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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!

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What is the output of service lightdm status command? –  Radu Rădeanu Oct 9 '13 at 16:13
lightdm start/running, process 905 –  user2766642 Oct 9 '13 at 18:01

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