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Bug#465421: xserver-xorg-video-intel: Segfault when using large (>2048) Virual display



Kim Hansen wrote:
> Package: xserver-xorg-video-intel
> Version: 2:2.2.0.90-3
> Severity: normal
>
>
> When I configure X for a dual screen setup with a large Virtual display
> it cashes unless I also turn of acceleration using the NoAccel option.
>
> This might be a duplicate of #452357, but the crash is immediate for me,
> it happens when gdm starts X.
>   

Probably related yes, but different symptoms.

> Backtrace:
> 0: /usr/bin/X(xf86SigHandler+0x7e) [0x80c675e]
> 1: [0xffffe420]
> 2: /usr/lib/xorg/modules/drivers//intel_drv.so(I830EmitFlush+0xe0) [0xb7a80a50]
> 3: /usr/lib/xorg/modules/drivers//intel_drv.so [0xb7aab4b8]
> 4: /usr/lib/xorg/modules/extensions//libdri.so(DRIDoBlockHandler+0xc7) [0xb7ed1f57]
> 5: /usr/lib/xorg/modules/extensions//libdri.so(DRIBlockHandler+0x62) [0xb7ed0dd2]
> 6: /usr/bin/X(BlockHandler+0x94) [0x8090e14]
> 7: /usr/bin/X(WaitForSomething+0x148) [0x81ada38]
> 8: /usr/bin/X(Dispatch+0x82) [0x808cfb2]
> 9: /usr/bin/X(main+0x48b) [0x807470b]
> 10: /lib/i686/cmov/libc.so.6(__libc_start_main+0xe0) [0xb7c72450]
> 11: /usr/bin/X(FontFileCompleteXLFD+0x205) [0x8073a81]
>   

Could you install xserver-xorg-video-intel-dbg and xserver-xorg-core-dbg
and try to get a debugging backtrace with
gdb?

See http://wiki.debian.org/XStrikeForce/XserverDebugging

Brice




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