That happens to me also on Ubuntu Gnome 17.04. It's not random though but rather when the screen shuts off after I leave the computer inactive. When I turn the screen back on, it's 90 degrees clockwise (and quite puzzling to get the mouse working to be able to reboot because of muscle memory).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1682978 Title: Random Screen Rotation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1682978/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs