Codec-Dump-PNG Jack Mic External connected\disconnected

[Baio1977]

I extracted codec dumps from linux with external mic connector (jack) connected and disconnected and this is the result:

1 internal microphone

2 External microphone

As you can see, the dump highlights the connection nodes of the internal\external Mic, furthermore it is visible on connector 27 (0x1b) something changes when connecting the Jack, but at the moment the 27 OUT node is unused

[5T33Z0]

My guess is that audio is not forwarded to the speaker if a external MIC is connected to avoid feedback loops.