I have the same issue where by I am thrown to the login screen (The first time caused a complete freeze of the system). I've not seen the issue on my other desktops which also run nvidia cards of various versions. This is a real pain for me as this is my main work desktop!
The card that this fails on is: 02:00.0 VGA compatible controller: NVIDIA Corporation G84 [Quadro FX 570] (rev a1) -- 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/973096 Title: Nvidia driver causes xorg crash To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/973096/+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