Bug#620138: xserver-xorg-video-nouveau: Frozen graphics (mouse still moves)
On 2011-03-30 15:40 +0200, Helge Hafting wrote:
> This particular version of nouveau has a partial freeze problem.
> It seems to happen randomly when switching virtual desktops in icewm,
> and when changing screen sizes with xrandr.
>
> The mouse still moves the pointer, but the image is otherwise frozen.
> Nothing can be updated on screen, and the mouse pointer does not
> change as it should when moved onto a window edge. Typing or
> clicking gives no response.
Looks like your GPU is hung. But there's some hope, since…
> The freeze is only partial - alt+sysrq sequences can be used to sync
> and remount read-only - and boot. Pressing the power button
> runs a normal shutdown (i.e. lots of disk activity for some time,
> and then the machine powers down. The display does not change,
> so no visual indication that the X server stops.
…it should be possible to ssh into the machine and access the kernel
logs. Did you see anything interesting in /var/log/kern.log or
/var/log/Xorg.0.log.old?
If you cannot ssh into the machine, try some other method to capture
kernel logs, see http://nouveau.freedesktop.org/wiki/HangDiagnosis.
Regards,
Sven
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