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[Launchpad Bug Tracker <769926@xxxxxxxxxxxxxxxxxx>]

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I am using Ubuntu 11.04, with all the packages updated. First version I
installed is beta 2 and I am still experiencing some crashes of compiz
that I wasn't able to figure out till now. Now I think the problem is in
the intel driver. Actually I don't know how to reproduce the bug, but
usually if I leave my computer on for some time without doing anything
(e.g. with the screensaver running) later I have an X server that does
not respond anymore until I kill explicitly compiz.

Those are some messages I found in /var/log/kern.log:

Apr 24 16:22:06 barnabo kernel: [16661.970091] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
Apr 24 16:22:06 barnabo kernel: [16661.970897] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -11 (awaiting 798726 at 798714, next 798727)
Apr 24 16:22:07 barnabo kernel: [16662.480045] [drm:i915_reset] *ERROR* Failed to reset chip.
Apr 24 16:22:07 barnabo kernel: [16662.497717] compiz[3766]: segfault at 0 ip 00007f6a0e3e89a9 sp 00007fffc063b2c8 error 6 in libc-2.13.so[7f6a0e35e000+18a000]
Apr 24 16:22:08 barnabo kernel: [16663.796983] compiz[3931]: segfault at 0 ip 00007fbfbd1a3bb7 sp 00007fff51febf50 error 6 in i965_dri.so[7fbfbd184000+ac000]
Apr 24 16:22:09 barnabo kernel: [16664.975663] compiz[3937]: segfault at 0 ip 00007f7ffae91bb7 sp 00007fffaf32b5a0 error 6 in i965_dri.so[7f7ffae72000+ac000]
Apr 24 16:22:10 barnabo kernel: [16666.175886] compiz[3939]: segfault at 0 ip 00007fba9ed62bb7 sp 00007fffd92b57d0 error 6 in i965_dri.so[7fba9ed43000+ac000]
Apr 24 16:22:11 barnabo kernel: [16667.333628] compiz[3941]: segfault at 0 ip 00007fcb68353bb7 sp 00007fff5adb1ef0 error 6 in i965_dri.so[7fcb68334000+ac000]
Apr 24 16:22:13 barnabo kernel: [16668.553140] compiz[3943]: segfault at 0 ip 00007fd95fb01bb7 sp 00007fffb720efd0 error 6 in i965_dri.so[7fd95fae2000+ac000]
Apr 24 16:22:14 barnabo kernel: [16669.729482] compiz[3945]: segfault at 0 ip 00007f067b4a2bb7 sp 00007fff2ca9b170 error 6 in i965_dri.so[7f067b483000+ac000]
Apr 24 16:22:15 barnabo kernel: [16670.891923] compiz[3947]: segfault at 0 ip 00007f4a1cca9bb7 sp 00007fff46252c10 error 6 in i965_dri.so[7f4a1cc8a000+ac000]
Apr 24 16:22:16 barnabo kernel: [16672.062247] compiz[3949]: segfault at 0 ip 00007f31074ccbb7 sp 00007fff022892d0 error 6 in i965_dri.so[7f31074ad000+ac000]
Apr 24 16:22:17 barnabo kernel: [16673.237330] compiz[3951]: segfault at 0 ip 00007f4b3e83bbb7 sp 00007ffffa59ad00 error 6 in i965_dri.so[7f4b3e81c000+ac000]
Apr 24 16:22:18 barnabo kernel: [16674.386018] compiz[3953]: segfault at 0 ip 00007f70fa3e4bb7 sp 00007fff0fa86a90 error 6 in i965_dri.so[7f70fa3c5000+ac000]
Apr 24 16:22:20 barnabo kernel: [16675.562273] compiz[3956]: segfault at 0 ip 00007f2d5101abb7 sp 00007fff1fc24d70 error 6 in i965_dri.so[7f2d50ffb000+ac000]
Apr 24 16:22:21 barnabo kernel: [16676.720942] compiz[3958]: segfault at 0 ip 00007f7b45f88bb7 sp 00007fff32aeb0d0 error 6 in i965_dri.so[7f7b45f69000+ac000]
Apr 24 16:22:22 barnabo kernel: [16677.881148] compiz[3960]: segfault at 0 ip 00007f4edf8e4bb7 sp 00007fff40bafbb0 error 6 in i965_dri.so[7f4edf8c5000+ac000]
Apr 24 16:22:23 barnabo kernel: [16679.052497] compiz[3962]: segfault at 0 ip 00007f580ab58bb7 sp 00007fff55ecc910 error 6 in i965_dri.so[7f580ab39000+ac000]
Apr 24 16:22:24 barnabo kernel: [16680.230814] compiz[3964]: segfault at 0 ip 00007f52ff95bbb7 sp 00007fff28e2d180 error 6 in i965_dri.so[7f52ff93c000+ac000]
Apr 24 16:22:25 barnabo kernel: [16681.385202] compiz[3966]: segfault at 0 ip 00007f7229325bb7 sp 00007fffe843fcc0 error 6 in i965_dri.so[7f7229306000+ac000]
Apr 24 16:22:27 barnabo kernel: [16682.514461] compiz[3968]: segfault at 0 ip 00007f15aec61bb7 sp 00007fff0814cc20 error 6 in i965_dri.so[7f15aec42000+ac000]
Apr 24 16:22:28 barnabo kernel: [16683.673543] compiz[3970]: segfault at 0 ip 00007fec0931dbb7 sp 00007fffc777dd60 error 6 in i965_dri.so[7fec092fe000+ac000]

And so on.

Kernel is 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
Compiz is 1:0.9.4+bzr20110415-0ubuntu2
Intel driver is 2:2.14.0-4ubuntu7

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Compiz crash: [drm:i915_hangcheck_elapsed]
https://bugs.launchpad.net/bugs/769926
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