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The issue that I'm having is that headphones plugged into the 3.5mm jack on the front of my desktop computer are not always detected. I'm running Ubuntu 20.04 on a custom built computer with a B450 Tomahawk motherboard. I'm certain that the issue is with Ubuntu 20.04 because the issue was not occurring (as far as I'm aware) when the same computer was running 18.04.

The steps to create my problem are:

  1. Be running computer with headphones disconnected using another audio output.
  2. Simply plug headphones into computer but headphones don't appear in sound settings.
  3. By suspending and unsuspending the computer, the problem is usually fixed and headphones will now appear in sound settings.

Some things that I've tried:

Any help would be greatly appreciated!

2

Open your terminal add run these

pulseaudio --kill 
pulseaudio --start

This solved my problem in Ubuntu 20.04. But unfortunately there should be automatic detection, which is not working. Slightly disappointed

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