Hi Wolfgang, > If I use the proprietary fglrx driver, some effects like wandering through> windows with Alt + TAB are acceptable at times, but not if more than about> eight window are open. Others, like moving a window around the screen with> transparency enabled, are never smooth. If I use the opensource radeon> driver, it’s even worse. The open-source driver should accelerate all that stuff pretty well,so the question is whats going wrong in your case.An R300 is clearly powerful enough for simple stuff like a GLcomposition manager. Have you been using EXA or XAA? - Clemens___________________________________________________This message is from the kde mailing list.Account management: https://mail.kde.org/mailman/listinfo/kde.Archives: http://lists.kde.org/.More info: http://www.kde.org/faq.html.