Wired headset mic stopped working

[Zebulon Walton]

I've been using a wired headset with the Pinephone in noisy environments since the built-in earpiece volume is usually pretty low. Suddenly I'm finding that the microphone is not working. I can hear the call just fine, but the person on the other end cannot har me. Tried leaving voicemail to myself with the same result. Figuring maybe the microphone just went bad I bought another headset but it has the same problem. I tried toggling the mute button on the mic and the Pinephone screen reacts but the microphone still doesn't work on either headset.

This is in Mobian. I checked the settings and the input is set to the Headset Microphone with volume on full. The headsets have 4-conductor jacks. Should I try one with 3 conductors? Or did a software update knock out the audio path from the microphone to the modem?