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Leonid Fedotov2014-08-07 16:51:56
System administration
Leonid Fedotov, 2014-08-07 16:51:56

Why can't 3 monitors work at the same time?

I have been using two monitors on a GeForce 9800 GT video card (VGA, DVI, HDMI) for a long time. The other day a third monitor appeared. On other PCs it works great, but on a work computer it just shuts down. What is most interesting, Windows perfectly sees all 3 monitors, allows them to be configured separately, but only allows two monitors to work at the same time, and the third becomes turned off. If I make a new monitor the main one, it starts working, and one of the other monitors goes into disabled mode. I don’t understand what could be the snag - I ask for help from professionals :D
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3 answer(s)
D
Dmitry, 2014-08-07
@iLeonidze

The 9800 only supports 2 monitors at the same time.

Y
Yaroslav Golubev, 2014-08-08
@Linebrell

Faced the same problem at home. The solution was to connect the 3rd monitor through the built-in video card, it works and integrates with the rest without problems.
As I understand it, the problem is that despite the 3 physical outputs, the video card itself supports 2 independent channels, one of which is only a plug for 2 types of outputs.

3
386DX, 2014-08-07
@386DX

Hello, can you please tell me if it is possible to connect 3 monitors to the GeForce 9800GT at the same time?
No. You can only connect two monitors. The G92 has two RAM-DACs.
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