This fix worked for me as well. Lenovo T420 with Intel integrated gpu and 2 external monitors attached to a docking station.
This still isn't included in the Ubuntu distribution yet, so every time upgrade manager runs, it recommends that I "upgrade" back to the broken version. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/992778 Title: Dual Monitor Freeze after changing Display Settings in ubuntu 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/992778/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs