Bug 15045

Summary:	[i945] i915: ERROR Execbuf while wedged
Product:	Drivers	Reporter:	Johannes Engel (jcnengel)
Component:	Video(DRI - Intel)	Assignee:	drivers_video-dri-intel (drivers_video-dri-intel)
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	colin, tmezzadra
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.32.3	Subsystem:
Regression:	Yes	Bisected commit-id:

Description Johannes Engel 2010-01-11 11:08:39 UTC

X Server lockups happen every now and then with the dmesg output:

[  614.220903] [drm:i915_gem_execbuffer] *ERROR* Execbuf while wedged
[  614.432038] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
[  614.432058] render error detected, EIR: 0x00000000
[  614.432068] i915: Waking up sleeping processes
[  614.432125] reboot required

I can still move the mouse, switch to console works, but even restarting X leaves the screen black.
Manually "unwedging" does not help.
Referring to #14627, CONFIG_DMAR is disabled.

To me this seems to be related to Archlinux bug 17705: http://bugs.archlinux.org/task/17705

Hardware: intel 945GM

Comment 1 Colin Guthrie 2010-01-11 11:52:14 UTC

Probably a dupe of bug #15004 (but thanks for CC'ing me Johannes :))

Comment 2 Johannes Engel 2010-01-11 12:25:50 UTC

Thanks for the hint, Colin. As Tom did not comment in the other bug, I assumed there was none yet.

*** This bug has been marked as a duplicate of bug 15004 ***