There is a ppa for bug #921236 which would probably be worth testing first, to rule out if this is just a dupe of that bug.
https://launchpad.net/~sarvatt/+archive/sru6 Test that out, then report your findings back here. ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/979004 Title: Xorg freezes or an external display is not handled correctly To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/979004/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
