Today I install beryl succeed.

Install Beryl in just a few easy steps for Debian Etch

• Install the libxcomposite1 package from apt.

  # apt-get install libxcomposite1

• Make sure these parameters are present at the end of /etc/X11/xorg.conf

Section "Extensions"

   Option "Composite" "Enable"

EndSection

• Add the gpg key :

wget -O - | sudo apt-key add -

• Edit your /etc/apt/sources.list file

Packages are available from . To enable this repository, add the following two lines to your /etc/apt/sources.list:

deb etch main

deb-src etch main

Then run:

  # apt-get update

Notice this is for Etch and not the "testing" release. Now that Etch is the Debian stable release, Lenny is the new Testing version. Please be sure you have etch named in your sources.list file and not testing.

• Download and install the packages:

  # apt-get install beryl beryl-core beryl-dev \

beryl-manager beryl-plugins beryl-plugins-data \

beryl-settings emerald emerald-themes