How to change login screen background in Ubuntu Mate 21.04?

I installed Ubuntu Mate on my computer and since then I still haven't found a way to remove that green background from the login screen. I didn't find any section in the control center that has to do with the login screen. Could someone help me solve my problem?

Ubuntu Mate 21.04


Hi and welcome to the Ubuntu MATE community,
It's a bit tricky as there has not been yet an utility to customize the new Arctica Greeter. There's been several threads about this.
Here's a comment explaining how:

Basically, you need to edit a file with the path to your desired background and then run another command.
To do so, in a terminal, enter:
sudo pluma /usr/share/glib-2.0/schemas/30_ubuntu-mate.gschema.override
and edit line 2 (background='/usr/share/backgrounds/ubuntu-mate-common/Green-Wall-Logo.png') , replacing the path with the one to your wallpaper and save the changes. Don't screw up or it could cause trouble.
Then in a terminal:
sudo glib-compile-schemas /usr/share/glib-2.0/schemas/
And that's it.
Hope this helps.


Yes it helps, it works!

1 Like

It worked with U.MATE v22.10. Thank you so much.

P.S. I found an easier way to do next time explained here: