Public bug reported:
On my HP Nc6400, I noticed that on resume from suspend > 5mins, the X server
would freeze, and only a 'kill -9 X' via ssh could restore things. Shorter
suspends didn't give any problem.
Looking further into it, It turns out that this problem only occurs when
an OpenGL app is running on resume, which turned out to be the
screensaver. Setting the screensaver to just blank would alleviate this
problem. I then tried suspending with a GL app running at the time, then
got the same problem.
This is the video card:
00:02.0 VGA compatible controller: Intel Corporation Mobile
945GM/GMS/940GML Express Integrated Graphics Controller (rev 03)
Running i810 driver version 1.6.5-0ubuntu3
My suspend script does this for the video:
videomode=`vbetool vbemode get`
vbetool vbestate save > $tmpfile
cat /proc/bus/pci/00/02.0 > /tmp/video_state
echo mem > /sys/power/state
cat /tmp/video_state > /proc/bus/pci/00/02.0
vbetool vbestate restore < $tmpfile
vbetool vbemode set $videomode
(The pci stuff is there otherwise resume crashes the X server.)
** Affects: xserver-xorg-video-i810 (Ubuntu)
Importance: Untriaged
Status: Unconfirmed
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i945GM + opengl crashes on resume
https://launchpad.net/bugs/56784
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