If uninstalling xfs does the trick, it may be this is a dupe of bug #583525.
When doing the backtrace, if you could please run 'bt full' to collect all the variable states and such. ** Changed in: nvidia-graphics-drivers (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/659527 Title: xorg server crashes with nvidia-current _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp