I have two machines running Ubuntu 13.10. One of the machines is changing the login wallpaper while choosing an account.
I would like to have this on the other machine as well. But nothing changes while changing background. I tried Ubuntu Tweak to choose a default login background, but all the options are greyed out.
I have searched the internet. I placed the background already in the default folder: usr/share/background. Changed the owner to root like the other wallpapers and also the permissions. Nothing changes.
Anyone an idea what I can do to let this work?
Found out that there was a little lock in Ubuntu Tweak. My Ubuntu Tweak is not greyed out anymore. I changed the login background... but it does not change after logging out to what I want... is just became black.