Leandro Noferini <lnoferin@cybervalley.org> writes:I would like to change the default background of gdm login screen on my laptop (to put into my contacts); I looked for a solution but none of my findings worked: is there a way to change this background that actually works?Any help? In the meantime I installed lightdm and I have changed the login screen with the utility lightdm-gtk-greeter-settings but I would like to use gdm.
There is no easy way to change the gdm3 theme, but you can. The Arch Wiki has a small how-to:
https://wiki.archlinux.org/index.php/GDM Floris