[Bug 13490] after some time of inactivity display turns black - requires hard restart

[<bug...@bu...>]

http://bugzilla.kernel.org/show_bug.cgi?id=13490





--- Comment #3 from Ben Gamari <bg...@gm...>  2009-06-14 09:05:58 ---
Indeed, the problem does seem to be a gpu wedge,

Xorg backtrace:
(gdb) bt
#0  0x00007fcd99d6bec7 in ioctl () from /lib/libc.so.6
#1  0x00007fcd98b0879e in drmIoctl (fd=8, request=25688, arg=0x0)
    at xf86drm.c:187
#2  0x00007fcd98b0c518 in drmCommandNone (fd=8, drmCommandIndex=24)
    at xf86drm.c:2313
#3  0x00007fcd9868aca0 in I830BlockHandler (i=0, 
    blockData=<value optimized out>, pTimeout=0x7fff18e176e0, 
    pReadmask=0x87d8e0) at i830_driver.c:2295
#4  0x00000000004e7999 in AnimCurScreenBlockHandler (screenNum=0, 
    blockData=0x0, pTimeout=0x7fff18e176e0, pReadmask=0x87d8e0)
    at animcur.c:222
#5  0x00000000005d1ca2 in compBlockHandler (i=0, blockData=0x0, 
    pTimeout=0x7fff18e176e0, pReadmask=0x87d8e0) at compinit.c:166
#6  0x000000000042c420 in BlockHandler (pTimeout=0x7fff18e176e0, 
    pReadmask=0x87d8e0) at dixutils.c:379
#7  0x000000000047db6f in WaitForSomething (pClientsReady=0x4be0a50)
    at WaitFor.c:215
#8  0x0000000000446924 in Dispatch () at dispatch.c:362
#9  0x000000000042689e in main (argc=10, argv=0x7fff18e178d8, 
    envp=0x7fff18e17930) at main.c:283



Xorg components as of Sun Jun 14 04:59:52 EDT 2009
drm:     6e88027eb5ae669cbe9710bca5309b3a06b0adc5
xf86-video-intel:     374368109c1db603b6fb514212d0e9661b93f913
mesa:     d9617deb008b75f4a605a30408aeb1948139c33e
xserver:     92bc088aab7a904d64641d6e5d2a76058e9fa6fc

Linux ben-laptop 2.6.30-ben #21 SMP Wed Jun 10 13:27:14 EDT 2009 x86_64
GNU/Linux

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