diff options
Diffstat (limited to '')
| -rw-r--r-- | debian/patches/quick-boot-lvm.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/debian/patches/quick-boot-lvm.patch b/debian/patches/quick-boot-lvm.patch new file mode 100644 index 0000000..6f3ac2d --- /dev/null +++ b/debian/patches/quick-boot-lvm.patch @@ -0,0 +1,77 @@ +From 4f5e080c61055b04db3cdf8067cf180f193cf89f Mon Sep 17 00:00:00 2001 +From: Steve Langasek <steve.langasek@ubuntu.com> +Date: Tue, 30 Oct 2018 15:04:16 -0700 +Subject: If we don't have writable grubenv and we're on EFI, always show the + menu + +If we don't have writable grubenv, recordfail doesn't work, which means our +quickboot behavior - with a timeout of 0 - leaves the user without a +reliable way to access the boot menu if they're on UEFI, because unlike +BIOS, UEFI does not support checking the state of modifier keys (i.e. +holding down shift at boot is not detectable). + +Handle this corner case by always using a non-zero timeout on EFI when +save_env doesn't work. + +Reuse GRUB_RECORDFAIL_TIMEOUT to avoid introducing another variable. + +Signed-off-by: Steve Langasek <steve.langasek@canonical.com> + +Bug-Ubuntu: https://bugs.launchpad.net/bugs/1800722 +Last-Update: 2019-06-24 + +Patch-Name: quick-boot-lvm.patch +--- + util/grub.d/00_header.in | 18 +++++++++++++++--- + 1 file changed, 15 insertions(+), 3 deletions(-) + +diff --git a/util/grub.d/00_header.in b/util/grub.d/00_header.in +index 674a76140..b7135b655 100644 +--- a/util/grub.d/00_header.in ++++ b/util/grub.d/00_header.in +@@ -115,7 +115,7 @@ EOF + cat <<EOF + # GRUB lacks write support for $abstraction, so recordfail support is disabled. + EOF +- return ++ return 1 + ;; + esac + done +@@ -126,7 +126,7 @@ EOF + cat <<EOF + # GRUB lacks write support for $FS, so recordfail support is disabled. + EOF +- return ++ return 1 + ;; + esac + +@@ -135,7 +135,9 @@ EOF + EOF + } + +- check_writable ++ if ! check_writable; then ++ recordfail_broken=1 ++ fi + + cat <<EOF + } +@@ -379,6 +381,16 @@ EOF + fi + fi + EOF ++if [ "$recordfail_broken" = 1 ]; then ++ cat << EOF ++if [ \$grub_platform = efi ]; then ++ set timeout=${GRUB_RECORDFAIL_TIMEOUT:-30} ++ if [ x\$feature_timeout_style = xy ] ; then ++ set timeout_style=menu ++ fi ++fi ++EOF ++fi + } + + if [ "x$GRUB_BUTTON_CMOS_ADDRESS" != "x" ]; then |