Created attachment 53683 [details] i915_error_state triggered by gtkperf I got 100% repeatable problem with 2.17.0 and sna when running with xcompmgr as composite manager. The GPU hung occurs just after gtkperf GtkDrawingArea benchmark is started: kernel (3.1.1) [ 2250.845017] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung [ 2250.845024] [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state [ 2251.349017] [drm:i915_reset] *ERROR* Failed to reset chip. Xorg.0.log (xserver 1.11.2): [ 2250.845] (EE) intel(0): Detected a hung GPU, disabling acceleration. [ 2250.845] (EE) intel(0): When reporting this, please include i915_error_state from debugfs and the full dmesg. The xserver survives the hung, gtkperf started once again finishes the run without problems. libraries: mesa 7.11.1 drm 2.4.27 pixman 0.24.0
I've been hitting this hang as well on gen4. Haven't managed to isolate the cause, my second worst fear is the shader bug biting harder as there is nothing obvious in there. *** This bug has been marked as a duplicate of bug 42885 ***
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