I've had the same problem and added a very similiar bugreport into gnome's bugzilla.
-- gnome-display-properties: dual display does not work by default https://bugs.launchpad.net/bugs/221116 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
