Installation

First we install compiz-fusion with:

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$su password: enter your root password (default: paldo) upkg-install compiz-fusion

Then we backup our xorg.conf with:

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cp /etc/X11/xorg.conf /etc/X11/xorg.conf.withoutcompiz-fusion

Next step is to edit the xorg.conf-file.

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gedit /etc/X11/xorg.conf

In Screen-Section:

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DefaultDepth 24

Under Section "Module", make sure that the following lines are included, and add them if they are not:

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Load "dri" Load "dbe" Load "glx"

If there is no Option "XAANoOffscreenPixmaps". Add it to the Device-Section:

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Section "Device" ## no change Identifier ##no change Driver ##no change,whatever this reads is fine Option "XAANoOffscreenPixmaps" ## add this line!!!! Screen 0 ##no chnge EndSection

Tip:

For an Nvidia card:

(I needed to add Option "AddARGBGLXVisuals" "True" to the Device section as well, otherwise I got "no GLXFBConfig for depth 32" errors. This is on a GeForce4 MX 440, also needed on GeForce FX 5600).

And finally, add the following to the bottom of the file, unless it already exists elsewhere:

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Section "Extensions" Option "Composite" "Enable" EndSection

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Section "DRI" Mode 0666 EndSection

Then restart your X-Server with CTRL+ALT+BACKSPACE

If there is any error restore your Xorg.conf with:

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cp /etc/X11/xorg.conf.withoutcompiz-fusion /etc/X11/xorg.conf

If there wasn't an error you can start compiz-fusion with:

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compiz-manager

Configuration

We will need to create two new files: A startup script and an X session file.

To create the session shell script, open up your favourite text editor (eg gedit) as Root and create a new script named startcompiz-fusion.sh:

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$su password: enter your root password # gedit /usr/bin/startcompiz-fusion.sh

Now enter followed lines and save the file:

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#!/bin/sh compiz-manager sleep 4 exec gnome-session

Alternatively, the last line can read

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exec dbus-launch --exit-with-session gnome-session

Now you need to make the script executable:

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chmod a+x /usr/bin/startcompiz-fusion.sh

To create the session, create the file /usr/share/xsessions/compiz-fusion.desktop, and give it the following contents in a text editor (again, as root):

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[Desktop Entry] Encoding=UTF-8 Name=Beryl Exec=/usr/bin/startcompiz-fusion.sh Icon= Type=Application

Now when GDM starts, you should have a session called Beryl available for selection; if you log into this session, compiz-fusion will run (via the startcompiz-fusion.sh script) and load GNOME for you. Logging into your normal session will give you a standard, un-accelerated desktop for troubleshooting or running programs which don't play nicely with AIGLX.

In my pc, beryl goes slow, but i found a little trick to change this :P
in Beryl Manager...

Main Tab ---> General Options

Now uncheck the following:

Sync to Vblank
Detect Refresh Rate

and change your:

Refresh Rate = 200

source :http://tvease.net/wiki/index.php?title=Tweak_beryl_for_speed

I updated the thread from beryl to compiz-fusion.