I have recently upgraded from 11.10 to 12.04. Normal upgrade, no new installation. In 11.10 I was using Simple LightDM Manager tool to set a custom wallpaper on the login screen. This tool unfortunately doesn't seem to do anything since I have upgraded. I have also heard that 12.04 is suppose to have this feature (changing login wallpaper per different user) by default. I have searched in settings but unfortunately in vain.
So, to keep it short, could somebody direct me to the option(s) page where I can make the desired changes.
Best Answer
If I understand you correctly, you want the desktop background for the login screen to change depending on which user is highlighted.
Yes, it does do this by default (it sets it to the one the user uses). The caveat is that since you upgraded, it doesn't automatically set this for existing users.
Simply change the wallpaper for each user, then change it back to what you had before. This will update the login screen to show the correct wallpapers. I had to do this with network users.