How to enable compositing support in KDE4.2?

configure desktop (Desktop - System Settings) → Desktop
Message indicates:
Compositing is not supported on your system.
Required X extensions (XComposite and XDamage) are not available.

I can’t find XComposite or XDamage as a package to install with Software Management.

Enabled repositories include:
Index of /repositories/X11:/Compiz/openSUSE_11.1
Index of /repositories/KDE:/KDE4:/Factory:/Desktop/openSUSE_11.1

Thank you in advance for your help.

in /etc/X11/xorg.conf add the lines below at the bottom of the file then restart the X server by logging out and logging in again

Section "Extensions"
    Option         "Composite" "Enable"

Thanks microchip8. It worked.>:(

Sorry. I don’t know how the frowning icon got there. Here’s a few smiles.
:slight_smile: :slight_smile:

How do I find or get in /etc/X11/xorg.conf?

How do I find or get in /etc/X11/xorg.conf?

open terminal and become root and type:

vi /etc/X11/xorg.conf

for vi editor:
i-insert data to file
esc(key)- to exit writing mode
press shift and hit Z twice to save the file.


hit alt+f2 to start krunner and then type:

kwrite /etc/X11/xorg.conf

To view the file without making changes (even if you try to make a change it will fail since the xorg.conf can only be changed by root.)

kdesu kwrite /etc/X11/xorg.conf

If you want to make changes.

This is if you prefer kwrite.

Take Care,


Had same issue. This fixed it. Thanks!

I can’t find /etc/X11/xorg.conf.There is a file named xorg.conf.install.
what should I do now?


Please do not reuse old threads. Start a new one, be very clear in describing your problem. For now: on 11.2 an xorg.conf is not always needed. For desktop effects you may need a 3rd party videocard driver. Please state as much info as you can, see my signature. Include brand and model of videocard.

What video card do you have and did you install the proprietary driver from the maker?

In general you will need the driver from the maker to do full 3D acceleration needed for fancy graphic effects. Also why compiz on KDE? Are the built in KDE supplied effects not enough for you?