Please collect a full backtrace from the crash. See http://wiki.ubuntu.com/X/Backtracing for directions.
Also please attach the output of `lspci -vvnn`. If you made any customizations to your xorg.conf, please attach that as well.
Please collect a full backtrace from the crash. See http:// wiki.ubuntu. com/X/Backtraci ng for directions.
Also please attach the output of `lspci -vvnn`. If you made any customizations to your xorg.conf, please attach that as well.