Comment 4 for bug 1093792

use hda-analyzer to check whether node 0x10 mono pin complex is the subwoofer or not

1) set pin-ctls of node 0x10 to OUT
2) check the power setting of node 0x10, 0x1a, 0x19 are D0

3) either connect node 0x19 to node 0x13

or node 0x1c

4) if you connect node 0x19 to 0x1c

a) unmute amp-out and change the volume slider of node 0x1c

b) unmute the amp-in of either node 0x13 or node 0x14 in node 0x1b and keep the other amp-in mute

c) ensure the power setting of above nodes are D0

Node 0x1b [Audio Mixer] wcaps 0x20050b: Stereo Amp-In
  Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals: [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97]
  Power: setting=D0, actual=D0
  Connection: 6
     0x13 0x14 0x0a 0x0c 0x0e 0x0f

--

Node 0x0d [Pin Complex] wcaps 0x400501: Stereo
  Control: name="Speaker Phantom Jack", index=0, device=0
  Pincap 0x00010050: OUT EAPD Balanced
  EAPD 0x2: EAPD
  Pin Default 0x92170110: [Fixed] Speaker at Int Front
    Conn = Analog, Color = Unknown
    DefAssociation = 0x1, Sequence = 0x0
    Misc = NO_PRESENCE
  Pin-ctls: 0x40: OUT
  Power: setting=D0, actual=D0
  Connection: 3
     0x13* 0x14 0x1c

Node 0x10 [Pin Complex] wcaps 0x400500: Mono
  Pincap 0x00000010: OUT
  Pin Default 0x40f000f0: [N/A] Other at Ext N/A
    Conn = Unknown, Color = Unknown
    DefAssociation = 0xf, Sequence = 0x0
  Pin-ctls: 0x00:
  Power: setting=D0, actual=D0
  Connection: 1
     0x1a

Node 0x13 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out R/L
  Control: name="Speaker Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=63
  Control: name="Speaker Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=0
  Device: name="STAC92xx Analog", type="Audio", device=0
  Amp-Out caps: N/A
  Amp-Out vals: [0x78 0x78]
  Converter: stream=8, channel=0
  Power: setting=D0, actual=D0
  Delay: 13 samples
Node 0x14 [Audio Output] wcaps 0xd0c05: Stereo Amp-Out R/L
  Control: name="Headphone Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=Out, idx=0, ofs=63
  Control: name="Headphone Playback Switch", index=0, device=0
    ControlAmp

Node 0x19 [Audio Selector] wcaps 0x300501: Stereo
  Power: setting=D0, actual=D0
  Connection: 3
     0x13* 0x14 0x1c
Node 0x1a [Audio Mixer] wcaps 0x200500: Mono
  Power: setting=D0, actual=D0
  Connection: 1
     0x19

Node 0x1b [Audio Mixer] wcaps 0x20050b: Stereo Amp-In
  Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals: [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97] [0x97 0x97]
  Power: setting=D0, actual=D0
  Connection: 6
     0x13 0x14 0x0a 0x0c 0x0e 0x0f
Node 0x1c [Audio Selector] wcaps 0x30050d: Stereo Amp-Out
  Amp-Out caps: ofs=0x1f, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-Out vals: [0x9f 0x9f]
  Power: setting=D0, actual=D0
  Connection: 1
     0x1b