Bug#554145: Happened quite reproducably today
Martin Steigerwald wrote:
> Hallo!
>
> Happened almost everytime when I switched from tty7, display :0, to tty8,
> display :1 and then back to tty7, display :0.
>
> I know rebooted the laptop to exclude some old libs still in use effects. I
> am using TuxOnIce snapshotting, thus it has not been rebooted before.
>
> I was using tuned CFS - Completely Fair Scheduling - settings, but I
> resetted them to defaults before the last crash happened.
>
> Backtraces look similar if not the same, here another example:
>
> Restore TV PLL
> Restore TVHV
> Restore TV Restarts
> Restore Timing Tables
> Restore TV standard
> Leaving Restore TV
>
> Backtrace:
> 0: /usr/bin/X(xorg_backtrace+0x3b) [0x81314cb]
> 1: /usr/bin/X(xf86SigHandler+0x51) [0x80c1df1]
> 2: [0xb7816400]
> 3: /usr/lib/libpixman-1.so.0 [0xb779a386]
> 4: /usr/lib/libpixman-1.so.0 [0xb775fbb7]
> 5: /usr/lib/libpixman-1.so.0(pixman_fill+0x62) [0xb77869b2]
> 6: /usr/lib/xorg/modules//libfb.so(fbFill+0x425) [0xb71603e5]
> 7: /usr/lib/xorg/modules//libfb.so(fbPolyFillRect+0x162) [0xb71605e2]
> 8: /usr/lib/xorg/modules//libxaa.so [0xb714857a]
> 9: /usr/bin/X [0x817a884]
> 10: /usr/bin/X(miPaintWindow+0x231) [0x8111a41]
> 11: /usr/bin/X(miWindowExposures+0x13a) [0x8111daa]
> 12: /usr/bin/X [0x80cb4e2]
> 13: /usr/bin/X(miHandleValidateExposures+0x74) [0x8129a14]
> 14: /usr/bin/X(UnmapWindow+0x148) [0x80769d8]
> 15: /usr/bin/X(ProcUnmapWindow+0x6d) [0x808bf3d]
> 16: /usr/bin/X(Dispatch+0x357) [0x808c8b7]
> 17: /usr/bin/X(main+0x3aa) [0x8071b8a]
> 18: /lib/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb74967a5]
> 19: /usr/bin/X [0x8071051]
>
Please try to get a debugging backtrace with gdb after installing
xserver-xorg-core-dbg and libpixman-1-0-dbg
Brice
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