![]() ![]() I could no longer use the desktop cube animation when switching virtual desktops, for example. The effect was that certain types of desktop bling, which use 3D graphics, were no longer available. So, what I did was in the desktop settings I set the compositor to use Xrender (which is 2D only). The 3D openGL performance of the open source drivers isn’t up to snuff yet, but the 2D acceleration is fine. This should also yeild similar gains with the open source nouveau driver. On the topic of the removal of the binary blob graphics drivers for nvidia from Arch Linux, I did an experiment for kwin with the open source (Gallium3D) ATI drivers. One finally does get the benefit of a hardware-accelerated desktop rendering. With the open source drivers, using the 2D-only Xrender for desktop compositing instead of OpenGL gave me a very nice performance boost (at this time). The gain, however, for that small scrifice, was considerable. The Radeon drivers have already improved markedly twice this year, and the default (on Arch Linux anyway) has now switched from the classic mesa driver over to Gallium3D. In general Arch will pick up new stuff like this within a month or so. This is great on Arch Linux, which has rolling updates. Having said that, the Radeon drivers are improving very rapidly: I think this requires you to install a helper application (it may be called kde-compiz) which will also install compiz itself as a dependency. Go to System Settings –> Default Applications –> Window Manager –> Use a different window manager ![]() You can always run KDE with compiz as the window manager. ![]() Kwin’s feature set is useful enough that I tolerate the less than flawless performance. The ATI drivers are much faster, but tend to be less stable. I defiantly think there is a lot of room for performance improvements in kwin. For my Radeon based setups, the open source driver runs much, much better on Compiz than kwin. ![]()
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