Could you get a proper backtrace using these instructions: https://wiki.ubuntu.com/X/Backtracing
add "deb http://ddebs.ubuntu.com natty main restricted universe multiverse" to /etc/apt/sources.list, and run 'apt-get install xserver- xorg-input-joystick-debugsym xserver-xorg-core-debugsym' and get a backtrace. ** Changed in: xserver-xorg-input-joystick (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-joystick in Ubuntu. https://bugs.launchpad.net/bugs/655375 Title: incorrectly initialized uinput device causes xorg crash _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

