Score:0

Laptop internal microphone not working, after plugging HDMI

co flag

My laptop internal microphone does not work anymore, after plugging HDMI for the first time.

I just bought a new Dell Precision 5760, shipped with Ubuntu 20.04. I installed a few things, including Zoom, and I actually made calls successfully.

But now the microphone does not work anymore. If I open Ubuntu settings and go to the "Sound" panel, the "Input" meter does not react to sound as it did before.

The only thing I made between the mic working and not working, was to plug my laptop to an external screen, using HDMI (for the very first time, this is a brand new laptop.)

I have no idea how to gather more information about this. Any idea?

system settings, sound panel

[EDIT]

In pavucontrol, the profile of sof-soundwire is set to the only available choice: Play HiFi quality Music (the only other choice available is Off):

enter image description here

As for the input device, the only one available is selected, and looks like the internal mic to me:

enter image description here

Score:0
cn flag
  • install pavucontrol (pulse audio volume control)
  • In pavucontrol configuration tab, check "profile" is not set to HDMI but to analog. Check input tab for correct input if available.
co flag
Thank you! I had already checked that, and all looks OK to me. I've edited my question with more info from pavucontrol. I don't know how to find any more relevant info :-(
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