Activate the 3rd Video Port


  1. Posts : 625
    Windows 10 Pro x64
       #1

    Activate the 3rd Video Port


    Ok, so I have this video card. It's AMD Radeon R9 200 Series.

    I have 2 monitors connected using the HDMI port and the DVI port (both in red). I want to add a third monitor (BLUE), but I don't know how to activate that port. Can someone help?

    Activate the 3rd Video Port-untitled.png
      My Computers


  2. Posts : 679
    Windows 10
       #2

    Right, I see you are trying to get 3 screens working at the same time. Its easy once you know how.

    Have you got a spare VGA lead with DVI to VGA adapter? If you have then brilliant.

    My first connection would be the main screen which you are attempting to use. So get a VGA adapter hooked up to the main first screen, using the DVI to VGA adapter, connected to the port marked vga. If the monitor allows this set the first screen to vga. You would normally set this resolution at about 1366x768. VGA can handle this so not a problem. Get this setup first without any 2nd screens connected. Reboot machine.

    Next connection is a DVI to DVI/HDMI to the next screen you are using. Keep this at the same resolution or there abouts as the first screen. So whatever resolution you want x768. Edit: Keep the vertical the same.

    Next connection for a third screen would ideally be an active connection now. The 3rd display would connect to a 'Display Port' or mini Display Port.

    Thats 3 individual displays. VGA - DVI - Display Port. Try it that way

    Edit Edit:: I have noticed that if you want any power management settings to work with a HDTV and 3 screens, that the main HDTV be connected through the VGA port as power management works properly that way. Proper PC power management doesnt seem available on any of my 3 HDTV's unless i connect through the old school VGA port. Then the TV works exactly the same as a monitor
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  3. Posts : 625
    Windows 10 Pro x64
    Thread Starter
       #3

    Pluginz said:
    Right, I see you are trying to get 3 screens working at the same time. Its easy once you know how.

    Have you got a spare VGA lead with DVI to VGA adapter? If you have then brilliant.

    My first connection would be the main screen which you are attempting to use. So get a VGA adapter hooked up to the main first screen, using the DVI to VGA adapter, connected to the port marked vga. If the monitor allows this set the first screen to vga. You would normally set this resolution at about 1366x768. VGA can handle this so not a problem. Get this setup first without any 2nd screens connected. Reboot machine.

    Next connection is a DVI to DVI/HDMI to the next screen you are using. Keep this at the same resolution or there abouts as the first screen. So whatever resolution you want x768. Edit: Keep the vertical the same.

    Next connection for a third screen would ideally be an active connection now. The 3rd display would connect to a 'Display Port' or mini Display Port.

    Thats 3 individual displays. VGA - DVI - Display Port. Try it that way

    Edit Edit:: I have noticed that if you want any power management settings to work with a HDTV and 3 screens, that the main HDTV be connected through the VGA port as power management works properly that way. Proper PC power management doesnt seem available on any of my 3 HDTV's unless i connect through the old school VGA port. Then the TV works exactly the same as a monitor
    @Pluginz

    I have no idea why I'm just now seeing this reply. I'm going to try this later tonight after church.
      My Computers


  4. Posts : 4,453
    Win 11 Pro 22000.708
       #4

    A past from the blast.

    I don't have such a card, but a littel Web searching indicates that for 3 monitors, one of the ports must be DisplayPort. You may have to use a miniDP to DVI adapter.
      My Computers


  5. Posts : 14,144
    Win10 Pro and Home, Win11 Pro and Home, Win7, Linux Mint
       #5

    RainbowPride said:
    I have no idea why I'm just now seeing this reply. I'm going to try this later tonight after church.
    Did you remember to Subscribe to your post? Usually get E-Mails when someone replies to your posts.
      My Computers


  6. Posts : 625
    Windows 10 Pro x64
    Thread Starter
       #6

    Berton said:
    Did you remember to Subscribe to your post? Usually get E-Mails when someone replies to your posts.
    Nope. I don't like doing that because my phone blows up. . lol
      My Computers


  7. Posts : 625
    Windows 10 Pro x64
    Thread Starter
       #7

    bobkn said:
    A past from the blast.

    I don't have such a card, but a littel Web searching indicates that for 3 monitors, one of the ports must be DisplayPort. You may have to use a miniDP to DVI adapter.
    If that's the case, then I will have to wait, because I do not have the money to get one of those until next Friday. Unless someone wants to donate me one. . lol
      My Computers


  8. Posts : 625
    Windows 10 Pro x64
    Thread Starter
       #8

    @Pluginz

    So here is what I have.

    Monitor 1 - MiniDP/VGA Adapter to VGA

    Monitor 2 - DVI to DVI/HDMI Adapter

    Monitor 3 - (which is my actual TV) - using just an HDMI video cable.


    Everything is working, but I have one small problem. Monitor one has squigly lines in it. I've trying lowering the refresh rate as well, but it isn't working. None of the other displays are doing this. Is this dangerous for my video card or monitor? It's annoying.
      My Computers


  9. Posts : 458
    Windows 10 Pro
       #9

    Try lowering the resolution a little bit on all 3 monitors until they can all show up properly, then gradually try to bump them up a little at a time. I suspect that the combined resolutions is too much for the card to handle properly without showing signs of stress.
      My Computers


  10. Posts : 679
    Windows 10
       #10

    Sounds like scan lines, something the old ATI driver tools used to have.

    If you can find the pixel rate settings, normally in additional settings. So for VGA as the primary i would set and use RGB mode for sure. This limits the range of contrast compared to a digital format and creates a more colourful mix. Try RGB mode for all 3 screens to start with.
    With your 2nd or 3rd screen which is using the dvi or hdmi, you could try the component pixel range which is more suited to that type of connection. Keep refresh rate and ratio the same but play about with each monitors pixel rate
    Good luck bud

      My Computer


 

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