On stock 3.6.5 at boot+403586.244s, I hit this: [drm:i915_hangcheck_hung] *ERROR* Hangcheck timer elapsed... GPU hung [drm] capturing error event; look for more information in /debug/dri/0/i915_error_state At boot+403596.318s, I see in Xorg.0.log: [mi] Increasing EQ size to 512 to prevent dropped events. [mi] EQ processing has resumed after 269 dropped events. [mi] This may be caused my a misbehaving driver monopolizing the server's resources. (WW) intel(0): I830DRI2GetMSC:1361 get vblank counter failed: Invalid argument This was preceded a while before by: (EE) [mi] EQ overflowing. Additional events will be discarded until existing events are processed. (EE) (EE) Backtrace: (EE) 0: /usr/bin/X (xorg_backtrace+0x36) [0x7ffa49022ac6] (EE) 1: /usr/bin/X (mieqEnqueue+0x26b) [0x7ffa49003eab] (EE) 2: /usr/bin/X (0x7ffa48e7a000+0x6a492) [0x7ffa48ee4492] (EE) 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7ffa43d7d000+0x5f34) [0x7ffa43d82f34] (EE) 4: /usr/bin/X (0x7ffa48e7a000+0x936c7) [0x7ffa48f0d6c7] (EE) 5: /usr/bin/X (0x7ffa48e7a000+0xbce38) [0x7ffa48f36e38] (EE) 6: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7ffa481a0000+0xfcb0) [0x7ffa481afcb0] (EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (ioctl+0x7) [0x7ffa46ef0527] (EE) 8: /usr/lib/x86_64-linux-gnu/libdrm.so.2 (drmIoctl+0x28) [0x7ffa47f97328] (EE) 9: /usr/lib/x86_64-linux-gnu/libdrm_intel.so.1 (0x7ffa45970000+0x6af0) [0x7ffa45976af0] (EE) 10: /usr/lib/x86_64-linux-gnu/libdrm_intel.so.1 (0x7ffa45970000+0x72be) [0x7ffa459772be] (EE) 11: /usr/lib/xorg/modules/drivers/intel_drv.so (0x7ffa45b90000+0x18194) [0x7ffa45ba8194] (EE) 12: /usr/bin/X (0x7ffa48e7a000+0x5130f) [0x7ffa48ecb30f] (EE) 13: /usr/bin/X (0x7ffa48e7a000+0x55a51) [0x7ffa48ecfa51] (EE) 14: /usr/bin/X (0x7ffa48e7a000+0x4456a) [0x7ffa48ebe56a] (EE) 15: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7ffa46e2576d] (EE) 16: /usr/bin/X (0x7ffa48e7a000+0x448ad) [0x7ffa48ebe8ad] (EE) (EE) [mi] These backtraces from mieqEnqueue may point to a culprit higher up the stack. (EE) [mi] mieq is *NOT* the cause. It is a victim. (EE) [mi] EQ overflow continuing. 100 events have been dropped. Have you guys seen this before? Hardware is SNB; just in GNOME3 UI with terminals, text editors, PDFs, mail and firefox. Full logs are at: http://quora.org/2012/i915/i915_error_state http://quora.org/2012/i915/dmesg http://quora.org/2012/i915/Xorg.0.log Box is still booted, but X restarted in case further detail in /sys/kernel/debug/i915 is useful... Thanks, Daniel -- Daniel J Blueman
