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.