER_MANAGER (user_data), parameters);
+        else if (g_strcmp0 (signal_name, "WakeUpScreen") == 0)
+                handle_wake_up_screen (GSD_POWER_MANAGER (user_data));
+}
+
+static void
+power_profiles_proxy_signal_cb (GDBusProxy  *proxy,
+                               const gchar *sender_name,
+                               const gchar *signal_name,
+                               GVariant    *parameters,
+                               gpointer     user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+
+        if (g_strcmp0 (signal_name, "ProfileReleased") != 0)
+                return;
+        manager->power_saver_cookie = 0;
+}
+
+static void
+update_active_power_profile (GsdPowerManager *manager)
+{
+        g_autoptr(GVariant) v = NULL;
+        const char *active_profile;
+        gboolean power_saver_enabled;
+
+        v = g_dbus_proxy_get_cached_property (manager->power_profiles_proxy, "ActiveProfile");
+        if (v) {
+                active_profile = g_variant_get_string (v, NULL);
+                power_saver_enabled = g_strcmp0 (active_profile, "power-saver") == 0;
+                if (power_saver_enabled != manager->power_saver_enabled) {
+                        manager->power_saver_enabled = power_saver_enabled;
+                        idle_configure (manager);
+                }
+        } else {
+                /* p-p-d might have disappeared from the bus */
+                idle_configure (manager);
+        }
+}
+
+static void
+power_profiles_proxy_ready_cb (GObject             *source_object,
+                              GAsyncResult        *res,
+                              gpointer             user_data)
+{
+        g_autoptr(GError) error = NULL;
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+
+        manager->power_profiles_proxy = g_dbus_proxy_new_for_bus_finish (res, &error);
+        if (manager->power_profiles_proxy == NULL) {
+                g_debug ("Could not connect to power-profiles-daemon: %s", error->message);
+                return;
+        }
+
+        g_signal_connect_swapped (manager->power_profiles_proxy,
+                                  "g-properties-changed",
+                                  G_CALLBACK (update_active_power_profile),
+                                  manager);
+        g_signal_connect (manager->power_profiles_proxy, "g-signal",
+                          G_CALLBACK (power_profiles_proxy_signal_cb),
+                          manager);
+
+        update_active_power_profile (manager);
+}
+
+static void
+power_keyboard_proxy_ready_cb (GObject             *source_object,
+                               GAsyncResult        *res,
+                               gpointer             user_data)
+{
+        GVariant *k_now = NULL;
+        GVariant *k_max = NULL;
+        GError *error = NULL;
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+        gint percentage;
+
+        manager->upower_kbd_proxy = g_dbus_proxy_new_for_bus_finish (res, &error);
+        if (manager->upower_kbd_proxy == NULL) {
+                g_warning ("Could not connect to UPower: %s",
+                           error->message);
+                g_error_free (error);
+                goto out;
+        }
+
+        g_signal_connect (manager->upower_kbd_proxy, "g-signal",
+                          G_CALLBACK (upower_kbd_proxy_signal_cb),
+                          manager);
+
+        k_now = g_dbus_proxy_call_sync (manager->upower_kbd_proxy,
+                                        "GetBrightness",
+                                        NULL,
+                                        G_DBUS_CALL_FLAGS_NONE,
+                                        -1,
+                                        manager->cancellable,
+                                        &error);
+        if (k_now == NULL) {
+                if (error->domain != G_DBUS_ERROR ||
+                    error->code != G_DBUS_ERROR_UNKNOWN_METHOD) {
+                        g_warning ("Failed to get brightness: %s",
+                                   error->message);
+                } else {
+                        /* Keyboard brightness is not available */
+                        g_clear_object (&manager->upower_kbd_proxy);
+                }
+                g_error_free (error);
+                goto out;
+        }
+
+        k_max = g_dbus_proxy_call_sync (manager->upower_kbd_proxy,
+                                        "GetMaxBrightness",
+                                        NULL,
+                                        G_DBUS_CALL_FLAGS_NONE,
+                                        -1,
+                                        manager->cancellable,
+                                        &error);
+        if (k_max == NULL) {
+                g_warning ("Failed to get max brightness: %s", error->message);
+                g_error_free (error);
+                goto out;
+        }
+
+        g_variant_get (k_now, "(i)", &manager->kbd_brightness_now);
+        g_variant_get (k_max, "(i)", &manager->kbd_brightness_max);
+
+        /* set brightness to max if not currently set so is something
+         * sensible */
+        if (manager->kbd_brightness_now < 0) {
+                gboolean ret;
+                ret = upower_kbd_set_brightness (manager,
+                                                 manager->kbd_brightness_max,
+                                                 &error);
+                if (!ret) {
+                        g_warning ("failed to initialize kbd backlight to %i: %s",
+                                   manager->kbd_brightness_max,
+                                   error->message);
+                        g_error_free (error);
+                }
+        }
+
+        /* Tell the front-end that the brightness changed from
+         * its default "-1/no keyboard backlight available" default */
+        percentage = ABS_TO_PERCENTAGE (0,
+                                        manager->kbd_brightness_max,
+                                        manager->kbd_brightness_now);
+        backlight_iface_emit_changed (manager, GSD_POWER_DBUS_INTERFACE_KEYBOARD, percentage, "initial value");
+
+out:
+        if (k_now != NULL)
+                g_variant_unref (k_now);
+        if (k_max != NULL)
+                g_variant_unref (k_max);
+}
+
+static void
+show_sleep_warning (GsdPowerManager *manager)
+{
+        /* close any existing notification of this class */
+        notify_close_if_showing (&manager->notification_sleep_warning);
+
+        /* create a new notification */
+        switch (manager->sleep_action_type) {
+        case GSD_POWER_ACTION_LOGOUT:
+                create_notification (_("Automatic logout"), _("You will soon log out because of inactivity."),
+                                     NULL, NOTIFICATION_PRIVACY_USER,
+                                     &manager->notification_sleep_warning);
+                break;
+        case GSD_POWER_ACTION_SUSPEND:
+                create_notification (_("Automatic suspend"), _("Suspending soon because of inactivity."),
+                                     NULL, NOTIFICATION_PRIVACY_SYSTEM,
+                                     &manager->notification_sleep_warning);
+                break;
+        case GSD_POWER_ACTION_HIBERNATE:
+                create_notification (_("Automatic hibernation"), _("Suspending soon because of inactivity."),
+                                     NULL, NOTIFICATION_PRIVACY_SYSTEM,
+                                     &manager->notification_sleep_warning);
+                break;
+        default:
+                g_assert_not_reached ();
+                break;
+        }
+        notify_notification_set_timeout (manager->notification_sleep_warning,
+                                         NOTIFY_EXPIRES_NEVER);
+        notify_notification_set_urgency (manager->notification_sleep_warning,
+                                         NOTIFY_URGENCY_CRITICAL);
+
+        notify_notification_show (manager->notification_sleep_warning, NULL);
+}
+
+static void
+idle_set_mode_no_temp (GsdPowerManager  *manager,
+                       GsdPowerIdleMode  mode)
+{
+        if (manager->temporary_unidle_on_ac_id != 0) {
+                manager->previous_idle_mode = mode;
+                return;
+        }
+
+        idle_set_mode (manager, mode);
+}
+
+static void
+idle_triggered_idle_cb (GnomeIdleMonitor *monitor,
+                        guint             watch_id,
+                        gpointer          user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+        const char *id_name;
+
+        id_name = idle_watch_id_to_string (manager, watch_id);
+        if (id_name == NULL)
+                g_debug ("idletime watch: %i", watch_id);
+        else
+                g_debug ("idletime watch: %s (%i)", id_name, watch_id);
+
+        if (watch_id == manager->idle_dim_id) {
+                idle_set_mode_no_temp (manager, GSD_POWER_IDLE_MODE_DIM);
+        } else if (watch_id == manager->idle_blank_id) {
+                idle_set_mode_no_temp (manager, GSD_POWER_IDLE_MODE_BLANK);
+        } else if (watch_id == manager->idle_sleep_id) {
+                idle_set_mode_no_temp (manager, GSD_POWER_IDLE_MODE_SLEEP);
+        } else if (watch_id == manager->idle_sleep_warning_id) {
+                show_sleep_warning (manager);
+
+                if (manager->user_active_id < 1) {
+                    manager->user_active_id = gnome_idle_monitor_add_user_active_watch (manager->idle_monitor,
+                                                                                        idle_became_active_cb,
+                                                                                        manager,
+                                                                                        NULL);
+                    g_debug ("installing idle_became_active_cb to clear sleep warning on activity (%i)",
+                             manager->user_active_id);
+                }
+        }
+}
+
+static void
+idle_became_active_cb (GnomeIdleMonitor *monitor,
+                       guint             watch_id,
+                       gpointer          user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+
+        g_debug ("idletime reset (%i)", watch_id);
+
+        set_temporary_unidle_on_ac (manager, FALSE);
+
+        /* close any existing notification about idleness */
+        notify_close_if_showing (&manager->notification_sleep_warning);
+
+        idle_set_mode (manager, GSD_POWER_IDLE_MODE_NORMAL);
+        manager->user_active_id = 0;
+}
+
+static void
+ch_backlight_renormalize (GsdPowerManager *manager)
+{
+        if (manager->ambient_percentage_old < 0)
+                return;
+        if (manager->ambient_last_absolute < 0)
+                return;
+        manager->ambient_norm_value = manager->ambient_last_absolute /
+                                        (gdouble) manager->ambient_percentage_old;
+        manager->ambient_norm_value *= 100.f;
+        manager->ambient_norm_required = FALSE;
+}
+
+static void
+engine_settings_key_changed_cb (GSettings *settings,
+                                const gchar *key,
+                                GsdPowerManager *manager)
+{
+        if (g_str_has_prefix (key, "sleep-inactive") ||
+            g_str_equal (key, "idle-delay") ||
+            g_str_equal (key, "idle-dim")) {
+                idle_configure (manager);
+                return;
+        }
+        if (g_str_equal (key, "power-saver-profile-on-low-battery")) {
+                if (manager->battery_is_low &&
+                    g_settings_get_boolean (settings, key))
+                        enable_power_saver (manager);
+                else
+                        disable_power_saver (manager);
+                return;
+        }
+}
+
+static void
+engine_session_properties_changed_cb (GDBusProxy      *session,
+                                      GVariant        *changed,
+                                      char           **invalidated,
+                                      GsdPowerManager *manager)
+{
+        GVariant *v;
+
+        v = g_variant_lookup_value (changed, "SessionIsActive", G_VARIANT_TYPE_BOOLEAN);
+        if (v) {
+                gboolean active;
+
+                active = g_variant_get_boolean (v);
+                g_debug ("Received session is active change: now %s", active ? "active" : "inactive");
+                manager->session_is_active = active;
+                /* when doing the fast-user-switch into a new account,
+                 * ensure the new account is undimmed and with the backlight on */
+                if (active) {
+                        idle_set_mode (manager, GSD_POWER_IDLE_MODE_NORMAL);
+                        iio_proxy_claim_light (manager, TRUE);
+                } else {
+                        iio_proxy_claim_light (manager, FALSE);
+                }
+                g_variant_unref (v);
+
+                sync_lid_inhibitor (manager);
+        }
+
+        v = g_variant_lookup_value (changed, "InhibitedActions", G_VARIANT_TYPE_UINT32);
+        if (v) {
+                g_variant_unref (v);
+                g_debug ("Received gnome session inhibitor change");
+                idle_configure (manager);
+        }
+}
+
+static void
+inhibit_lid_switch_done (GObject      *source,
+                         GAsyncResult *result,
+                         gpointer      user_data)
+{
+        GDBusProxy *proxy = G_DBUS_PROXY (source);
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+        GError *error = NULL;
+        GVariant *res;
+        GUnixFDList *fd_list = NULL;
+        gint idx;
+
+        res = g_dbus_proxy_call_with_unix_fd_list_finish (proxy, &fd_list, result, &error);
+        if (res == NULL) {
+                g_warning ("Unable to inhibit lid switch: %s", error->message);
+                g_error_free (error);
+        } else {
+                g_variant_get (res, "(h)", &idx);
+                manager->inhibit_lid_switch_fd = g_unix_fd_list_get (fd_list, idx, &error);
+                if (manager->inhibit_lid_switch_fd == -1) {
+                        g_warning ("Failed to receive system inhibitor fd: %s", error->message);
+                        g_error_free (error);
+                }
+                g_debug ("System inhibitor fd is %d", manager->inhibit_lid_switch_fd);
+                g_object_unref (fd_list);
+                g_variant_unref (res);
+        }
+}
+
+static void
+inhibit_lid_switch (GsdPowerManager *manager)
+{
+        GVariant *params;
+
+        if (manager->inhibit_lid_switch_taken) {
+                g_debug ("already inhibited lid-switch");
+                return;
+        }
+        g_debug ("Adding lid switch system inhibitor");
+        manager->inhibit_lid_switch_taken = TRUE;
+
+        params = g_variant_new ("(ssss)",
+                                "handle-lid-switch",
+                                g_get_user_name (),
+                                "External monitor attached or configuration changed recently",
+                                "block");
+        g_dbus_proxy_call_with_unix_fd_list (manager->logind_proxy,
+                                             "Inhibit",
+                                             params,
+                                             0,
+                                             G_MAXINT,
+                                             NULL,
+                                             NULL,
+                                             inhibit_lid_switch_done,
+                                             manager);
+}
+
+static void
+uninhibit_lid_switch (GsdPowerManager *manager)
+{
+        if (manager->inhibit_lid_switch_fd == -1) {
+                g_debug ("no lid-switch inhibitor");
+                return;
+        }
+        g_debug ("Removing lid switch system inhibitor");
+        close (manager->inhibit_lid_switch_fd);
+        manager->inhibit_lid_switch_fd = -1;
+        manager->inhibit_lid_switch_taken = FALSE;
+}
+
+static void
+inhibit_suspend_done (GObject      *source,
+                      GAsyncResult *result,
+                      gpointer      user_data)
+{
+        GDBusProxy *proxy = G_DBUS_PROXY (source);
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+        GError *error = NULL;
+        GVariant *res;
+        GUnixFDList *fd_list = NULL;
+        gint idx;
+
+        res = g_dbus_proxy_call_with_unix_fd_list_finish (proxy, &fd_list, result, &error);
+        if (res == NULL) {
+                g_warning ("Unable to inhibit suspend: %s", error->message);
+                g_error_free (error);
+        } else {
+                g_variant_get (res, "(h)", &idx);
+                manager->inhibit_suspend_fd = g_unix_fd_list_get (fd_list, idx, &error);
+                if (manager->inhibit_suspend_fd == -1) {
+                        g_warning ("Failed to receive system inhibitor fd: %s", error->message);
+                        g_error_free (error);
+                }
+                g_debug ("System inhibitor fd is %d", manager->inhibit_suspend_fd);
+                g_object_unref (fd_list);
+                g_variant_unref (res);
+        }
+}
+
+/* We take a delay inhibitor here, which causes logind to send a
+ * PrepareForSleep signal, which gives us a chance to lock the screen
+ * and do some other preparations.
+ */
+static void
+inhibit_suspend (GsdPowerManager *manager)
+{
+        if (manager->inhibit_suspend_taken) {
+                g_debug ("already inhibited lid-switch");
+                return;
+        }
+        g_debug ("Adding suspend delay inhibitor");
+        manager->inhibit_suspend_taken = TRUE;
+        g_dbus_proxy_call_with_unix_fd_list (manager->logind_proxy,
+                                             "Inhibit",
+                                             g_variant_new ("(ssss)",
+                                                            "sleep",
+                                                            g_get_user_name (),
+                                                            "GNOME needs to lock the screen",
+                                                            "delay"),
+                                             0,
+                                             G_MAXINT,
+                                             NULL,
+                                             NULL,
+                                             inhibit_suspend_done,
+                                             manager);
+}
+
+static void
+uninhibit_suspend (GsdPowerManager *manager)
+{
+        if (manager->inhibit_suspend_fd == -1) {
+                g_debug ("no suspend delay inhibitor");
+                return;
+        }
+        g_debug ("Removing suspend delay inhibitor");
+        close (manager->inhibit_suspend_fd);
+        manager->inhibit_suspend_fd = -1;
+        manager->inhibit_suspend_taken = FALSE;
+}
+
+static void
+sync_lid_inhibitor (GsdPowerManager *manager)
+{
+        g_debug ("Syncing lid inhibitor and grabbing it temporarily");
+
+        /* Uninhibiting is done in inhibit_lid_switch_timer_cb,
+         * since we want to give users a few seconds when unplugging
+         * and replugging an external monitor, not suspend right away.
+         */
+        inhibit_lid_switch (manager);
+        restart_inhibit_lid_switch_timer (manager);
+}
+
+static void
+on_randr_event (GnomeRRScreen *screen, gpointer user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+
+        g_debug ("Screen configuration changed");
+
+        sync_lid_inhibitor (manager);
+}
+
+static void
+handle_suspend_actions (GsdPowerManager *manager)
+{
+        /* close any existing notification about idleness */
+        notify_close_if_showing (&manager->notification_sleep_warning);
+        backlight_disable (manager);
+        uninhibit_suspend (manager);
+}
+
+static void
+handle_resume_actions (GsdPowerManager *manager)
+{
+        /* ensure we turn the panel back on after resume */
+        backlight_enable (manager);
+
+        /* set up the delay again */
+        inhibit_suspend (manager);
+}
+
+static void
+logind_proxy_signal_cb (GDBusProxy  *proxy,
+                        const gchar *sender_name,
+                        const gchar *signal_name,
+                        GVariant    *parameters,
+                        gpointer     user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+        gboolean is_about_to_suspend;
+
+        if (g_strcmp0 (signal_name, "PrepareForSleep") != 0)
+                return;
+        g_variant_get (parameters, "(b)", &is_about_to_suspend);
+        if (is_about_to_suspend) {
+                handle_suspend_actions (manager);
+        } else {
+                handle_resume_actions (manager);
+        }
+}
+
+static void
+on_rr_screen_acquired (GObject      *object,
+                       GAsyncResult *result,
+                       gpointer      user_data)
+{
+        GsdPowerManager *manager = user_data;
+        GError *error = NULL;
+
+        gnome_settings_profile_start (NULL);
+
+        manager->rr_screen = gnome_rr_screen_new_finish (result, &error);
+
+        if (error) {
+                g_warning ("Could not create GnomeRRScreen: %s\n", error->message);
+                g_error_free (error);
+                gnome_settings_profile_end (NULL);
+
+                return;
+        }
+
+        /* Resolve screen backlight */
+        manager->backlight = gsd_backlight_new (manager->rr_screen, NULL);
+
+        if (manager->backlight)
+                g_signal_connect_object (manager->backlight,
+                                         "notify::brightness",
+                                         G_CALLBACK (backlight_notify_brightness_cb),
+                                         manager, G_CONNECT_SWAPPED);
+
+        /* Set up a delay inhibitor to be informed about suspend attempts */
+        g_signal_connect (manager->logind_proxy, "g-signal",
+                          G_CALLBACK (logind_proxy_signal_cb),
+                          manager);
+        inhibit_suspend (manager);
+
+        /* track the active session */
+        manager->session = gnome_settings_bus_get_session_proxy ();
+        g_signal_connect_object (manager->session, "g-properties-changed",
+                                 G_CALLBACK (engine_session_properties_changed_cb),
+                                 manager, 0);
+        manager->session_is_active = is_session_active (manager);
+
+        /* set up the screens */
+        if (manager->lid_is_present) {
+                g_signal_connect (manager->rr_screen, "changed", G_CALLBACK (on_randr_event), manager);
+                watch_external_monitor (manager->rr_screen);
+                on_randr_event (manager->rr_screen, manager);
+        }
+
+        manager->screensaver_proxy = gnome_settings_bus_get_screen_saver_proxy ();
+
+        g_signal_connect (manager->screensaver_proxy, "g-signal",
+                          G_CALLBACK (screensaver_signal_cb), manager);
+
+        manager->kbd_brightness_old = -1;
+        manager->kbd_brightness_pre_dim = -1;
+        manager->pre_dim_brightness = -1;
+        g_signal_connect (manager->settings, "changed",
+                          G_CALLBACK (engine_settings_key_changed_cb), manager);
+        g_signal_connect (manager->settings_bus, "changed",
+                          G_CALLBACK (engine_settings_key_changed_cb), manager);
+        g_signal_connect (manager->up_client, "device-added",
+                          G_CALLBACK (engine_device_added_cb), manager);
+        g_signal_connect (manager->up_client, "device-removed",
+                          G_CALLBACK (engine_device_removed_cb), manager);
+        g_signal_connect_after (manager->up_client, "notify::lid-is-closed",
+                                G_CALLBACK (lid_state_changed_cb), manager);
+        g_signal_connect (manager->up_client, "notify::on-battery",
+                          G_CALLBACK (up_client_on_battery_cb), manager);
+
+        /* connect to power-profiles-daemon */
+        g_dbus_proxy_new_for_bus (G_BUS_TYPE_SYSTEM,
+                                  G_DBUS_PROXY_FLAGS_NONE,
+                                  NULL,
+                                  PPD_DBUS_NAME,
+                                  PPD_DBUS_PATH,
+                                  PPD_DBUS_INTERFACE,
+                                  manager->cancellable,
+                                  power_profiles_proxy_ready_cb,
+                                  manager);
+
+        /* connect to UPower for keyboard backlight control */
+        manager->kbd_brightness_now = -1;
+        g_dbus_proxy_new_for_bus (G_BUS_TYPE_SYSTEM,
+                                  G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES,
+                                  NULL,
+                                  UPOWER_DBUS_NAME,
+                                  UPOWER_DBUS_PATH_KBDBACKLIGHT,
+                                  UPOWER_DBUS_INTERFACE_KBDBACKLIGHT,
+                                  NULL,
+                                  power_keyboard_proxy_ready_cb,
+                                  manager);
+
+        manager->devices_array = g_ptr_array_new_with_free_func (g_object_unref);
+        manager->devices_notified_ht = g_hash_table_new_full (g_str_hash, g_str_equal,
+                                                              g_free, NULL);
+
+        /* create a fake virtual composite battery */
+        manager->device_composite = up_client_get_display_device (manager->up_client);
+        g_signal_connect (manager->device_composite, "notify::warning-level",
+                          G_CALLBACK (engine_device_warning_changed_cb), manager);
+
+        /* create IDLETIME watcher */
+        manager->idle_monitor = gnome_idle_monitor_new ();
+
+        /* coldplug the engine */
+        engine_coldplug (manager);
+        idle_configure (manager);
+
+        /* ensure the default dpms timeouts are cleared */
+        backlight_enable (manager);
+
+        if (!gnome_settings_is_wayland ())
+                manager->xscreensaver_watchdog_timer_id = gsd_power_enable_screensaver_watchdog ();
+
+        /* don't blank inside a VM */
+        manager->is_virtual_machine = gsd_power_is_hardware_a_vm ();
+
+        /* queue a signal in case the proxy from gnome-shell was created before we got here
+           (likely, considering that to get here we need a reply from gnome-shell)
+        */
+        if (manager->backlight) {
+                manager->ambient_percentage_old = gsd_backlight_get_brightness (manager->backlight, NULL);
+                backlight_iface_emit_changed (manager, GSD_POWER_DBUS_INTERFACE_SCREEN,
+                                              manager->ambient_percentage_old, NULL);
+        } else {
+                backlight_iface_emit_changed (manager, GSD_POWER_DBUS_INTERFACE_SCREEN, -1, NULL);
+        }
+
+        gnome_settings_profile_end (NULL);
+}
+
+static void
+iio_proxy_changed (GsdPowerManager *manager)
+{
+        GVariant *val_has = NULL;
+        GVariant *val_als = NULL;
+        gdouble brightness;
+        gdouble alpha;
+        gint64 current_time;
+        gint pc;
+
+        /* no display hardware */
+        if (!manager->backlight)
+                return;
+
+        /* disabled */
+        if (!g_settings_get_boolean (manager->settings, "ambient-enabled"))
+                return;
+
+        /* get latest results, which do not have to be Lux */
+        val_has = g_dbus_proxy_get_cached_property (manager->iio_proxy, "HasAmbientLight");
+        if (val_has == NULL || !g_variant_get_boolean (val_has))
+                goto out;
+        val_als = g_dbus_proxy_get_cached_property (manager->iio_proxy, "LightLevel");
+        if (val_als == NULL || g_variant_get_double (val_als) == 0.0)
+                goto out;
+        manager->ambient_last_absolute = g_variant_get_double (val_als);
+        g_debug ("Read last absolute light level: %f", manager->ambient_last_absolute);
+
+        /* the user has asked to renormalize */
+        if (manager->ambient_norm_required) {
+                g_debug ("Renormalizing light level from old light percentage: %.1f%%",
+                         manager->ambient_percentage_old);
+                manager->ambient_accumulator = manager->ambient_percentage_old;
+                ch_backlight_renormalize (manager);
+        }
+
+        /* time-weighted constant for moving average */
+        current_time = g_get_monotonic_time();
+        if (manager->ambient_last_time)
+                alpha = 1.0f / (1.0f + (GSD_AMBIENT_TIME_CONSTANT / (current_time - manager->ambient_last_time)));
+        else
+                alpha = 0.0f;
+        manager->ambient_last_time = current_time;
+
+        /* calculate exponential weighted moving average */
+        brightness = manager->ambient_last_absolute * 100.f / manager->ambient_norm_value;
+        brightness = MIN (brightness, 100.f);
+        brightness = MAX (brightness, 0.f);
+
+        manager->ambient_accumulator = (alpha * brightness) +
+                (1.0 - alpha) * manager->ambient_accumulator;
+
+        /* no valid readings yet */
+        if (manager->ambient_accumulator < 0.f)
+                goto out;
+
+        /* set new value */
+        g_debug ("Setting brightness from ambient %.1f%%",
+                 manager->ambient_accumulator);
+        pc = manager->ambient_accumulator;
+
+        if (manager->backlight)
+                gsd_backlight_set_brightness_async (manager->backlight, pc, NULL, NULL, NULL);
+
+        /* Assume setting worked. */
+        manager->ambient_percentage_old = pc;
+out:
+        g_clear_pointer (&val_has, g_variant_unref);
+        g_clear_pointer (&val_als, g_variant_unref);
+}
+
+static void
+iio_proxy_changed_cb (GDBusProxy *proxy,
+                      GVariant   *changed_properties,
+                      GStrv       invalidated_properties,
+                      gpointer    user_data)
+{
+        iio_proxy_changed ((GsdPowerManager *) user_data);
+}
+
+static void
+iio_proxy_appeared_cb (GDBusConnection *connection,
+                       const gchar *name,
+                       const gchar *name_owner,
+                       gpointer user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+        manager->iio_proxy =
+                g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+                                               0,
+                                               NULL,
+                                               "net.hadess.SensorProxy",
+                                               "/net/hadess/SensorProxy",
+                                               "net.hadess.SensorProxy",
+                                               NULL,
+                                               NULL);
+        iio_proxy_claim_light (manager, TRUE);
+}
+
+static void
+iio_proxy_vanished_cb (GDBusConnection *connection,
+                       const gchar *name,
+                       gpointer user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+        g_clear_object (&manager->iio_proxy);
+}
+
+gboolean
+gsd_power_manager_start (GsdPowerManager *manager,
+                         GError **error)
+{
+        g_debug ("Starting power manager");
+        gnome_settings_profile_start (NULL);
+
+        /* Check whether we have a lid first */
+        manager->up_client = up_client_new ();
+        manager->lid_is_present = up_client_get_lid_is_present (manager->up_client);
+        if (manager->lid_is_present)
+                manager->lid_is_closed = up_client_get_lid_is_closed (manager->up_client);
+
+        /* Set up the logind proxy */
+        manager->logind_proxy =
+                g_dbus_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
+                                               0,
+                                               NULL,
+                                               SYSTEMD_DBUS_NAME,
+                                               SYSTEMD_DBUS_PATH,
+                                               SYSTEMD_DBUS_INTERFACE,
+                                               NULL,
+                                               error);
+        if (manager->logind_proxy == NULL) {
+                g_debug ("No systemd (logind) support, disabling plugin");
+                return FALSE;
+        }
+
+        /* coldplug the list of screens */
+        gnome_rr_screen_new_async (gdk_screen_get_default (),
+                                   on_rr_screen_acquired, manager);
+
+        manager->settings = g_settings_new (GSD_POWER_SETTINGS_SCHEMA);
+        manager->settings_screensaver = g_settings_new ("org.gnome.desktop.screensaver");
+        manager->settings_bus = g_settings_new ("org.gnome.desktop.session");
+
+        /* setup ambient light support */
+        manager->iio_proxy_watch_id =
+                g_bus_watch_name (G_BUS_TYPE_SYSTEM,
+                                  "net.hadess.SensorProxy",
+                                  G_BUS_NAME_WATCHER_FLAGS_NONE,
+                                  iio_proxy_appeared_cb,
+                                  iio_proxy_vanished_cb,
+                                  manager, NULL);
+        manager->ambient_norm_required = TRUE;
+        manager->ambient_accumulator = -1.f;
+        manager->ambient_norm_value = -1.f;
+        manager->ambient_percentage_old = -1.f;
+        manager->ambient_last_absolute = -1.f;
+        manager->ambient_last_time = 0;
+
+        gnome_settings_profile_end (NULL);
+        return TRUE;
+}
+
+void
+gsd_power_manager_stop (GsdPowerManager *manager)
+{
+        g_debug ("Stopping power manager");
+
+        if (manager->inhibit_lid_switch_timer_id != 0) {
+                g_source_remove (manager->inhibit_lid_switch_timer_id);
+                manager->inhibit_lid_switch_timer_id = 0;
+        }
+
+        if (manager->cancellable != NULL) {
+                g_cancellable_cancel (manager->cancellable);
+                g_clear_object (&manager->cancellable);
+        }
+
+        g_clear_pointer (&manager->introspection_data, g_dbus_node_info_unref);
+
+        if (manager->up_client)
+                g_signal_handlers_disconnect_by_data (manager->up_client, manager);
+
+        g_clear_object (&manager->session);
+        g_clear_object (&manager->settings);
+        g_clear_object (&manager->settings_screensaver);
+        g_clear_object (&manager->settings_bus);
+        g_clear_object (&manager->up_client);
+
+        iio_proxy_claim_light (manager, FALSE);
+        g_clear_object (&manager->iio_proxy);
+
+        if (manager->inhibit_lid_switch_fd != -1) {
+                close (manager->inhibit_lid_switch_fd);
+                manager->inhibit_lid_switch_fd = -1;
+                manager->inhibit_lid_switch_taken = FALSE;
+        }
+        if (manager->inhibit_suspend_fd != -1) {
+                close (manager->inhibit_suspend_fd);
+                manager->inhibit_suspend_fd = -1;
+                manager->inhibit_suspend_taken = FALSE;
+        }
+
+        g_clear_object (&manager->logind_proxy);
+        g_clear_object (&manager->rr_screen);
+
+        g_clear_pointer (&manager->devices_array, g_ptr_array_unref);
+        g_clear_object (&manager->device_composite);
+        g_clear_pointer (&manager->devices_notified_ht, g_hash_table_destroy);
+
+        g_clear_object (&manager->screensaver_proxy);
+
+        disable_power_saver (manager);
+        g_clear_object (&manager->power_profiles_proxy);
+
+        play_loop_stop (&manager->critical_alert_timeout_id);
+
+        g_clear_object (&manager->idle_monitor);
+        g_clear_object (&manager->upower_kbd_proxy);
+
+        if (manager->xscreensaver_watchdog_timer_id > 0) {
+                g_source_remove (manager->xscreensaver_watchdog_timer_id);
+                manager->xscreensaver_watchdog_timer_id = 0;
+        }
+}
+
+static void
+gsd_power_manager_init (GsdPowerManager *manager)
+{
+        manager->inhibit_lid_switch_fd = -1;
+        manager->inhibit_suspend_fd = -1;
+        manager->cancellable = g_cancellable_new ();
+}
+
+/* returns new level */
+static void
+handle_method_call_keyboard (GsdPowerManager *manager,
+                             const gchar *method_name,
+                             GVariant *parameters,
+                             GDBusMethodInvocation *invocation)
+{
+        gint step;
+        gint value = -1;
+        gboolean ret;
+        guint percentage;
+        GError *error = NULL;
+
+        if (g_strcmp0 (method_name, "StepUp") == 0) {
+                g_debug ("keyboard step up");
+                step = BRIGHTNESS_STEP_AMOUNT (manager->kbd_brightness_max);
+                value = MIN (manager->kbd_brightness_now + step,
+                             manager->kbd_brightness_max);
+                ret = upower_kbd_set_brightness (manager, value, &error);
+
+        } else if (g_strcmp0 (method_name, "StepDown") == 0) {
+                g_debug ("keyboard step down");
+                step = BRIGHTNESS_STEP_AMOUNT (manager->kbd_brightness_max);
+                value = MAX (manager->kbd_brightness_now - step, 0);
+                ret = upower_kbd_set_brightness (manager, value, &error);
+
+        } else if (g_strcmp0 (method_name, "Toggle") == 0) {
+                value = upower_kbd_toggle (manager, &error);
+                ret = (value >= 0);
+
+        } else {
+                g_assert_not_reached ();
+        }
+
+        /* return value */
+        if (!ret) {
+                g_dbus_method_invocation_take_error (invocation,
+                                                     error);
+                backlight_iface_emit_changed (manager, GSD_POWER_DBUS_INTERFACE_KEYBOARD, -1, method_name);
+        } else {
+                percentage = ABS_TO_PERCENTAGE (0,
+                                                manager->kbd_brightness_max,
+                                                value);
+                g_dbus_method_invocation_return_value (invocation,
+                                                       g_variant_new ("(i)",
+                                                                      percentage));
+                backlight_iface_emit_changed (manager, GSD_POWER_DBUS_INTERFACE_KEYBOARD, percentage, method_name);
+        }
+}
+
+static void
+backlight_brightness_step_cb (GObject *object,
+                              GAsyncResult *res,
+                              gpointer user_data)
+{
+        GsdBacklight *backlight = GSD_BACKLIGHT (object);
+        GDBusMethodInvocation *invocation = G_DBUS_METHOD_INVOCATION (user_data);
+        GsdPowerManager *manager;
+        GError *error = NULL;
+        const char *connector;
+        gint brightness;
+
+        manager = g_object_get_data (G_OBJECT (invocation), "gsd-power-manager");
+        brightness = gsd_backlight_set_brightness_finish (backlight, res, &error);
+
+        /* ambient brightness no longer valid */
+        manager->ambient_percentage_old = brightness;
+        manager->ambient_norm_required = TRUE;
+
+        if (error) {
+                g_dbus_method_invocation_take_error (invocation,
+                                                     error);
+        } else {
+                connector = gsd_backlight_get_connector (backlight);
+
+                g_dbus_method_invocation_return_value (invocation,
+                                                       g_variant_new ("(is)",
+                                                                      brightness,
+                                                                      connector ? connector : ""));
+        }
+}
+
+/* Callback */
+static void
+backlight_brightness_set_cb (GObject *object,
+                             GAsyncResult *res,
+                             gpointer user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+        GsdBacklight *backlight = GSD_BACKLIGHT (object);
+        gint brightness;
+
+        /* Return the invocation. */
+        brightness = gsd_backlight_set_brightness_finish (backlight, res, NULL);
+
+        if (brightness >= 0) {
+                manager->ambient_percentage_old = brightness;
+                manager->ambient_norm_required = TRUE;
+        }
+
+        g_object_unref (manager);
+}
+
+static void
+handle_method_call_screen (GsdPowerManager *manager,
+                           const gchar *method_name,
+                           GVariant *parameters,
+                           GDBusMethodInvocation *invocation)
+{
+        if (!manager->backlight) {
+                g_dbus_method_invocation_return_error_literal (invocation,
+                                                               GSD_POWER_MANAGER_ERROR, GSD_POWER_MANAGER_ERROR_NO_BACKLIGHT,
+                                                               "No usable backlight could be found!");
+                return;
+        }
+
+        g_object_set_data_full (G_OBJECT (invocation), "gsd-power-manager", g_object_ref (manager), g_object_unref);
+
+        if (g_strcmp0 (method_name, "StepUp") == 0) {
+                g_debug ("screen step up");
+                gsd_backlight_step_up_async (manager->backlight, NULL, backlight_brightness_step_cb, invocation);
+
+        } else if (g_strcmp0 (method_name, "StepDown") == 0) {
+                g_debug ("screen step down");
+                gsd_backlight_step_down_async (manager->backlight, NULL, backlight_brightness_step_cb, invocation);
+
+        } else if (g_strcmp0 (method_name, "Cycle") == 0) {
+                g_debug ("screen cycle up");
+                gsd_backlight_cycle_up_async (manager->backlight, NULL, backlight_brightness_step_cb, invocation);
+
+        } else {
+                g_assert_not_reached ();
+        }
+}
+
+static void
+handle_method_call (GDBusConnection       *connection,
+                    const gchar           *sender,
+                    const gchar           *object_path,
+                    const gchar           *interface_name,
+                    const gchar           *method_name,
+                    GVariant              *parameters,
+                    GDBusMethodInvocation *invocation,
+                    gpointer               user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+
+        /* Check session pointer as a proxy for whether the manager is in the
+           start or stop state */
+        if (manager->session == NULL) {
+                return;
+        }
+
+        g_debug ("Calling method '%s.%s' for Power",
+                 interface_name, method_name);
+
+        if (g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_SCREEN) == 0) {
+                handle_method_call_screen (manager,
+                                           method_name,
+                                           parameters,
+                                           invocation);
+        } else if (g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_KEYBOARD) == 0) {
+                handle_method_call_keyboard (manager,
+                                             method_name,
+                                             parameters,
+                                             invocation);
+        } else {
+                g_warning ("not recognised interface: %s", interface_name);
+        }
+}
+
+static GVariant *
+handle_get_property_other (GsdPowerManager *manager,
+                           const gchar *interface_name,
+                           const gchar *property_name,
+                           GError **error)
+{
+        GVariant *retval = NULL;
+        gint32 value;
+
+        if (g_strcmp0 (property_name, "Brightness") != 0) {
+                g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
+                             "No such property: %s", property_name);
+                return NULL;
+        }
+
+        if (g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_SCREEN) == 0) {
+                if (manager->backlight)
+                        value = gsd_backlight_get_brightness (manager->backlight, NULL);
+                else
+                        value = -1;
+
+                retval = g_variant_new_int32 (value);
+        } else if (manager->upower_kbd_proxy &&
+                   g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_KEYBOARD) == 0) {
+                value = ABS_TO_PERCENTAGE (0,
+                                           manager->kbd_brightness_max,
+                                           manager->kbd_brightness_now);
+                retval =  g_variant_new_int32 (value);
+        }
+
+        if (retval == NULL) {
+                g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
+                             "Failed to get property %s on interface %s",
+                             property_name, interface_name);
+        }
+        return retval;
+}
+
+static GVariant *
+handle_get_property (GDBusConnection *connection,
+                     const gchar *sender,
+                     const gchar *object_path,
+                     const gchar *interface_name,
+                     const gchar *property_name,
+                     GError **error, gpointer user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+
+        /* Check session pointer as a proxy for whether the manager is in the
+           start or stop state */
+        if (manager->session == NULL) {
+                g_set_error_literal (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
+                                     "No session");
+                return NULL;
+        }
+
+        if (g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_SCREEN) == 0 ||
+                   g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_KEYBOARD) == 0) {
+                return handle_get_property_other (manager, interface_name, property_name, error);
+        } else {
+                g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
+                             "No such interface: %s", interface_name);
+                return NULL;
+        }
+}
+
+static gboolean
+handle_set_property_other (GsdPowerManager *manager,
+                           const gchar *interface_name,
+                           const gchar *property_name,
+                           GVariant *value,
+                           GError **error)
+{
+        gint32 brightness_value;
+
+        if (g_strcmp0 (property_name, "Brightness") != 0) {
+                g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
+                             "No such property: %s", property_name);
+                return FALSE;
+        }
+
+        if (g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_SCREEN) == 0) {
+                /* To do error reporting we would need to handle the Set call
+                 * instead of doing it through set_property.
+                 * But none of our DBus API users actually read the result. */
+                g_variant_get (value, "i", &brightness_value);
+                if (manager->backlight) {
+                        gsd_backlight_set_brightness_async (manager->backlight, brightness_value,
+                                                            NULL,
+                                                            backlight_brightness_set_cb, g_object_ref (manager));
+                        return TRUE;
+                } else {
+                        g_set_error_literal (error, GSD_POWER_MANAGER_ERROR, GSD_POWER_MANAGER_ERROR_NO_BACKLIGHT,
+                                             "No usable backlight could be found!");
+                        return FALSE;
+                }
+
+        } else if (g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_KEYBOARD) == 0) {
+                g_variant_get (value, "i", &brightness_value);
+                brightness_value = PERCENTAGE_TO_ABS (0, manager->kbd_brightness_max,
+                                                      brightness_value);
+                if (upower_kbd_set_brightness (manager, brightness_value, error)) {
+                        brightness_value = ABS_TO_PERCENTAGE (0,
+                                                              manager->kbd_brightness_max,
+                                                              manager->kbd_brightness_now);
+                        backlight_iface_emit_changed (manager, GSD_POWER_DBUS_INTERFACE_KEYBOARD, brightness_value, "set property");
+                        return TRUE;
+                } else {
+                        return FALSE;
+                }
+        }
+
+        g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
+                     "No such interface: %s", interface_name);
+        return FALSE;
+}
+
+static gboolean
+handle_set_property (GDBusConnection *connection,
+                     const gchar *sender,
+                     const gchar *object_path,
+                     const gchar *interface_name,
+                     const gchar *property_name,
+                     GVariant *value,
+                     GError **error, gpointer user_data)
+{
+        GsdPowerManager *manager = GSD_POWER_MANAGER (user_data);
+
+        /* Check session pointer as a proxy for whether the manager is in the
+           start or stop state */
+        if (manager->session == NULL) {
+                g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
+                             "Manager is starting or stopping");
+                return FALSE;
+        }
+
+        if (g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_SCREEN) == 0 ||
+            g_strcmp0 (interface_name, GSD_POWER_DBUS_INTERFACE_KEYBOARD) == 0) {
+                return handle_set_property_other (manager, interface_name, property_name, value, error);
+        } else {
+                g_set_error (error, G_DBUS_ERROR, G_DBUS_ERROR_FAILED,
+                             "No such interface: %s", interface_name);
+                return FALSE;
+        }
+}
+
+static const GDBusInterfaceVTable interface_vtable =
+{
+        handle_method_call,
+        handle_get_property,
+        handle_set_property
+};
+
+static void
+on_bus_gotten (GObject             *source_object,
+               GAsyncResult        *res,
+               GsdPowerManager     *manager)
+{
+        GDBusConnection *connection;
+        GDBusInterfaceInfo **infos;
+        GError *error = NULL;
+        guint i;
+
+        connection = g_bus_get_finish (res, &error);
+        if (connection == NULL) {
+                if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
+                        g_warning ("Could not get session bus: %s", error->message);
+                g_error_free (error);
+                return;
+        }
+
+        manager->connection = connection;
+
+        infos = manager->introspection_data->interfaces;
+        for (i = 0; infos[i] != NULL; i++) {
+                g_dbus_connection_register_object (connection,
+                                                   GSD_POWER_DBUS_PATH,
+                                                   infos[i],
+                                                   &interface_vtable,
+                                                   manager,
+                                                   NULL,
+                                                   NULL);
+        }
+
+        manager->name_id = g_bus_own_name_on_connection (connection,
+                                                               GSD_POWER_DBUS_NAME,
+                                                               G_BUS_NAME_OWNER_FLAGS_NONE,
+                                                               NULL,
+                                                               NULL,
+                                                               NULL,
+                                                               NULL);
+}
+
+static void
+register_manager_dbus (GsdPowerManager *manager)
+{
+        manager->introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL);
+        g_assert (manager->introspection_data != NULL);
+
+        g_bus_get (G_BUS_TYPE_SESSION,
+                   manager->cancellable,
+                   (GAsyncReadyCallback) on_bus_gotten,
+                   manager);
+}
+
+GsdPowerManager *
+gsd_power_manager_new (void)
+{
+        if (manager_object != NULL) {
+                g_object_ref (manager_object);
+        } else {
+                manager_object = g_object_new (GSD_TYPE_POWER_MANAGER, NULL);
+                g_object_add_weak_pointer (manager_object,
+                                           (gpointer *) &manager_object);
+                register_manager_dbus (manager_object);
+        }
+        return GSD_POWER_MANAGER (manager_object);
+}