This is very simple actually. It worked perfectly for me.
After installing Feisty, make sure your system is completely updated.
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sudo apt-get update
sudo apt-get upgrade
sudo apt-get dist-upgrade
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System >> Administration >> Restricted Drivers Manager
and enable your ATI driver.
Reboot the computer and make sure fglrx loaded correctly. There should be an icon in the notification area telling you that you have restricted modules loaded. You may also need to add this to your xorg.conf file, I don't remember adding it by hand, I'm pretty sure the restricted modules manager did it for me but I'll put it here just in case.
Code:
Section "Extensions"
Option "Composite" "0"
EndSection
Now we need to install XGL.
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sudo apt-get install xserver-xgl
XGL won't load on its own so we need to write a few scripts to have it start.
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sudo gedit /usr/local/bin/startxgl.sh
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#!/bin/sh
Xgl :1 -fullscreen -ac -accel xv:pbuffer -accel glx:pbuffer &
DISPLAY=:1
exec dbus-launch --exit-with-session gnome-session
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#!/bin/sh
Xgl :1 -fullscreen -ac -accel xv:pbuffer -accel glx:pbuffer &
DISPLAY=:1
cookie="$(xauth -i nextract - :0 | cut -d ' ' -f 9)"
xauth -i add :1 . "$cookie"
exec dbus-launch --exit-with-session gnome-session
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sudo chmod a+x /usr/local/bin/startxgl.sh
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sudo gedit /usr/share/xsessions/xgl.desktop
put this test into that file
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[Desktop Entry]
Encoding=UTF-8
Name=GNOME with XGL
Comment=
Exec=/usr/local/bin/startxgl.sh
Icon=
Type=Application
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sudo chmod a+x /usr/share/xsessions/xgl.desktop
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System >> Administration >> Software sources
now disable the universe repo and reload.
Now we need to add the beryl repo.
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wget http://ubuntu.beryl-project.org/root@lupine.me.uk.gpg -O- | sudo apt-key add -
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deb http://ubuntu.beryl-project.org/ feisty main
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sudo apt-get install beryl emerald-themes
Code:
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beryl-manager