I'm confirming the problem still exists with Maverick x64 kernel
2.6.35-22 running KDE4. System is Thinkpad T400 using Intel 4500.
Sometimes a hard reset is the only way, sometimes I was able to switch
to a VT and get those message around (but not exactly) every second
(based on the timestamps):
[4200.123456] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed...
GPU hung
[4200.789012] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns
-5 (awaiting 264334 at 263373)
The number "263373" stays constant, while the number before it
("264334") increments by 2 everytime a message is printed.
Most of the time this happen when some desktop effect is used. I also
noticed that most of the time the effect was "Present Windows", which is
also buggy (i.e. window thumbnails disappear after around a second)
--
[i855] GPU hung (drm i915 intel) on Lucid Lynx
https://bugs.launchpad.net/bugs/528467
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