Sorry it took so long but I had to reinstall due to an unrelated problem. The reinstall didn't make any difference to this problem though. I also tested Windows 8 with dual screens, just to rule out the monitor(s) and it worked fine in Windows 8.
I tried the daily image on a Live USB and that worked fine too, no problem at all even when opening and running programs that always seemed to cause this problem, i.e. System Settings, Totem Video Player et al. Dual monitors worked flawlessly. I will try and free up some disk space and install the live image onto a disk and test it that way too just to be sure. -- 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/1324113 Title: Screen goes black or flashes with Dual Monitors when certain apps are opened. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1324113/+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