Hi everybody,

Till today, I had issue with internal mic which was undetected (Dell G3
3590)

Few months ago, I updated my Ubuntu to latest LTS, 20.04.1
That didn't help. But... after a bunch of regular updates and upgrades, today, 
I have deleted line which "fixed" issue with dummy output/input.

file: sudo vim /etc/modprobe.d/alsa-base.conf
deleted line: options snd-hda-intel dmic_detect=0 => note that this command 
turns off mic (if I understand this part correctly dmic_detect=0)

After restart, internal mic works :)

Try it out! I hope that this bug is resolved for all of you. 
Do not forget to update your Ubuntu to latest LTS. For me, this action passed 
without error.

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https://bugs.launchpad.net/bugs/1840725

Title:
  Microphone not working in Ubuntu 18.04.3 LTS on new hp-
  spectre-x360-convertible-15 laptop

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