"Me too", also with a GX260. dmesg shows streams of errors such as:
[97544.908019] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed...
GPU hung
[97544.908032] render error detected, EIR: 0x00000000
[97544.908056] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns
-5 (awaiting 6540 at 6213)
when this happens. I think this is why the "Failed to submit batchbuffer:
Input/output error" occurs within XOrg, the GPU indeed is hung. I have ssh on
this box and can verify that other than XOrg going into a restart loop and
burning a few CPU cycles (until I run sudo /etc/init.d/gdm stop) everything
else is unaffected. If anyone has a patch to try, I have a head on this box
but mostly treat it as headless, so I'm in a good position to try out patches.
--
Xorg crash
https://bugs.launchpad.net/bugs/566324
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