I am trying to pass audio from a laptop to a desktop via a headphone jack from the laptop to a line in on the desktop but it provides constant static. I have tried two different aux cords (new). I currently think I might need an USB to Audio Jack Sound Card Adapter but don’t want to buy this too and have to return both if it does not work. Do I need it to be a line out and not a “Headphone Jack” or a sound card?

Thanks

  • MrZee@lemm.eeEnglish
    1·
    10 months ago

    Just in case: what about my question (1)? You are plugged in to a line in and not a mic in, right?

    I’m pretty sure ground loop can’t occur on a laptop when it isn’t plugged in to the wall for power. From a quick search, this seems to confirm that:

    Power Supply

    A low quality power supply unit can lead to ground loop noise, particularly on laptops. Disconnect your computer from your power supply so that it runs on battery power and verify if this resolves the issue. If you are going to use a replacement power supply unit, make sure that its specifications meet the ones required by your computer in order to avoid permanent damage.

    I’m seeing that, beyond ground loop, noise like this is probably some other form of EMI (electromagnetic interference), often from bad capacitors. I don’t really have experience there.

    I’m sure enough that the ground loop isolator won’t work that it will probably work. So try it!

    If that doesn’t work, I think a USB audio interface is the next solution. Since you were still getting hum (albeit less) when plugged in to the the monitor, a new interface from the laptop should work.

    • BlxterOPEnglish
      2·
      10 months ago

      Yes it is plugged into the line in

      And I will most likely try that ground isolator thing just in case who knows but also try and see if I like the network solution if there is little lag that will work but if not I will look into an interface.

      Thanks for helping me troubleshoot and let me know if you think of anything else.