How to change login screen

I change the login screen from configure desktop ->login screen. After I changed the login screen it only change and display the username and password theme and background is missing. Anybody can change the login screen including the background? I’m using opensuse 13.2, kde plasma 4.14, kdm 4.

There are several themes in the lists at least one is truly minimal. Which theme did you choose??

Yes, think you’re right. I just changed the login screen with the background one. And the background is appear.

You can also customize the login screen by changing pictures and editing xml file in /usr/share/kde4/apps/kdm/themes/openSUSE