This sounds like the cumulative effect of a number of Mir bugs in the display configuration handling that resulted in the surfaces composited by a nested server appearing in the wrong place.
It is plausible that the fixes landed up to -r3056 have resolved this (they certainly address Mir issues in this area) - but I was waiting for the 0.18 release to test with the full stack. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1511538 Title: 1/2 screen on external monitor To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-pocket-desktop/+bug/1511538/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs