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Configuring GNOME to use Xorg
At the login screen, select the "gear" icon and select *GNOME on Xorg*.
Login screen - select GNOME on Xorg
configuring-xorg-as-default-gnome-session_2.png
Once login is completed the X11 windowing system will be in use, as can be seen by returning to *Settings* > *About*. This change will persist unless changed back at the login screen.
Settings - About
configuring-xorg-as-default-gnome-session_3.png
Changing the default GNOME session via configuration file
As an alternative, this change can be made by editing a configuration file `/etc/gdm/custom.conf`.
Open `/etc/gdm/custom.conf` and uncomment the line:
WaylandEnable=false
Add the following line to the `[daemon]` section:
DefaultSession=gnome-xorg.desktop
Save the `custom.conf` file.
Logout or reboot to enter the new session.
With the above changes applied, the option to set the GNOME session to use Wayland will actually be removed from the "gear icon" menu on the login screen.