Version: (using KDE 4.0.0) Installed from: Gentoo Packages Compiler: x86_64-pc-linux-gnu-gcc 4.1.1 amd64 OS: Linux In System Settings->Desktop->Screen Saver, choose a screen saver like "Lorenz Atractor" or "Polygons". Its preview does not have a black background; instead it is some screen capture or just garbage. The same happens to its "test" and the actual saver execution. Some screenshots are on their way.
Created attachment 23174 [details] Screenshots and sysInfo
*** This bug has been marked as a duplicate of 156245 ***