*** This bug is a duplicate of bug 1754284 *** https://bugs.launchpad.net/bugs/1754284
This sounds like bug 1754284 so I will mark it as a duplicate until proven otherwise. The workaround for that would be to select 'Ubuntu on Wayland' on the login screen. If you disagree with this then please run the following command to collect more information: journalctl -b0 > journal.txt and attach the resulting text file here. ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** This bug has been marked a duplicate of bug 1754284 Fullscreen windows are tearing in Xorg sessions -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1890135 Title: LInes/Flickers occur in upper half of the screen. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1890135/+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