[Bug 507504] Re: display freezes, [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung

[Jury]

*** This bug is a duplicate of bug 528467 ***
    https://bugs.launchpad.net/bugs/528467

I have reproduced the problem since 8.10
Today on 10.04
HW: IBM ThinkPad Z60t
X server crashes and then restarts into "recovery" mode

syslog:
May  3 23:12:46 thinkpad kernel: [34494.224038] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
May  3 23:12:46 thinkpad kernel: [34494.224054] render error detected, EIR: 0x00000000
May  3 23:12:46 thinkpad kernel: [34494.225204] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 5606169 at 5606145)
May  3 23:12:47 thinkpad gnome-session[1395]: WARNING: Detected that screensaver has left the bus
May  3 23:12:47 thinkpad pulseaudio[10049]: pid.c: Stale PID file, overwriting.
May  3 23:12:48 thinkpad pulseaudio[10049]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-LdQ8I
May  3 23:12:48 thinkpad acpid: client 900[0:0] has disconnected
May  3 23:12:48 thinkpad acpid: client connected from 10056[0:0]
May  3 23:12:48 thinkpad acpid: 1 client rule loaded
May  3 23:12:48 thinkpad pulseaudio[10061]: pid.c: Daemon already running.
May  3 23:12:49 thinkpad kernel: [34496.778063] __ratelimit: 12 callbacks suppressed
May  3 23:12:49 thinkpad kernel: [34496.778069] rumus[10033]: segfault at c ip 0071895f sp bfe5c450 error 4 in libqt-mt.so.3.3.8[1a8000+6ed000]
May  3 23:12:49 thinkpad gdm-binary[786]: WARNING: GdmDisplay: display lasted 2,298922 seconds
May  3 23:12:49 thinkpad acpid: client 10056[0:0] has disconnected
May  3 23:12:49 thinkpad acpid: client connected from 10067[0:0]
May  3 23:12:49 thinkpad acpid: 1 client rule loaded
May  3 23:12:50 thinkpad gdm-binary[786]: WARNING: GdmDisplay: display lasted 0,550053 seconds
May  3 23:12:50 thinkpad acpid: client 10067[0:0] has disconnected
May  3 23:12:50 thinkpad acpid: client connected from 10074[0:0]
May  3 23:12:50 thinkpad acpid: 1 client rule loaded

-- 
display freezes, [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
https://bugs.launchpad.net/bugs/507504
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