if the Mic and headphone of your headset works with the SONY Vaio Pro 13 in Windows , the alsa driver can use the presence detect of headphone node 0x21 to switch the Mic from int Mic node 0x12 to headset Mic node 0x18
if the Mic and headphone of your headset works with the SONY Vaio Pro 13 in Windows , the alsa driver can use the presence detect of headphone node 0x21 to switch the Mic from int Mic node 0x12 to headset Mic node 0x18