Windows 10: Can't duplicate display on HDMI and VGA outputs (ATI Radeon HD4200)

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  1.    29 Sep 2017 #11

    That's an interesting idea. There is a DVI port on the graphics card. I'll see if I can get hold of a DVI to component video cable to try it out (the target for the 2nd display only has component, S-Video or composite inputs).
      My ComputerSystem Spec


  2. Posts : 1,758
    Win 10 X64 Pro 1803 17134.228
       03 Oct 2017 #12

    itm said: View Post
    That's an interesting idea. There is a DVI port on the graphics card. I'll see if I can get hold of a DVI to component video cable to try it out (the target for the 2nd display only has component, S-Video or composite inputs).
    I'm not very familiar with component video. The analog output of a DVI-I port (both analog and digital) can be sent to a VGA monitor using a passive adapter. It's RGB. Component video generally isn't RGB; it uses chrominance and luminance information.

    It may be possible to cause the graphics card to output component video as the analog output of a DVI port, but I'm unaware of that.

    There are active adapters to take HDMI to component. If you don't have an HDMI output, you could combine a passive DVI to HDMI with HDMI to component. (Sounds like a kludge, I know.)
      My ComputersSystem Spec

  3.    03 Oct 2017 #13

    It turns out that the graphics card cannot output via DVI and HDMI simultaneously - it's either one or the other :0(
      My ComputerSystem Spec

  4.    03 Oct 2017 #14

    itm said: View Post
    It turns out that the graphics card cannot output via DVI and HDMI simultaneously - it's either one or the other :0(
    That happens some times. The two sockets are actually wired to the same video card output. It saves you from having to use an adapter. It's a convenience thing. Or so they claim. I'm not a big fan of that type of setup myself. It just confuses things IMHO.

    Keep in mind though, you need DVI-I to get an analog signal out of it. DVI-D (Digital only) won't provide the signals needed to get an analog signal with a passive adapter.
      My ComputerSystem Spec


 
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