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.
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)