You have to find out whether your internal is analog mic 0x0c or digital
mic 0x013
Node 0x0c [Pin Complex] wcaps 0x400181: Stereo
Pincap 0x00001737: IN OUT Detect Trigger ImpSense
Vref caps: HIZ 50 GRD 80
Pin Default 0x90a79130: [Fixed] Mic at Int N/A
Conn = Analog, Color = Pink
DefAssociation = 0x3, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x24: IN VREF_80
Unsolicited: tag=00, enabled=0
Connection: 1
0x03
Node 0x0e [Pin Complex] wcaps 0x400181: Stereo
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: 0x24: IN VREF_80
Unsolicited: tag=03, enabled=1
Connection: 1
0x04
Node 0x13 [Pin Complex] wcaps 0x400001: Stereo
Pincap 0x00000020: IN
Pin Default 0x90a60040: [Fixed] Mic at Int N/A
Conn = Digital, Color = Unknown
DefAssociation = 0x4, Sequence = 0x0
Pin-ctls: 0x20: IN
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https://bugs.launchpad.net/bugs/461631
Title:
No sound
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