Bug#327699: xserver-xorg: [libGLcore.so] crashes X when resizing or moving glx window

[Michel Dänzer <daenzer@debian.org>]

On Sun, 2005-09-11 at 17:57 +0200, David Schmitt wrote:
> Package: xserver-xorg
> Version: 6.8.99.900.dfsg.1-0pre1
> Severity: normal
> Tags: experimental
> 
> Dear XSF!
> 
> When resizing or moving a glxgears window, the X server crashes with
> this backtrace:
> 
> |Backtrace:
> |0: /usr/X11R6/bin/X(xf86SigHandler+0x80) [0x8088b60]
> |1: [0xffffe420]
> |2: /usr/X11R6/lib/modules/extensions/libGLcore.so [0xb7ca0a5c]
> |3: /usr/X11R6/lib/modules/extensions/libGLcore.so(_swrast_Clear+0x78a) [0xb7ced92a]
> |4: /usr/X11R6/lib/modules/extensions/libGLcore.so [0xb7d878ab]
> |5: /usr/X11R6/lib/modules/extensions/libGLcore.so(_mesa_Clear+0x159) [0xb7c3df89]
> |6: /usr/X11R6/lib/modules/extensions/libGLcore.so(glClear+0x25) [0xb7c16085]
> |7: /usr/X11R6/lib/modules/extensions/libglx.so(__glXDisp_Clear+0x1e) [0xb7e4d94e]
> |8: /usr/X11R6/lib/modules/extensions/libglx.so(__glXRender+0xe3) [0xb7e47ea3]
> |9: /usr/X11R6/lib/modules/extensions/libglx.so [0xb7e4a696]
> |10: /usr/X11R6/bin/X(Dispatch+0x172) [0x80c6dc2]
> |11: /usr/X11R6/bin/X(main+0x414) [0x80d3734]
> |12: /lib/tls/libc.so.6(__libc_start_main+0xd0) [0x44f72ec0]
> |13: /usr/X11R6/bin/X [0x80700b1]
> |
> |Fatal server error:
> |Caught signal 11.  Server aborting

This is a known upstream issue, see
https://bugs.freedesktop.org/show_bug.cgi?id=4087 .


> Perhaps related: X reports to enable DRI, but glxinfo doesn't think so:

It's related insofar as the crash only occurs with indirect rendering.

> |david@zion:~$ glxinfo | grep rendering
> |direct rendering: No


See the Debian X FAQ, 'How can I help debug 3D acceleration problems?',
but basically start from the output at the top of

LIBGL_DEBUG=verbose glxinfo


-- 
Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer