refer to pa_backend.c
did you find headset mic jack or headset mic phantom jack in codec info
using dell headset model?
In PulseAudio ports will show up with the following names:
Headphones - analog-output-headphones
Headset mic - analog-input-microphone-headset
Jack in mic-in mode - analog-input-microphone
However, since regular mics also show up as analog-input-microphone,
we need to check for certain controls on alsa mixer level too, to know
if we deal with a separate mic jack, or a multi-function jack with a
mic-in mode (also called "headphone mic").
We check for the following names:
Headphone Mic Jack - indicates headphone and mic-in mode share the same jack,
i e, not two separate jacks. Hardware cannot distinguish between a
headphone and a mic.
Headset Mic Phantom Jack - indicates headset jack where hardware can not
distinguish between headphones and headsets
Headset Mic Jack - indicates headset jack where hardware can distinguish
between headphones and headsets. There is no use popping up a dialog in
this case, unless we already need to do this for the mic-in mode.
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https://bugs.launchpad.net/bugs/1395501
Title:
input devices found, but there is no input level
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