Connect 2 VGA monitors for dual screen

godlessendeavor · Apr 23, 2014

I'm trying to connect 2 VGA monitors to my computer. My graphic card is an Nvidia Geforce GTX660 and I'm working with Ubuntu 12.04.

I have one connector DVI-I to VGA and one DVI-D to VGA to connect the 2 monitors to the DVI ports of my graphics card. In the Nvidia X Server settings I can see that both monitors are enabled. But one of them is not running. Both monitors are running ok when plugged solely to the DVI-I connection of the graphics card. The monitors have different resolution, 1600x900 and 1280x1024 but the second one is the one that is not running (this is connected to the DVI-D port)

I know it can be drivers or even hardware related but I would like to get a clue on how to investigate this further.

Thanks in advance

Eduello · Apr 23, 2014

There is no such thing as DVI-D to VGA, you need an active converter for that. DVI-D uses a digital signal and VGA analog, DVI-I has both. That's why the displays only work in the DVI-I slot.

godlessendeavor · Apr 23, 2014

Eduello :

Would it be the same for the HDMI, and Displayport? I mean, would I need active adapters for all of them?

Eduello · Apr 23, 2014

godlessendeavor :

I don't know about DisplayPort, but it's definitely not analog. HDMI is digital as well.

Digital>analog converters tend to be expensive and there is no way of running two analog monitors on your GPU without one.

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Connect 2 VGA monitors for dual screen

godlessendeavor

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godlessendeavor

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Eduello

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