I'm also experiencing this with an NVidia card and a Samsung s27a850 monitor. Can someone who is knowledgable about the software advise about what a fix would require?
For me, the main symptoms are 1) pressing power button on monitor causes Ubuntu to drop the screen from list of displays, rearranging my meticulously positioned windows. 2) monitor doesn't go to sleep when 2 other monitors go to sleep. It stays on indefinitely. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1313539 Title: [DisplayPort] monitor shows black screen and "no input signal" after turning the monitor off and on manually To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1313539/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs