I have the same problem, also on a T520 on Ubuntu 14.04 with nvidia-331-updates. The nvidia-346 did not improve anything. I do not even have the option to boot on discrete graphics in BIOS since I end up with a black screen.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1382462 Title: Desktop/windows painted incorrectly in dual monitor configuration To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1382462/+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
