Does this happen every cold boot or only this once, or intermittently? You said it crashed at cold boot... Are there warm boots or other situations where it'll work fine?
If the issue is still happening, try uninstalling nvidia (and maybe purging), and reinstalling. ** 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/952059 Title: 1.11.4-0ubuntu6 :Xorg crashed with SIGSEGV To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/952059/+subscriptions _______________________________________________ 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