10 years ago
It looks like this is already possible
So I am marking this idea "Implemented"
Right now, I can take a picture file, edit it in GIMP or any other image editing software if I'd like, and use the About Me program to put it on my login screen. In what other way should it be customizable?
i agree, when you change your pic using the "about me" option in the control centre it should change the login image displayed next to your name on the gdm screen
No, not really
You can change log-in screen's background with 'Ubuntu Tweak'or 'Ailurus'.
This is a personal opinion not an idea