Where is the wallpaper you are using stored? is that file accessible to other users? the lightdm users can only display files it can read, if your user directory access is restricted that doesn't work, it's a known issue
** Package changed: lightdm (Ubuntu) => unity-greeter (Ubuntu) ** Changed in: unity-greeter (Ubuntu) Importance: Undecided => Low ** Changed in: unity-greeter (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/970634 Title: New wallpapers outside of default stack do not reflect in the login screen Status in “unity-greeter” package in Ubuntu: Incomplete Bug description: Hello, When a Desktop wallpaper is set to something which is not part of the default wallpaper stack, then the login screen defaults to purple default wallpaper screen instead of the new background selected. This causes to loose consistency which was the intended purpose to have the same login screen background for user as his desktop wallpaper. Thanks. Abhishek To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/970634/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp