Comment 12 for bug 1324373

I can confirm the fix suggested by giuband. Changing the permissions of my custom wallpapers made them work with the lock screen for me. Maybe there should be some sort of pop-up warning in this case? E.g. if the user tries to set a wallpaper that is not readable by the greeter, the switchboard plugin could warn them and provide a link with instructions on how to fix it? Or even give them a button to auto-fix the permissions?