*** This bug is a duplicate of bug 1862081 *** https://bugs.launchpad.net/bugs/1862081
So that we can get a fresh report with the latest system details, please open a new bug by running: ubuntu-bug mutter -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1863391 Title: GNOME fractional scaling: fullscreen video misbehaves Status in gnome-shell package in Ubuntu: Confirmed Status in mutter package in Ubuntu: Confirmed Bug description: When scaling the desktop to e.g. 150%, fullscreen video does seem to trigger constant changes of the scaling factor: the system switches every 0.5s from 150% to 100% to 200% or things like those. The problem does not occur, when there is another windows present (e.g. a "always-on-top" terminal windows). Also, KDE doesn't have this problem. The problem exists in freshly installed 19.10 and 20.04, too. I couldn't find any reason, why sometimes firefox fullscreen videos do work and sometimes not. Video playback (e.g. GNOME video player or VLC) does not work properly in 19.10, whereas it works most of the time in 20.04. How can I help to dig into this? 1) Ubuntu 19.10, 20.04 2) latest available (problem exists since several weeks) 3) What you expected to happen: fullscreen video playback in scaled mode 4) What happened instead: screen starts changing (randomly?) the scaling factor or at least this is the impression one gets --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu16 Architecture: amd64 CurrentDesktop: ubuntu:GNOME DisplayManager: gdm3 DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-01-31 (19 days ago) InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200130) Package: gnome-shell 3.34.3-1ubuntu1 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 5.4.0-12.15-generic 5.4.8 RelatedPackageVersions: mutter-common 3.34.3-1ubuntu1 Tags: focal Uname: Linux 5.4.0-12-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1863391/+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