It is weird that you could record sound with a pure headphone, I have no idea how that happened.
And could you please test:
run amixer sset 'Input Source' "Headset Mic" or "Rear Mic" or "Line" first,
then plug in the headphone and choose headphone, does the sound output from headphone?
It is weird that you could record sound with a pure headphone, I have no idea how that happened.
And could you please test:
run amixer sset 'Input Source' "Headset Mic" or "Rear Mic" or "Line" first,
then plug in the headphone and choose headphone, does the sound output from headphone?