Bug#777457: X: ../../glamor/glamor_vbo.c:70: glamor_get_vbo_space: Assertion `epoxy_glGetError() == 0' failed.

[Michel Dänzer <michel@daenzer.net>]

On 08.02.2015 20:38, Christoph Egger wrote:
> 
>   Sometimes "randomly" my X session crashes. The only trace I was so
>   far able to see is
> 
> slim[1734]: X: ../../glamor/glamor_vbo.c:70: glamor_get_vbo_space: Assertion `epoxy_glGetError() == 0' failed.

You can find out what triggers the GL error state by installing the
xserver-xorg-core-dbg package and attaching gdb to the Xorg process
(preferably from another machine via ssh) and setting a breakpoint in
_mesa_error. When the breakpoint triggers, get a backtrace with 'bt
full'. Keep doing this until the assertion fails, then let's take a look
at the backtrace of the last time _mesa_error was called before that.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer