Change the Login Screen in Debian Cinnamon

In Debian Cinnamon there is no Login Window settings like for an example in Linux Mint, so I will show you a little trick how you can change your login screen background.

You will need to edit LightDM Greeter Configuration file which is responsible for managing your login screen.

To do that, open Terminal and type

sudo nano /etc/lightdm/lightdm-gtk-greeter.conf

Find the line that looks like this

background=/usr/share/images/desktop-base/login-background.svg

That line says to use background with given image file path.

You can copy that line below and set path to your new login image.

If you have copied that line, make sure to put # in front of the old one to comment it so it will be ignored by the system.

background=/home/user/Pictures/new-login-background.svg

Now, your greeter configuration file will have these two lines

#background=/usr/share/images/desktop-base/login-background.svg
background=/home/user/Pictures/new-login-background.svg

Save and exit file.

Now you need to logout and the new login background should be displayed.