On Tue, 20 Apr 2010 11:10:29 +0200, Åukasz MaÅko <[email protected]> wrote: > Today I got my Xorg display (under KDE) frozen. Keyboard and mouse were > responding, but nothing was changing on the display (but mouse pointer, > which moved). What was interesting, was a message in the console: > > (EE) intel(0): Failed to submit batch buffer, expect rendering corruption or > even a frozen display: Input/output error. > intel_bufmgr_gem.c:1060: Error setting domain 11869: Input/output error > > In the same time, in syslog I got this: > > Apr 20 08:37:10 laptok kernel: : [drm:i915_hangcheck_elapsed] *ERROR* > Hangcheck timer elapsed... GPU hung > Apr 20 08:37:10 laptok kernel: : render error detected, EIR: 0x00000000 > Apr 20 08:37:10 laptok kernel: : [drm:i915_do_wait_request] *ERROR* > i915_do_wait_request returns -5 (awaiting 2935568 at 2935567) > > What may be the reason my laptop behaved like this? Usually my machine is > rock steady. I'm using intel driver 2.11.0, kernel 2.6.33.2 and xserver > 1.7.6 (with 1.8.0 xrandr is not working). My graphics chip is Intel i945GM.
The kernel detected a GPU hang, usually triggered by the userspace driver ordering the GPU to perform an undefined operation. With a more recent kernel, 2.6.34-rc1 or later, /sys/kernel/debug/dri/0/i915_error_state will contain the erroneous batch buffer and hopefully sufficient information to identify the cause. With your current kernel, there is a slim chance that intel_gpu_dump will be able to grab the illegal batch buffer, but usually it just contains noise post-hangcheck. Please update your kernel and if it reoccurs, file a bug, including i915_error_state. -ickle -- Chris Wilson, Intel Open Source Technology Centre
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