https://bugs.freedesktop.org/show_bug.cgi?id=79696
--- Comment #8 from Marti Raudsepp marti@juffo.org --- Created attachment 100902 --> https://bugs.freedesktop.org/attachment.cgi?id=100902&action=edit gdb-backtrace2.txt
Here's a backtrace from a crashed Xorg (including "bt" and "bt full").