My headset microphone only works when I choose option "Microphone" on Sound Settings, but when I select this options I can hear a "click" in the headset speaker and it stops working.

Sound Settings

When I change to other input option, speakers works fine again.

Already tried with several headset, even with the simple ones that comes with smartphones, doesn't work either.

My notebook is a Dell Vostro running Ubuntu 18.04

head -n 1 /proc/asound/card0/codec*
==> /proc/asound/card0/codec#0 <==
Codec: Realtek ALC3204
cat /proc/asound/cards
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0xa52a0000 irq 157
lspci |grep Audio
00:1f.3 Audio device: Intel Corporation Device 9dc8 (rev 30)
  • Do you know which audio chipset you have? or which machine you are running into this issue on? – Synchro Jun 27 '19 at 19:22
  • Just edited my question to insert this information. – Gabriel Piassetta Jun 27 '19 at 19:59

I don't know if you ever figured this out, but I just ran into the same problem using Pop!_OS 20.10 - basically Ubuntu.

I just killed pulseaudio and restarted it to get stereo sound and mic back. I did it with:

$ pulseaudio -k
$ pulseaudio -D

My system had another symptom in that my headphones were only playing mono sound. I don't know if that was your experience as well.

I don't know how long this will fix it, but it seems to have worked this time. I found my solution here: https://appuals.com/how-to-fix-pulseaudio-issues-in-linux/

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