A monitor going blank and then coming back almost always means that a stable signal (enough bandwidth) can't be maintained.
You should start by trying to replace the DisplayPort cable, or at least re-plugging the one you have. If that doesn't solve it then to at least prove the theory please try using 1920x1080 for a little while. ** Tags added: bandwidth nvidia ** Package changed: xorg (Ubuntu) => nvidia-graphics-drivers-510 (Ubuntu) ** Changed in: nvidia-graphics-drivers-510 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1978401 Title: display turns suddenly off and then on again To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-510/+bug/1978401/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp