** Description changed: + [ 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. + * 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: + [ Workaround ] - MUTTER_DEBUG_TRIPLE_BUFFERING=always + 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.
-- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/2017137 Title: Xorg sessions on Intel GPUs stutter noticeably in 23.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2017137/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
