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Hello. I have on my work machine RHEL6. I have a Radeon X1300 installed. It runs 2 monitors. I wanted to add a third monitor, but my Radeon only supports ...
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  1. #1
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    2 different graphics cards to drive 3 monitors?


    Hello. I have on my work machine RHEL6. I have a Radeon X1300 installed. It runs 2 monitors. I wanted to add a third monitor, but my Radeon only supports 2. So I purchased a crummy PCI nVidia card (a Quadro NVS 280) for $11 and threw that in my machine.

    Now when I run lspci | grep VGA I get


    01:00.0 VGA compatible controller: ATI Technologies Inc RV516 [Radeon X1300/X1550 Series]
    04:00.0 VGA compatible controller: nVidia Corporation NV34GL [Quadro NVS 280 PCI] (rev a1)


    However my third monitor just says Red Hat Enterprise Linux 6 (i.e. the bootup logo) and so I have no idea how to extend my desktop onto it.

    Anyone have any ideas?

  2. #2
    Linux Guru Rubberman's Avatar
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    You need to do several things.

    1. Install the proprietary nVidia driver.
    2. Modify your xorg.conf file to incorporate both drivers and all the display devices.

    In any case, this situation would be simpler (if more expensive) if you just installed two sli-capable video boards, linked together with SLI. Then the system would see them as one video device, with up to 4 display outputs.
    Sometimes, real fast is almost as good as real time.
    Just remember, Semper Gumbi - always be flexible!

  3. #3
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    Quote Originally Posted by Rubberman View Post
    You need to do several things.

    1. Install the proprietary nVidia driver.
    2. Modify your xorg.conf file to incorporate both drivers and all the display devices.

    In any case, this situation would be simpler (if more expensive) if you just installed two sli-capable video boards, linked together with SLI. Then the system would see them as one video device, with up to 4 display outputs.
    The problem is, my work machine only has 1 PCI Express slot, and then a couple of PCI slots. I don't know if nVidia makes any SLI capable PCI cards. Most cards are PCI Express these days.

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