Comment 3 for bug 1821269

Thank you reply.

My Laptop's specs is here.
https://www.acer.com/datasheets/2015/4876/ES1-131/NX.MYKSJ.002.html

My laptop has 4 pole jack instead of 3pole earphone+3pole mic jacks.
It is compatible for Apple TRRS 4pole. It works in windows10 perfectly.

I have Apple 4pole <-> EU 4pole(Nokia) hardware converter.
https://www.amazon.com/Josi-Minea-Headphone-Connectors-Smartphones/dp/B011S8XKTU
And I have 4pole to 3pole earphone+3pole mic jack divider like this.
https://www.tvps.com/3-5mm-4-pole-jack-y-splitter-plug-to-2-x-3-5mm-3-pole-sockets-cable-adapter/ecs-4pyspc/

And I also have 3pole mic and 4pole plugin-power mic.
http://www.edutige.com/etm001.html
http://audiotrack.co.kr/en/microphones/292

When I pluged in my mics on laptop jack, it doesn't appear on "PulseAudio Volume Control".
When I pluged in 3pole earphone+3pole mic with 4pole-> two 3pole divider, earphone part works only.

I searched and found some documents like me.
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1523100