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Dual Screen

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  • 10-07-2011 10:49pm
    #1
    ninty9er
    Registered Users Posts: 9,366 ✭✭✭


    Hey guys,

    I have 2 monitors on my desktop, just the usual TFT type. I have a VGA splitter connecting both to my CPU, but both display the same thing and the CPU is only recognising one monitor.

    What am I doing wrong.

    I'm running Windows 7.


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    #2
    Paulw
    Moderators, Society & Culture Moderators Posts: 13,381 Mod ✭✭✭✭Paulw


    You can't use a splitter.

    You would need to have two connections on your video card (vga, DVI, HDMI)

    One connection means the PC only sees one monitor.


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    #3
    ninty9er
    Registered Users Posts: 9,366 ✭✭✭ninty9er


    Microsoft support made it sound easy, but had no answer to the issue encountered


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    #4
    Nichololas
    Registered Users Posts: 1,186 ✭✭✭Nichololas


    ninty9er wrote: »
    Microsoft support made it sound easy, but had no answer to the issue encountered

    Google search > microsoft support. Seriously.

    And as Paulw said, a VGA splitter is akin to an audiojack splitter - it just splits the signal. To get actual dual monitor output you need 2 video outputs on your PC, although they dont need to be the same ones, so you need 2 VGA/DVI/HDMI ports at the very least. Doesn't matter what kind of monitors you have (VGA I guess), because there are VGA adapters for DVI and HDMI outputs, although you won't get HDMI video quality if you put a VGA adapter on it, etc.


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    #5
    Big Lar
    Registered Users Posts: 1,421 ✭✭✭Big Lar


    Yeah you need two output ports in your card, something like below


    07.11.2011-13.44.41.png


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    #6
    Paulw
    Moderators, Society & Culture Moderators Posts: 13,381 Mod ✭✭✭✭Paulw


    Surley wrote: »
    Are you sure? Sitting at my PC at work, two monitors and they use a splitter. It did require a new card installed on the PC but definitely using a VGA splitter.

    Why a new card?

    So, you have two monitors going to a single interface on the card in your PC?

    I've two monitors connected to my PC in work - one to vga port and the other to the dvi port. The computer sees two separate ports and monitors, so I can properly dual screen.


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    #7
    Giblet
    Registered Users Posts: 11,977 ✭✭✭✭Giblet


    Those splitters use a custom dual DVI splitter.


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    #8
    ScumLord
    Registered Users Posts: 28,789 ✭✭✭✭ScumLord


    I don't think windows could recognise two monitors plugged into the one output and if it did I'd imagine you'd have to half the data between them restricting the quality of the picture.

    The vast majority of Graphics cards that have been around for the last few years have at least two separate outputs to enable them to service old VGA monitors and new DVI monitors so it won't be hard or expensive to find a graphics card that does what you want, newer cards can work with up to 6 monitors.


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