Librem5: Internal Microphone not recognized after 28.3.2022 update

Describe your issue

What's the expected behaviour?

Internal microphone works

What's the current behaviour?

There are only "Analog Input - Librem5" and "Analog Input - Modem" input devices and none of them recieves sound from internal microphone.

How to reproduce your issue?

Update your edge pmos to latest version, reboot, and try to make a call or record sound.

What device are you using?

Librem5

On what postmarketOS version did you encounter the issue?

• edge (master branch)
• v21.12

On what environment did you encounter the issue?

Phone environments

• Phosh
• Plasma Mobile
• Sxmo (Wayland/Sway)

Other

• No environment
• GNOME
• KDE Plasma
• Kodi
• MATE
• Shelli
• Sway
• Weston
• Xfce4
• fbkeyboard
• i3wm
• Sxmo (Xorg/Dwm)

How did you get postmarketOS image?

• from https://images.postmarketos.org
• I built it using pmbootstrap
• It was preinstalled on my device

What's the build date of the image? (in yyyy-mm-dd format)

I noticed the issue today. Yesterday I was able to make calls with people, then I updated the system. I update daily. Personally I blame the latest kernel "purism-librem5 5.16.16-librem5.1" but not sure at all.

I'm not sure how to check which packages was updated yesterday, that would also help 😄

I'm also not sure how to downgrade and test the previous state. I believe it is not possible/easy in alpine...

Thanks for your work! :)

Additional information

I'll post any logs on demand :)