forwarded 453069 https://bugs.freedesktop.org/show_bug.cgi?id=10617 thank you Matthias Berndt wrote: >> get a new core if needed, run "gdb >> /usr/bin/Xorg core" >> and then enter "bt full". Send us the whole output of gdb. >> > The stack trace is in the attachment. Thanks, that's already reported upstream at the URL above. I added a comment there, feel free to add more if you think it could help. Brice