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I'm trying to configure my dual-monitor setup.
Some background information:
I have just fresh/clean-installed Ubuntu 7.10 Gutsy Gibbon. I was previously using Ubuntu 7.04 Feisty Fawn, where I was able to get a dual monitor (side-by-side) setup working by tweaking the xorg.conf.
Hi, I am having similar issues with xrandr. I am running Gutsy Gibbon with and ATI Radeon 9500 Pro using the open ati driver. So far I have only been able to get the other monitor to clone my main one. I am using two Dell 19" CRT's, one of which is hooked up to the DVI port with a VGA converter. I made a custom modeline for 960x1200 @ 75 so that both screens would be able to run in a big desktop config.
You have to edit xorg.conf in this case in one small way. If you read this post’s ‘Extended Desktop over Two Displays’ section you will see instructions for adding a ‘Virtual’ line to xorg.conf — that’s all you have to do.
From ‘Extended Desktop over Two Displays’ section:
(Say my laptop display is 1024×768 and my external display to the right is 1600×1200.)
This requires in my case one tweak to the xorg.conf file on a Radeon 7500 using the ‘radeon’ driver. In the Screen section by default you should see something like:
The addition is the Virtual line where the size is the maximum width of the displays added together by the height of the biggest resolution height. So in this case the width is 1024+1600 = 2624. Between my laptop and external screen, the latter has the highest vertical resolution so that’s 1200 (instead of 768.)As another example I have a 1400×1050 laptop screen and a 1440×900 external screen so:
* Width: 1400 + 1440 = 2840
* Height: (1050 is larger than 900 so…) = 1050
* So the line to insert is: Virtual 2840×1050
After sorting out the xorg.conf file from the command line after restarting the X Server (Ctrl+Alt+Backspace, Log Out or Reboot) enter:
Thanks, after 2 days of digging this solved my problem!
With this info at hand it is easy, I just let sax2 set up the dual display with xinerama. Afterwards modify the xorg.conf and add the "Virtual 2560 1024" line, and it all works. Although when you touch screen resolution the system switch to clone mode, and you must restart x. It is annoying, but at least works.
Last year i thought i solved this problem forever, apparently not.
I have to configure dual head display on a new machine with nvidia G92 card and 2 Dell SE198WFP monitors. I am tweaking xorg on Suse 11.0 for a day, but just doesn't want to work. Here is my current xorg.conf: