October 1, 2016

Move GNOME Login Window to Primary Display

If you have two or more monitors (or a laptop with an external display) and are using GNOME 3 as your desktop environment, you may encounter an issue where the GNOME Display Manager (GDM) does not place the login window on the correct monitor.

To correct this problem, first make sure your display settings are correct once you've logged in. Then, copy ~/.config/monitors.xml to /var/lib/gdm3/.config and reboot:

cp ~/.config/monitors.xml /var/lib/gdm3/.config 

The file you've just copied contains your customized display settings. Placing a copy of the file in this location instructs GDM to use the same settings and should correct this problem.

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