Reproduced the issue on Firefox 135.0a1 (2024-11-27) on Ubuntu 24.04 by following the infos provided in Comment 1.
The issue is fixed on Firefox 135.0b9 on the same system. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/2078774 Title: Fullscreen Firefox is not being rendered as direct scanout in GNOME 46/47 Status in Mozilla Firefox: Fix Released Status in Mutter: Fix Released Status in firefox package in Ubuntu: Fix Committed Status in mutter package in Ubuntu: Won't Fix Bug description: Fullscreen Firefox is not being rendered as direct scanout in GNOME 47. Press Alt+F2, type "lg", click Flags and enable PAINT_DAMAGE_REGION. This will show you in red when part of the screen is being composited. When an app is getting fullscreen direct scanout, all redness should go away. It does for Chrome, but not for Firefox. To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/2078774/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
