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-- 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/2017137 Title: GNOME 44.0 Xorg sessions on Intel GPUs stutter noticeably in 23.04 Status in mutter package in Ubuntu: Fix Released Status in mutter source package in Lunar: Fix Released Bug description: [ Impact ] Xorg sessions on Intel GPUs stutter noticeably in 23.04 Seems like a combination of: * over-aggressive latency optimizations in the latest version of triple buffering; and * gnome-shell 44 being slightly less efficient at some operations like scrolling the app grid. [ Workaround ] Add this to /etc/environment: MUTTER_DEBUG_TRIPLE_BUFFERING=always [ Test Plan ] 1. Find a machine with an Intel GPU. 2. Log into 'Ubuntu on Xorg'. 3. Press Super+A and scroll the icon right left/right. It should be perfectly smooth like in Wayland sessions. [ Where problems could occur ] Triple buffering affects all frame scheduling so any mistakes can cause high CPU usage, screen freezes and stutter. Try not to make mistakes. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2017137/+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
