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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    Arcade Multisync Monitor support (Wells Gardner, Betson, etc).

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    monitorfrequencyvga
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    • T
      TerrapinM
      last edited by

      I have an existing Betson multisync arcade monitor (also known as Kortek KT-2914). This is extremely similar to the Wells Gardener D9400. They support 640x480 and a mide range of low frequencies. I took the default 4.2 RetroPi image, and used an HDMI to VGA converter (https://www.amazon.com/gp/product/B01KZ2GDLM/) to connect to the monitor (which has a VGA connection). The monitor reports the signal out of range. Here is the error that flashes:

      HF: 30-40 KHz
      VF: 47-160 Hz

      48.3 KHz 60 Hz

      So the horizontal frequency is out of range. I connected the VGA to a regular monitor and is displayed correctly.

      On other builds I've used an ArcadeVGA card (https://www.ultimarc.com/avgainf.html) which limits the frequencies it outputs. Is there a way to limit RetroPi so this doesn't output in that frequency?

      Is anyone using one of these types of monitors?

      M 1 Reply Last reply Reply Quote 0
      • M
        maxriptide @TerrapinM
        last edited by

        @TerrapinM
        You should force 640x480 in config.txt.
        Try:
        hdmi_group=1
        hdmi_mode=1

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        • T
          TerrapinM @maxriptide
          last edited by

          @maxriptide Thanks for the suggestion. Worked like a charm!

          1 Reply Last reply Reply Quote 0
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