Installing Beryl (Mepis 7.0)

Firstly, add the following lines to your repo's by going to /etc/apt/sources.list and opening with "Kate".

deb http://debian.beryl-project.org/ etch main
deb-src http://debian.beryl-project.org/ etch main

Then download the gpg key by typing into a console.

wget -O - http://debian.beryl-project.org/root@lupine.me.uk.gpg | sudo apt-key add -

Reload Synaptic or apt-get, then choose all Beryl packages, apart from beryl-dev, and install.

N.B. See link on fixing graphical glitches in Beryl after installation.

http://my-linux-installation-files.blogspot.com/search/label/Beryl

Beryl - Fixing Graphical Dropouts After Installation

Add the following line to /etc/X11/xorg.conf

Option "XAANoOffscreenPixmaps"

The edited file should read.....

Section "Device"
Identifier "Card0"
Driver "nvidia"
BoardName "unknown"
Option "XAANoOffscreenPixmaps"

ANOTHER SOLUTION:

Now you need to edit the /etc/X11/xorg.conf file and do the following changes...

kate /etc/X11/xorg.conf

... then add these two lines under the “Screen” section....

Option “XAANoOffscreenPixmaps”
Option “AddARGBGLXVisuals” “true”

... then add these lines under “Device”...

Option “AllowGLXWithComposite” “true”

Option “RenderAccel” “true”

...then add this line under “Server Layout”...

Option “AIGLX” “on”

Finally at the end of the file add these lines...

Section “Extensions”
Option “Composite” “Enable”
EndSection

Now save the file and exit.

You need to reboot Mepis and now Beryl and nVidia with work.