Ubuntu
mutter package

  1. Bug #2052913
  2. Comment #5

Comment 5 for bug 2052913

Revision history for this message
theofficialgman (theofficialgman) wrote : Re: Large Performance Regression in gnome-shell from Ubuntu Jammy to Ubuntu Noble

I tested all of these:
  * gnome-extensions disable <email address hidden>
  * gnome-extensions disable <email address hidden>
  * gnome-extensions disable <email address hidden>
  * gnome-extensions disable <email address hidden>

and then had no effect on the performance on noble (yes they did disable and I could see the visible changed in UI). I tried rebooting afterwards with no improvement.

I did this:
  You can test that theory by comparing the windowed performance between jammy and noble.

noble performance is about equal with a maximized window and fullscreen (140fps)

jammy performance is a bit lower maximized window than fullscreen (162fps vs 177fps) but I see gnome-shell cpu usage at ~50% when when maximized window (vs 0-1% in fullscreen)

so yeah definitely appears to be an issue with fullscreen direct scanout not working and additionally just gnome performance regresssions with windowed mode .