There is an audio path from 0x1e -> 0x1d -> 0x2b -> (0x15 , 0x16 or
0x17)
the amp out at node 0x1e can be use as playback volume for the speaker
or mic jack if other amp-in except node 0s2b in node 0x1d are muted
Node 0x1d [Audio Mixer] wcaps 0x20010b: 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]
Connection: 5
0x28 0x29 0x2a 0x2b 0x12
Node 0x1e [Audio Selector] wcaps 0x30010d: Stereo Amp-Out
Amp-Out caps: ofs=0x1f, nsteps=0x1f, stepsize=0x05, mute=1
Amp-Out vals: [0x9f 0x9f]
Connection: 1
0x1d
Node 0x2b [Audio Selector] wcaps 0x300101: Stereo
Connection: 3
0x15* 0x16 0x17
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https://bugs.launchpad.net/bugs/1238144
Title:
Dell 1535 no sound from speakers, headphone out is ok
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