the mic pin support impedence sense which alllow the driver which kind
of jack plugged since mic has higher impedance than the other jack
Node 0x0e [Pin Complex] wcaps 0x400181: Stereo
Control: name="Mic Jack Mode", index=0, device=0
ControlAmp: chs=0, dir=In, idx=0, ofs=0
Control: name="Mic Phantom Jack", index=0, device=0
Pincap 0x00001737: IN OUT Detect Trigger ImpSense
Vref caps: HIZ 50 GRD 80
Pin Default 0x02a79130: [Jack] Mic at Ext Front
Conn = Analog, Color = Pink
DefAssociation = 0x3, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x22: IN VREF_GRD
Unsolicited: tag=00, enabled=0
Connection: 1
0x04r
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https://bugs.launchpad.net/bugs/946232
Title:
[Meta-bug] Missing speaker and/or internal mic port
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