Comment 382 for bug 1140716

(In reply to comment #104)
> After playing hedgewars for about half an hour, the gpu started to hang.
> dmesg output:
> [ 3442.907459] [drm:i915_hangcheck_elapsed] *ERROR* stuck on render ring
> [ 3442.907471] [drm] capturing error event; look for more information in
> /sys/kernel/debug/dri/0/i915_error_state
> [ 3442.916792] [drm:i915_set_reset_status] *ERROR* render ring hung inside
> bo (0x5e52000 ctx 1) at 0x5e52220
> [ 3466.911077] [drm:i915_hangcheck_elapsed] *ERROR* stuck on render ring
> [ 3466.911087] [drm:i915_hangcheck_elapsed] *ERROR* stuck on blitter ring
> [ 3466.947069] [drm:__gen6_gt_force_wake_get] *ERROR* Timed out waiting for
> forcewake old ack to clear.
> I'm not sure my problem is related to this bug.

My laptop is Thinkpad T420 with i5-2520M. The BIOS version is 1.44.