Comment 4 for bug 2052913

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theofficialgman (theofficialgman) wrote : Re: Large Performance Regression in gnome-shell from Ubuntu Jammy to Ubuntu Noble

Sorry I missed the replies in my email
I will test disabling the extensions later

I can confirm that these are the same (because I use the same custom kernel and GL/Vulkan/EGL/GLES driverstack):

  * lspci -k # to see if the kernel driver changed
  * es2_info | grep ^GL_ # to see if the GL driver changed

I will not be able to do this because of no wayland support in the driverstack:
  Or by checking the scanout method using MUTTER_DEBUG=kms and grepping the log for "Post" (Wayland only though).

I will check this later as well:
  You can test that theory by comparing the windowed performance between jammy and noble.