Getting back on topic, maybe the following helps some people to get around the pitfalls when running compiz.
Apparently, the Debian lenny/testing version of compiz (currently 0.5.2) ships without activation of the plugins required for all the compiz whiz-bang (see bug report http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=440095).
Therefore, it is necessary to activate the plugings manually, e.g. using gconf (gconf-editor). To do so follow these instructions:
http://bgoglin.livejournal.com/11253.html, be sure to get the order of the plugins right.
After that, start compiz from the command line using the usual
That should do it. It worked for me using a Radeon 350(Radeon 9800 Pro) and the 8.42.3 fglrx driver. Activating the plugins got rid of the problem of missing window decorations after starting compiz and the error messages
GLX_EXT_texture_from_pixmap is not available with direct rendering.
Make sure you have compiz-kde or compiz-gnome installed, they do the actual decorating of the windows.
compiz.real (core) - Fatal: GLX_EXT_texture_from_pixmap is missing
I found a good explanation on how to use the compiz features at http://www.clip.dia.fi.upm.es/~cocho...dex.php/Compiz .