I've been experiencing these same problems when extending my desktop. Cloning the desktop works, but system is unstable for a minute or two. (As described in bug 877438)
chipset: nVidia Corporation GF104 [GeForce GTX 460] (rev a1) nvidia-current: 280.13-0ubuntu6 -- 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/813343 Title: nvidia drivers, second monitor covered by black To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/813343/+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
