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How to change resolution of Debian-based OS GDM3 Login Screen

By Nenad Karlovcec1 min read
linuxdebianresolutiongdm3

I'm transitioning most of my VMs away from Windows (where possible) to Debian and one of the things that I noticed was that the default resolution of the GDM3 login screen was different from the resolution of the VM once you logged in. Mind you, this is a purely cosmetic difference, but it still bugged me for some reason.

I found that the easiest way to achieve the desired effect - to have the same resolution on the login screen and in the VM when logged in - is actually very simple.

Once everything is set up as desired, run this command:

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

And that's it - now the resolution should be set for all users in the login screen.

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