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so far I found out that I need to configure the Xorg.conf to have DualView on my monitor. At this moment the screen is just duplicated. My Graphics Card is Matrox G550.

When trying

jannis@Ariel:/$ sudo Xorg -configure

Fatal server error: Server is already active for display 0 If this server is no longer running, remove /tmp/.X0-lock and start again.

Please consult the The X.Org Foundation support at for help.

ddxSigGiveUp: Closing log

Also /etc/X11/xorg.conf doesn't exist..

Since I allready tried it a several months ago, lost my X configuration and needed to reinstall the OS I am terrified it can happen again.

Does anyone know what to do? Is there anyway to store the current/running configuration and restore it afterwards?

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up vote 1 down vote accepted

You have to stop xserver first. The procedure goes something like this:

  1. Switch to tty1 by pressing ctrl-alt-f1

  2. Become root: sudo -i.

  3. Stop xserver: service gdm stop.

  4. Run Xorg -configure.

A config file will be written into /root/ Copy that to the proper location.

  1. Copying: cp /root/ /etc/X11/xorg.conf

  2. Restart xserver: service gdm start

  3. Exit from root: exit

  4. Return to tty7: ctrl-alt-f7.

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thanks for that response! Will my current(working) configuration be modified or changed? Will everything work like it does now? – Jannis M May 21 '12 at 13:26
The above steps will create an xorg.conf config file. Whether it will work, or how well, I don't know. In case it breaks something, just remove or rename /etc/X11/xorg.conf. As for modifying, there was no xorg.conf, and so nothing to modify. – mikewhatever May 21 '12 at 14:37

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