Have you ever chosen the "microphones" from the dialogue before?
Please make sure the input source is not "headphone mic" before you choose the headphone.
Now your input source is "headphone mic":
Simple mixer control 'Input Source',0 Capabilities: cenum Items: 'Headphone Mic' 'Rear Mic' 'Headset Mic' 'Line' Item0: 'Headphone Mic'
Have you ever chosen the "microphones" from the dialogue before?
Please make sure the input source is not "headphone mic" before you choose the headphone.
Now your input source is "headphone mic":
Simple mixer control 'Input Source',0
Capabilities: cenum
Items: 'Headphone Mic' 'Rear Mic' 'Headset Mic' 'Line'
Item0: 'Headphone Mic'