I can recall similar reports with Unity 5.6 running on Nvidia cards with the proprietary driver. Can you check if the issue occurs with Unity 5.8 too?
** Changed in: unity Status: New => Incomplete ** Also affects: nvidia-graphics-drivers (Ubuntu) Importance: Undecided Status: New -- 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/938738 Title: Half screen display on primary when extending To manage notifications about this bug go to: https://bugs.launchpad.net/disper/+bug/938738/+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