Well I had almost given up. 2 weeks of pain, but finally can confirm that Rockwalrus' Compiz fix worked for me. My setup: Dell Precision M4800 laptop on docking station with 2 x external Dell monitors attached to DisplayPorts. Attacing ubuntu-bug xorg output for fixed and broken configs.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1382462 Title: 10de:0dfa 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 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs