I also had a problems after today xserver-xorg-core update, but in mine case problem was with Wine applications, i couldn't start them (even winecfg utility), because X server was restarting to the login screen.
The resolution was simple, and I have found it on Ubuntu forums, nvidia binary drivers reinstallation resolved the problem :)
I also had a problems after today xserver-xorg-core update, but in mine case problem was with Wine applications, i couldn't start them (even winecfg utility), because X server was restarting to the login screen.
The resolution was simple, and I have found it on Ubuntu forums, nvidia binary drivers reinstallation resolved the problem :)