do you mean mute those connection from audio mixer 0x0b ?
Node 0x0c [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-In vals: [0x00 0x00] [0x00 0x00]
Connection: 2
0x02 0x0b
you need to file an upatream bug report if you want driver to add "loopback
playback switch " to mute those connectuon from node 0x0b in those node 0x0c,
0x0d,...
Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
Control: name="Headphone Mic Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=1, ofs=0
Control: name="Headphone Mic Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=In, idx=1, ofs=0
Control: name="Headset Mic Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=3, ofs=0
Control: name="Headset Mic Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=In, idx=3, ofs=0
Control: name="Beep Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=4, ofs=0
Control: name="Beep Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=In, idx=4, ofs=0
Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
[0x80 0x80]
Connection: 6
0x18 0x19 0x1a 0x1b 0x1d 0x14
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https://bugs.launchpad.net/bugs/1406034
Title:
XPS 15 9530, Realtek ALC3661, Black Headphone Out, Left Background
noise
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