Version: (using KDE 4.3.0) Installed from: Mandrake RPMs This is my system: CORE2 DUO E8400 3GHz P5K3 Deluxe FSB 1600 4GB RAM DDR3 1333 Nvidia GeForce 8800GT 1024 DDR3 PCI-Express : nvidia display driver version 185.18.31 This is a sample clip that shows the problem. I recorded it on my desktop. In a fresh session of kde 4.3 http://digidownload.libero.it/purple_rain77/archivio/kde4/kde43.avi I hope it is useful Regards
looks like a driver bug or "misconfiguration" can you please try: a) activate compositing but disable (uncheck) /all/ plugins? b) the other backend (XRender/OpenGL, "Advanced Tab") c) /non/ Trilinear Texture Filtering (Bilinear is pretty nice as well ;-) d) Disable direct rendering anyway: in case non of the above cahnges anything, please attach your /etc/X11/xorg.conf (or the Device, Screen & Extensions sections at least) and the nvidia-settings ("nvidia-settings -q all > my_nvidia.settings") for inspection
After enabling direct rendering, all seems to work properly. Don't nvidia cards use indirect rendering for composite? thank you for support http://digidownload.libero.it/purple_rain77/archivio/kde4/kde43_effect_ok.mp4
nVidia has it's own dri system (from before X11 dri existed...) so you must not enable the dri option dri in Xorg.conf - but that doesn't hit direct rendering in this regard. in general direct rendering should be preferred (for better performance)
Ok. Really thank you. On my distribution, with composite enabled, direct rendering has disabled by default. I thought it was right configuration for my system. Ciao :-)