Changing Ubuntu's Lock Background

2019-04-11 01:45:00 +0000 - Written by Carl Burks

Copy the css file:

cp /etc/alternatives/gdm3.css ~/Deskop

Edit it

code ~/Desktop/gdm3.css

Find the “lockDialogGroup”

Change it as needed.

background-image: url(file:///storage/theme/cthulhu.svg);

Restart…. or

gdbus call --session --dest org.gnome.Shell --object-path /org/gnome/Shell --method org.gnome.Shell.Eval 'Main.loadTheme();'

or

ALT-F2
restart