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Old 06-14-10, 03:39 AM   #13
silicone hoses
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Default Re: Options for adding a third monitor

Originally Posted by Roman_Gertz View Post
Hey, I have a Windows 7 operating system running on Core 2 Duo processor.. 2 monitors can be used, however, am also wondering if this can be used for laptops at the same time.. Any ideas on how I could work on this?
Hi dear, yes you can do that.. However, we think that you have come at the wrong forum this time.. This is for Linux - but if you have more questions about it, just please feel free to read the rules and find the appropriate thread or start a new one, alright?
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Old 06-14-10, 08:37 AM   #14
Execute Systems
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Default Re: Options for adding a third monitor

To make the timing settings effective, you need to add the following line to the "Screen" section of your xorg.file:
I am sorry, but where can I do this? I apologize for being a newbie, but I just can't simply find/understand what this means..
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Old 09-30-10, 08:21 AM   #15
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Default Re: Options for adding a third monitor


I have the following set up:
03:00.0 VGA compatible controller: nVidia Corporation G92 [GeForce 9800 GTX] (rev a2)
04:00.0 VGA compatible controller: nVidia Corporation G92 [GeForce 9800 GTX] (rev a2)
2 the same monitors (1920x1200) connected to first VGA (via DVI),
1 monitor (1024x768) connected to second VGA (via VGA cable with VGA->DVI).

I'd like to have the first two monitors in TwinView, and the third available in anyway.

Right now I have Xinerama enabled on all monitors and "Separate X screen" enabled in nvidia-settings. It would be ok, but the overall GUI performance is bad, moving windows (not only web browsers, also konsole) is slow.
When I disconnect the third monitor and turn on TwinView on the first two ones the GUI performance is good.
I just want to use the third monitor in such a way that the first two monitors work the same.
I don't need Xinerama at all (as I see it is causing all the trouble), however a possibility to move windows between 1st and 2nd monitor is a must.

Do you have any ideas how to set this up?
Or maybe it's not possible?

How about running another instance of Xorg for the third monitor, is it somehow possible?
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Old 09-30-10, 04:30 PM   #16
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Default Re: Options for adding a third monitor

Originally Posted by wysek View Post
Do you have any ideas how to set this up?
You have several options:

* You could configure the first card in twinview mode as Screen 0
and the second card as Screen 1 and *not* applying Xinerama.
Depending on the WindowManager, it should be possible to
have your desktop (including effects) on Screen 0 and use
Screen 1 separately (you won't be able to drag windows between
the two logical screens). The drawback of this setup is that
windows on Screen 0 will maximize to both LCDs.
Please note that I didn't tried out such a setup for quite some time,
so I have no idea if this still works.

* You can create a multi-seat setup where you could start a second
X-Server for the the second card. You need a separate keyboard
and mouse for this, but that might not be a drawback, depending
on your requirements.

* You could use a TH2G to operate the two 1920x1200 LCDs from
one DVI-DL output (TH2G works in dual head mode in this case).
Then you can connect the other LCD to the second DVI output of
the card (so you will only use *one* card in your system). Drawback:
those TH2Gs are not exactly cheap.


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