From 16f504a9dca3fe3b70568f67b7d41241ae485288 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:49:04 +0200 Subject: Adding upstream version 7.0.6-dfsg. Signed-off-by: Daniel Baumann --- doc/manual/en_US/user_KnownIssues.xml | 502 ++++++++++++++++++++++++++++++++++ 1 file changed, 502 insertions(+) create mode 100644 doc/manual/en_US/user_KnownIssues.xml (limited to 'doc/manual/en_US/user_KnownIssues.xml') diff --git a/doc/manual/en_US/user_KnownIssues.xml b/doc/manual/en_US/user_KnownIssues.xml new file mode 100644 index 00000000..f54c03bd --- /dev/null +++ b/doc/manual/en_US/user_KnownIssues.xml @@ -0,0 +1,502 @@ + + + +%all.entities; +]> + + + Known Limitations + + + + Experimental Features + + + Some &product-name; features are labeled as experimental. Such + features are provided on an "as-is" basis and are not formally + supported. However, feedback and suggestions about such features + are welcome. A comprehensive list of experimental features is as + follows: + + + + + + + Hardware 3D acceleration support for Windows, Linux, and + Oracle Solaris guests + + + + + + Hardware 2D video playback acceleration support for Windows + guests + + + + + + + + Mac OS X guests (macOS hosts only) + + + + + + ICH9 chipset emulation + + + + + + EFI firmware + + + + + + Host CD/DVD drive passthrough + + + + + + Support of iSCSI using internal networking + + + + + + Using &product-name; and Hyper-V on the same host + + + + + + + + + + Known Issues + + + The following section describes known problems with this release + of &product-name;. Unless marked otherwise, these issues are + planned to be fixed in later releases. + + + + + + + The macOS installer packages for &product-name; 7 currently do + not include the Internal Networking feature, which is + available on all other platforms. This will be addressed with + an update of &product-name; 7. For setups which depend on this + functionality it is best to keep using &product-name; 6.1. + + + + + + Poor performance when using &product-name; and + Hyper-V on the same host. To + fix this, certain Windows features like "Hyper-V Platform", + "Virtual Machine Platform" and "Windows Hypervisor Platform" + must be turned off, followed by a host reboot. + + + + Additionally, the Microsoft Device Guard and Credential Guard + hardware readiness tool might have to be used in order to turn + off more features. For example, by running the following + command: + + +.\DG_Readiness_Tool_vX.X.ps1 -Disable -AutoReboot + + + + Disabling Device Guard and Credential Guard features will + have an impact on the overall security of the host. Please + contact your Administrator beforehand regarding this. + + + + + + + The following Guest SMP (multiprocessor) + limitations exist: + + + + + + + Poor performance with + 32-bit guests on AMD CPUs. This affects mainly Windows and + Oracle Solaris guests, but possibly also some Linux kernel + revisions. Partially solved for 32-bit Windows NT, 2000, + XP, and 2003 guests. Requires the Guest Additions to be + installed. + + + + + + Poor performance with + 32-bit guests on certain Intel CPU models that do not + include virtual APIC hardware optimization support. This + affects mainly Windows and Oracle Solaris guests, but + possibly also some Linux kernel revisions. Partially + solved for 32-bit Windows NT, 2000, XP, and 2003 guests. + Requires the Guest Additions to be installed. + + + + + + + + + NX (no execute, data execution + prevention) only works for guests running on 64-bit + hosts and requires that hardware virtualization be enabled. + + + + + + Guest control. On Windows + guests, a process started using the guest control execute + support will not be able to display a graphical user interface + unless the user account under which it is + running is currently logged in and has a desktop session. + + + + Also, to use accounts without or with an empty password, the + guest's group policy must be changed. To do so, open the group + policy editor on the command line by typing + gpedit.msc, open the key Computer + Configuration\Windows Settings\Security Settings\Local + Policies\Security Options and change the value of + Accounts: Limit local account use of blank passwords + to console logon only to Disabled. + + + + + + Compacting virtual disk images is + limited to VDI files. The VBoxManage + modifymedium --compact command is currently only + implemented for VDI files. At the moment the only way to + optimize the size of a virtual disk images in other formats, + such as VMDK or VHD, is to clone the image and then use the + cloned image in the VM configuration. + + + + + + OVF import/export: + + + + + + + OVF localization, with multiple languages in a single OVF + file, is not yet supported. + + + + + + Some OVF sections like StartupSection, + DeploymentOptionSection, and InstallSection are ignored. + + + + + + OVF environment documents, including their property + sections and appliance configuration with ISO images, are + not yet supported. + + + + + + Remote files using HTTP or other mechanisms are not yet + supported. + + + + + + + + + Neither scale mode nor + seamless mode work correctly + with guests using OpenGL 3D features, such as with + Compiz-enabled window managers. + + + + + + The RDP server in the &product-name; extension pack supports + only audio streams in format 22.05kHz stereo 16-bit. If the + RDP client requests any other audio format there will be no + audio. + + + + + + Preserving the aspect ratio in scale mode works only on + Windows hosts and on macOS hosts. + + + + + + On macOS hosts, the following + features are not yet implemented: + + + + + + + Numlock emulation + + + + + + CPU frequency metric + + + + + + Memory ballooning + + + + + + + + + macOS/ARM64 (Apple silicon) host + package + + + + + + Mac OS X guests: + + + + + + + Mac OS X guests can only run on a certain host hardware. + For details about license and host hardware limitations. + See and check the + Apple software license conditions. + + + + + + &product-name; does not provide Guest Additions for Mac OS + X at this time. + + + + + + The graphics resolution currently defaults to 1024x768 as + Mac OS X falls back to the built-in EFI display support. + See for more information on + how to change EFI video modes. + + + + + + Mac OS X guests only work with one CPU assigned to the VM. + Support for SMP will be provided in a future release. + + + + + + Depending on your system and version of Mac OS X, you + might experience guest hangs after some time. This can be + fixed by turning off energy saving. Set the timeout to + "Never" in the system preferences. + + + + + + By default, the &product-name; EFI enables debug output of + the Mac OS X kernel to help you diagnose boot problems. + Note that there is a lot of output and not all errors are + fatal. They would also show when using a physical Apple + Macintosh computer. You can turn off these messages by + using the following command: + + +$ VBoxManage setextradata VM-name "VBoxInternal2/EfiBootArgs" " " + + + To revert to the previous behavior, use the following + command: + + +$ VBoxManage setextradata VM-name "VBoxInternal2/EfiBootArgs" "" + + + + + It is currently not possible to start a Mac OS X guest in + safe mode by specifying the option in + VBoxInternal2/EfiBootArgs extradata. + + + + + + + + + Oracle Solaris hosts: + + + + + + + USB support on Oracle Solaris hosts requires Oracle + Solaris 11 version snv_124 or later. Webcams and other + isochronous devices are known to have poor performance. + + + + + + Host Webcam passthrough is restricted to 640x480 frames at + 20 frames per second due to limitations in the Oracle + Solaris V4L2 API. This may be addressed in a future Oracle + Solaris release. + + + + + + No ACPI information, such as battery status or power + source, is reported to the guest. + + + + + + No support for using wireless adapters with bridged + networking. + + + + + + Crossbow-based bridged networking on Oracle Solaris 11 + hosts does not work directly with aggregate links. + However, you can use dladm to manually + create a VNIC over the aggregate link and use that with a + VM. This limitation does not exist in Oracle Solaris 11u1 + build 17 and later. + + + + + + + + + Neither virtio nor Intel PRO/1000 drivers for + Windows XP guests support + segmentation offloading. Therefore Windows XP guests have + slower transmission rates comparing to other guest types. + Refer to MS Knowledge base article 842264 for additional + information. + + + + + + Guest Additions for OS/2. + Seamless windows and automatic guest resizing will probably + never be implemented due to inherent limitations of the OS/2 + graphics system. + + + + + + Some guest operating systems predating ATAPI CD-ROMs may + exhibit long delays or entirely fail to boot in certain + configurations. This is most likely to happen when an + IDE/ATAPI CD-ROM exists alone on a primary or secondary IDE + channel. + + + + Affected operating systems are MS OS/2 1.21: fails to boot + with an error message referencing COUNTRY.SYS and MS OS/2 1.3: + long boot delays. To avoid such problems, disable the emulated + IDE/ATAPI CD-ROM. The guest OS cannot use this device, anyway. + + + + + + + + -- cgit v1.2.3