Created attachment 85159 [details]
i915_error_state after GPU hang
Lenovo ThinkPad X220.
00:02.0 VGA compatible controller : Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09)
Running Linux 3.10.7 from the Debian linux-image-3.10-2-amd64 package, version 3.10.7-1.
Running X server 1.12.4 (xserver-xorg-core 2:1.12.4-6.2+b2), and version 2.21.15 of the Intel driver (xserver-xorg-video-intel 2:2.21.15-1).
Hit several GPU hangs:
[ 2738.269904] [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung
[ 2738.269910] [drm] capturing error event; look for more information in /sys/kernel/debug/dri/0/i915_error_state
[ 2738.279235] [drm:kick_ring] *ERROR* Kicking stuck semaphore on render ring
*** This bug has been marked as a duplicate of bug 54226 ***