gdm

Comment 49 for bug 1652282

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Daniel van Vugt (vanvugt) wrote :

Phillip,

Mutter is not just a binary, but is also the library which provides ALL the graphics for the login screen and gnome-shell. So yes Ubuntu does use mutter for everything :)

If your Wayland login option has gone missing then that means the Wayland backend ("eglnative") of mutter had crashed during startup and so has been disabled. Please log a NEW bug for that by running:

  ubuntu-bug gnome-shell

on the machine.