Following the guide at: How do I change the wallpaper in LightDM? I attempted to modify the background for the unity greeter. However, whenever I attempt to turn off dynamic switching:
lightdm@ubuntu-12:/root$ gsettings set com.canonical.unity-greeter draw-user-backgrounds 'false'
I get a warning:
** (process:1859): WARNING **: The connection is closed
The same is true when I attempt to establish a background image, I use the command as described in the before mentioned article and I get a warning. No changes take place. When I do the same as root I do not get any warnings, but no changes take place. I am hiding the user list and showing the manual login box. I don't know if this has anything to do with the problem, but I thought I would mention it. Thanks!