I see this was filed on the 13th. Had this been mentioned in the 45.2 mantic SRU bug[1], I wouldn't have released the package to updates on the 14th :/
1. https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2043000 -- 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/2046360 Title: Heavy stuttering in Firefox with mutter 45.1/45.2 Status in mutter package in Ubuntu: New Bug description: There is heavy stuttering visible in Firefox with mutter 45.1/45.2. This is a regression introduced upstream in mutter 45.1 (8f27ebf8), although it only hurts the triple buffering patch so that's where it's fixed: https://gitlab.gnome.org/Community/Ubuntu/mutter/-/commit/0b896518b2028d9c4d6ea44806d093fd33793689 https://gitlab.gnome.org/Community/Ubuntu/mutter/-/commits/triple-buffering-v4-45 [ Workaround ] In /etc/environment: MUTTER_DEBUG_TRIPLE_BUFFERING=always or "never" also works. Just not "auto". To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2046360/+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