This is going to sound weird, but I experienced something very similar. In my case, it wasn't a white screen rather a very large window covering the entire monitor. It could not get it to go away as it wasn't showing up anywhere I could kill it. I used the force quit application and killed the window and my desktop works fine.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to fglrx-installer in Ubuntu. https://bugs.launchpad.net/bugs/966352 Title: Dual-Monitor not working with fglrx in 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/966352/+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