try hda_analyzer to select 0x1c in node 0x19 and change the volume
slider at node 0x1c for the subwoofer playback volume control
Node 0x19 [Audio Selector] wcaps 0x300501: Stereo
Control: name="Mono Mux", index=0, device=0
ControlAmp: chs=0, dir=In, idx=0, ofs=0
Power states:
Power: setting=D0, actual=D0
Connection: 3
0x13* 0x14 0x1c
Node 0x1a [Audio Mixer] wcaps 0x200500: Mono
Power states:
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 states:
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 states:
Power: setting=D0, actual=D0
Connection: 1
0x1b
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https://bugs.launchpad.net/bugs/1206015
Title:
No sound on kernel 3.10.3
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