Since the behavior exhibits itself in gnome classic without effects, and
since turning -vga std on works around the issue, it is sounding
unlikely to be mesa, and more likely to be the video driver itself
(-cirrus, or potentially the kernel).
Does booting the quantal kernel in the raring vm (without using the -vga
std workaround) also work around the problem?
** Changed in: mesa (Ubuntu)
Status: New => Invalid
** Changed in: xserver-xorg-video-cirrus (Ubuntu)
Status: New => Incomplete
** Package changed: mesa (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: Invalid => Incomplete
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https://bugs.launchpad.net/bugs/1080674
Title:
[QEMU] Corrupted desktop screen for raring desktop installation in
QEMU guest (Cirrus graphics)
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