The trigger may be when a) the screen is locked, and b) the screen blacks out. Logging back in after this leads to the flickering black rectangle at the top of the secondary monitor. This occurs without any use of SDL.
Switching the monitor off and on does not fix the problem. Disconnecting and reconnecting the monitor causes the second monitor to loose signal. At this point, it is possible to logout and then login again. I guess that this restarts gnome. In any case, signal to both monitors is restored, and the black bar at the top of the second monitor has disappeared. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2074559 Title: [nouveau] Top margin of secondary monitor covered with black flickering rectangle To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2074559/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
