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

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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.

7 Likes

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:
how-to-change-login-screen-background-post12