I've experienced almost the same things as Mr. Wep. I've got a Nvidia 7600GS, and using the nvidia module from nvidia-glx-new package. According to the Xorg log everything is fine, but when I set SystemSettings/Desktop/DesktopEffects/AdvancedOptions/CompositionType from XRender to OpenGL, the whole screen gets black, and the system behaves just as Mr. Wep described. So now I'm using kde4 without the desktop effects.
some additional information: Hardy kubuntu kde4 edition lspci | grep VGA 01:00.0 VGA compatible controller: nVidia Corporation G73 [GeForce 7600 GS] (rev a2) xdpyinfo | grep Composite Composite Glx extension works fine as well. Peter -- blank screen with kwin effects https://bugs.launchpad.net/bugs/182288 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs