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Following the WoLpH's recommendation I am looking forward to enable Xinerama to set up 2 monitors to be 2 separate Gnome virtual desktops instead of one big.

But the thing I worry about is how to set it up correctly and not to harm Ubuntu's "Monitor Preferences" application, panel indicator applet or anything else.

If you have had any experience with Xinerama, would you be so kind to share?

I use Ubuntu 10.10 on my Toshiba L10 laptop with Intel 82852/855GM onboard card. And I switch (which, AFAIK, can be an inconvenience with Cinerama) monitor configurations (detach all monitors but a laptop's built-in panel, attach monitors with different resolutions) pretty often (sometimes many times a day).

As Ubuntu was unable to detect my graphics, I was to create Xorg.conf already, which has solved most of my graphics problems.

The last time I have had experience with writing Xorg.conf manually and setting up Xinerama was about 7 years ago, with Slackware and Matrox MGA G550 card. And I definitely wouldn't like to edit Xorg.conf every time I need to switch my monitors configuration.

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It'd help to see your xorg.conf and Xorg.0.log... –  Bryce Oct 6 '10 at 19:50

2 Answers 2

up vote 1 down vote accepted

In the ServerLayout section in your xorg.conf you should add something like this:

Section "ServerLayout"
    Option "Xinerama" "on"
    Option "Clone" "off"
EndSection

That should be enough to make sure xinerama works properly. If you don't have it already, you should add something like this aswell:

Section "ServerLayout"
    Screen 0 "first-screen"
    Screen 1 "second-screen" RightOf "first-screen"
EndSection
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Sorry to say, but Xinerama no longer works on the -intel driver, since the Feisty/Gutsy timeframe when the Intel developers introduced XRandr.

Maybe if you explain what you're trying to achieve with the dual displays, someone could suggest an alternative approach.

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You may find these links helpful for configuring dual head on intel: intellinuxgraphics.org/dualhead.html and thinkwiki.org/wiki/Xorg_RandR_1.2 –  Bryce Oct 6 '10 at 19:55
    
As I've said, I am trying to acheive 2 monitors to be 2 separate workspaces, so that screens on "workspace switcher" panel applet will represent 2 different physical screens. –  Ivan Oct 7 '10 at 11:07

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