To rular Compiz-Fusion (Beryl developments) have to do the following:
Edit the file "/ etc/X11/xorg.conf"
$ sudo gedit / etc/X11/xorg.conf and add
the end the following excerpt:
Section "Extensions"
Option "Composite" "1" EndSection
If you already had something similar but instead of "1" Composite, had "0" (ie, the composition off), turn it on by putting a "1" to make it as above.
The part of Xorg is now complete.
Now, we must tell Compiz-Fusion that your drivers are able to work with AIGLX. You have to put your drivers on the white list. Before, the driver "fglrx" could not stand the effects of composition and how the new drivers have not yet considered stable, they remain on the blacklist of Compiz-Fusion.
To change this, edit "/ etc / xdg / compiz / compiz-manager"
$ sudo gedit / etc / xdg / compiz / compiz-manager and walk
following:
WhiteList = "fglrx"
If the file does not exist, believe it and go.
Now, once you restart the X, you should be able to use the desktop effects with no problem.
Ctrl + Alt + BACKSPACE (delete key: P)
PS You better configure your Compiz-Fusion already installed from a terminal like the following:
$ sudo aptitude install compizconfig-settings-manager
saludoss !