I've cherry-picked e2e407dc093f530b771ee8bf8fe1be41e3cea8b3 on to 4.4.0-28.47 and compiled the kernel and it looks like this did solve the issue. (Just tested for 15 minutes, but with the default kernel it appeared within seconds already).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1553503 Title: multi monitors - black flashes or black screen when the mouse cursor leaves a monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553503/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs