I connected an Ubuntu laptop to a docking station, and a pair of headphones to the docking station. For a while I there was no problem and I heard the sound over the headphones connected to the docking station. Now there is no audio anymore when the computer is connecting to the docking station. I do not know what changed and why it stopped working.
I tried playing with the sound settings but did not find a solution.
This is how it looks over there while playing audio:
When Headphones - USB Audio is selected, the sound bar is constant (one constant light blue bar). No sound on Test.
Exactly the same with Speakers - Built-in Audio:
Line Out - USB Audio seems to react to the internal microphone of the laptop (Not to the microphone of the headphones plugged in to the docking station). The dark blue bars appear when I tap on the laptop.
Any idea how to make sound go through to my headphones again, or at least make it go through to my headphones when they are connected directly to the laptop while it is connected to the docking station(even that does not work)?
Edit: I managed to get audio when connecting the headphones directly to the laptop instead of the docking station, by running
pavucontrol and choosing the built-in audio option.
Are there any commands I can run that would help diagnose the problem?
