Ubuntu: How to disable unused microphone devices

When you are using a dedicated webcam device on a desktop machine, you never want to use its microphone. Here is how to disable it.
This can be useful if "smart" voice chat or phone software picks its microphone at random. If you disable all but one, you can avoid that.

  1. sudo apt install pavucontrol
  2. Launch pavucontrol
  3. Go to the "Configuration" tab at the very right
  4. Disable your webcam's microphone by choosing "Off" from the dropdown menu.

You may use any other mixer tool where you can enable/disable devices, I'm just using this one.

Arne Hartherz over 2 years ago
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