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"Monitor A": Samsung 940N 19" LCD [VGA connection]
"Monitor B": Samsung 940N 19" LCD [VGA connection]
VGA card: Nvidia Geforce GT220 [has 1 VGA, 1 HDMI, 1 DVI]
So I'm using a "DVI to VGA" converter.

Under Windows7: The OS recognizes the 1280x1024 native resolution in both monitors, hurray!

Under Ubuntu 11.04: The OS recognizes one of the monitors ("Monitor A") as a Samsung, OK! (resolution is good too!). BUT: the other monitor ("Monitor B") is recognized as "Unknown", and uses 1024*768. (the "other" monitor is the one that's with a DVI to VGA converter - "Monitor B"). I installed the NVIDIA driver too, but it still recognizes the second monitor - "Monitor B" (with the DVI to VGA converter) as it would has a maximum resolution of 1024*768.

Question: How could I "tell" Ubuntu to use the "other" monitor - "Monitor B" with 1280*1024 (the native resolution)???

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possible duplicate of askubuntu.com/questions/13783/… –  user606723 Aug 3 '11 at 16:48
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1 Answer 1

up vote 2 down vote accepted

Replacing the DVI converter solved the problem.

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how did you manage that then? Ps could you mark your post as solved please :) –  andybleaden Aug 5 '11 at 9:32
    
we though it will be an OS issue because it worked under Windows, and didn't worked under Ubuntu.... but we bought another DVI to VGA converter and the problem is solved... :D –  LanceBaynes Aug 5 '11 at 13:00
    
i still can accept my own anser, it says it need 3 more hours to allow accepting :\ –  LanceBaynes Aug 5 '11 at 13:01
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