I see you still have some leftover bits from a prior -nvidia binary driver installation. Likely it's causing your issue.
NonfreeKernelModules: nvidia See http://wiki.ubuntu.com/X/Troubleshooting/ for a guide in how to clean up after the binary drivers. If you need more help, ask on http://answers.launchpad.net/ubuntu/ ** Changed in: xserver-xorg-video-nouveau (Ubuntu) Status: Confirmed => Invalid -- X freeze/crash with noveau driver https://bugs.launchpad.net/bugs/553789 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in ubuntu. _______________________________________________ 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