It is bug as lightdm should copy the wallpaper to a readable directory. I had an encrypted home and forget about it, that was my fault. But I still think that this should be handled more properly as it could be copied to another directory - just for lightdm.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to unity-greeter in Ubuntu. https://bugs.launchpad.net/bugs/992646 Title: LightDM does not use users wallpaper if not selected from default Status in “unity-greeter” package in Ubuntu: Fix Released Bug description: In Ubuntu 12.04 LTS (1.2.1-0ubuntu1) the wallpaper of the user is not used as long as it's not the right resolution and located under /usr/share/backgrounds. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/992646/+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
