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Ubuntu 20.04 host and Windows 10/11 guest: The virtual machine crashes when the screen resizes.

Virtual machines running on Windows 10 and Windows 11 experiencing screen scaling issues

/home/anurag/vBoxVms/win11pro/Logs

00:01:10.428264 GUI: UIMultiScreenLayout::update: GUI/AutomountGuestScreens is disabled

00:01:10.478469 GUI: UIMachineViewFullscreen::adjustGuestScreenSize: Desired hint 1920x1080 for guest-screen #0 differs from the one in IDisplay, adjustment is required.

00:01:10.478600 GUI: UIMachineView::sltPerformGuestResize: Sending guest size-hint to screen 0 as 1920x1080

00:01:10.478617 VMMDev: SetVideoModeHint: Got a video mode hint (1920x1080x32)@(0x0),(1;0) at 0

00:01:10.478775 VMMDev: Guest Log: Got multi resize request 1 displays

00:01:10.480086 VMMDev: Guest Log: [0]: 0 0x39 0,0 1920x1080 32

00:01:10.503163 Display::i_handleDisplayResize: uScreenId=0 pvVRAM=00007fd87c000000 w=1920 h=1080 bpp=32 cbLine=0x1E00 flags=0x1 origin=0,0

00:01:10.510166 QDBus inhibition call error for service org.gnome.SettingsDaemon.ScreensaverProxy: org.gtk.GDBus.UnmappedGError.Quark._g_2dio_2derror_2dquark.Code36. GDBus.Error:org.gnome.SessionManager.GeneralError: Unable to uninhibit: Invalid cookie

00:01:10.511668 QDBus inhibition call error for service org.gnome.SettingsDaemon.ScreensaverProxy: org.gtk.GDBus.UnmappedGError.Quark._g_2dio_2derror_2dquark.Code36. GDBus.Error:org.gnome.SessionManager.GeneralError: Unable to uninhibit: Invalid cookie

00:01:10.512891 QDBus inhibition call error for service org.freedesktop.ScreenSaver: org.gtk.GDBus.UnmappedGError.Quark._g_2dio_2derror_2dquark.Code36. GDBus.Error:org.gnome.SessionManager.GeneralError: Unable to uninhibit: Invalid cookie

00:01:10.514477 QDBus inhibition call error for service org.freedesktop.ScreenSaver: org.gtk.GDBus.UnmappedGError.Quark._g_2dio_2derror_2dquark.Code36. GDBus.Error:org.gnome.SessionManager.GeneralError: Unable to uninhibit: Invalid cookie

00:01:10.590820 GUI: Show mini-toolbar for window #0

00:01:10.706894 GUI: Adjust mini-toolbar for window #0

00:01:10.707174 GUI:  Resize mini-toolbar for window #0 to 1920x1080

00:01:10.707432 GUI:  Move mini-toolbar for window #0 to 0x0

00:01:10.787106 GUI: UIMediumEnumerator: Medium-enumeration finished!

Solution:

anurag@TPE14:~$ sudo apt update

anurag@TPE14:~$ sudo apt install --reinstall gnome-shell ubuntu-gnome-desktop

anurag@TPE14:~/vBoxVms/win11pro/Logs$ sudo su - root