ATI driver with KDE desktop effects: black turns white


I have recently installed OpenSUSE 11 with KDE 4.1.1. Everything OK, except I could not get KDE or Compiz desktop effects working properly. So I updated my ATI Radeon 9800 drivers using the one click install method. Everything looks OK, could not get Copiz to work but KDE desktop effects is working now. However, whenever I play a video full-screen with VideoLAN, the black bars at the top/bottom are now white, and the original “black screen” screensaver is now a white screen. Also, my video hardware acceleration does not appear te be working.

Is there anything I can check to fix this?