I have the same problem happening after the upgrade from 15.10 to 16.04. I have a Dell Latitude E7450 plugged into a dock with 3 external monitors (I'm not using the notebook display). After the upgrade by some reason two of the monitors randomly blanks and come back after 1 or 2 seconds. I couldn't find a way to reproduce the problem, it is random.
The interesting thing is that 1 of the 3 monitors never does that, the one that is using a VGA cable. The other two are using DisplayPort. -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to evince in Ubuntu. https://bugs.launchpad.net/bugs/1574617 Title: External monitor keeps going blank To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/evince/+bug/1574617/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs