This seems to at least help: https://extensions.gnome.org/extension/1445/fix-fullscreen-tearing/
Maybe something like that should be shipped by default -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1810126 Title: Extremely visible screen tearing with VLC and Firefox/Chromium Status in mutter package in Ubuntu: New Bug description: When watching videos in VLC on an external screen there is extremely visible screen tearing. But it's likely that the external screen only makes the problem worse as this website shows a lot of vsync issues in both Firefox and Chromium even with just the single screen: https://www.vsynctester.com/ ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: mutter 3.28.3-2~ubuntu18.04.2 ProcVersionSignature: Ubuntu 4.15.0-43.46-generic 4.15.18 Uname: Linux 4.15.0-43-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sun Dec 30 23:16:26 2018 InstallationDate: Installed on 2018-05-31 (213 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: mutter UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1810126/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
