Hello Raymond,
On Do, 2015-04-23 at 10:53 +0800, Raymond Yau wrote:
> It strange that you just have two instead of three if you have dock
> mic
There are three ports, "mic", "dock mic", and "internal mic",
corresponding to the laptops built-in mic, the mic jack of the docking
station, and the mic jack on the laptop itself. Each mic has a separate
"Mic Boost" control in ALSA which doesn't affect the other mics. I am
attaching /proc/alsa/card1/codec#0 for your reference.
I'm not sure why you find this strange. If pulseaudio did configure and
merge in two separate "Mic Boost" volumes, the erratic behavior would be
even worse. Fortunately it doesn't.
> If the internal mic has no boost control, the dB range is suddenly
> increased when you plug Mic or Dock Mic ?
The internal mic does have a boost control, like the other mics, see
above. If I use different path conf settings for the difference mics
(e.g. "volume=merge" for Internal Mic and "volume=1" for Dock Mic), the
dynamic range indicated by PA indeed changes when the input is switched
(aka the dock mic is plugged).
> Since alc282 has a separate dmic , this mean the driver need to use
> dynamic ADC switching if your laptop internal Mic use dmic instead of
> switching input sources with the audio mixer as selector
I don't quite understand what you are saying here. I can tell that the
input source is switched automatically when the Mic is plugged,
pulseaudio notices, and the dynamic range changes back and forth:
D: [pulseaudio] module-alsa-card.c: Jack 'Dock Mic Jack' is now plugged
in
D: [pulseaudio] device-port.c: Setting port analog-input-internal-mic to
status no
D: [pulseaudio] device-port.c: Setting port analog-input-dock-mic to
status yes
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Activating path
analog-input-dock-mic
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Path analog-input-dock-mic
(Dock Microphone), direction=2, priority=78, probed=yes, supported=yes,
has_mute=yes, has_volume=yes, has_dB=yes, min_volume=0, max_volume=63,
min_dB=-17,25, max_dB=30
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Element Dock Mic Boost,
direction=2, switch=0, volume=4, volume_limit=-1, enumeration=0,
required=0, required_any=4, required_absent=0, mask=0x3600000000f66,
n_channels=2, override_map=yes
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Element Mic Boost,
direction=2, switch=0, volume=2, volume_limit=-1, enumeration=0,
required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2,
override_map=no
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Element Internal Mic Boost,
direction=2, switch=0, volume=2, volume_limit=-1, enumeration=0,
required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2,
override_map=no
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Element Capture,
direction=2, switch=1, volume=1, volume_limit=-1, enumeration=0,
required=0, required_any=0, required_absent=0, mask=0x3600000000f66,
n_channels=2, override_map=yes
[...]
I: [alsa-source-ALC282 Analog] alsa-source.c: Hardware volume ranges
from -17,25 dB to 30,00 dB.
I: [alsa-source-ALC282 Analog] alsa-source.c: Fixing base volume to
-30,00 dB
[...]
D: [pulseaudio] module-alsa-card.c: Jack 'Dock Mic Jack' is now
unplugged
D: [pulseaudio] device-port.c: Setting port analog-input-internal-mic to
status unknown
D: [pulseaudio] device-port.c: Setting port analog-input-dock-mic to
status no
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Activating path
analog-input-internal-mic
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Path
analog-input-internal-mic (Internal Microphone), direction=2,
priority=89, probed=yes, supported=yes, has_mute=yes, has_volume=yes,
has_dB=yes, min_volume=0, max_volume=3, min_dB=-17,25, max_dB=66
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Element Internal Mic Boost,
direction=2, switch=0, volume=1, volume_limit=-1, enumeration=0,
required=0, required_any=4, required_absent=0, mask=0x3600000000f66,
n_channels=2, override_map=yes
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Element Mic Boost,
direction=2, switch=0, volume=2, volume_limit=-1, enumeration=0,
required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2,
override_map=no
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Element Dock Mic Boost,
direction=2, switch=0, volume=2, volume_limit=-1, enumeration=0,
required=0, required_any=0, required_absent=0, mask=0x6, n_channels=2,
override_map=no
D: [alsa-source-ALC282 Analog] alsa-mixer.c: Element Capture,
direction=2, switch=1, volume=1, volume_limit=-1, enumeration=0,
required=0, required_any=0, required_absent=0, mask=0x3600000000f66,
n_channels=2, override_map=yes
[...]
I: [alsa-source-ALC282 Analog] alsa-source.c: Hardware volume ranges
from -17,25 dB to 66,00 dB.
I: [alsa-source-ALC282 Analog] alsa-source.c: Fixing base volume to
-66,00 dB
Maybe this log also tells you why PA only configures a single "Boost"
for every port.
> > => There is no "smooth" volume control above 25%.
> > The graphical volume controls don't reflect this;
>
> alsamixer -c0 cannot reflect the change on pulseaudio software
> volume ?
If the described effect occurs, I can see with alsamixer that the real
volume is jumping up and down. The volume displayed by "pactl list
sources" (and likewise by the sliders e.g. in the GNOME volume control
widget) is not the real but the user-set value.
Here is how PA, Capture, and Boost volume, in dB, correlate in the error
case (i.e. if "Capture" is listed before the relevant "Mic Boost" in the
path conf file, the current PA default). PA volumes are obtained using
"pactl list sources", Capture/Boost values using "amixer -c1 get
<scontrol>":
PA(%) PA(dB) Captu Boost Capture+Boost-66dB
121% 5.00 30.00 36.00 0.000000
100% 0.00 30.00 24.00 -12.000000
83% -5.00 30.00 24.00 -12.000000
68% -10.00 30.00 24.00 -12.000000
56% -15.00 30.00 12.00 -24.000000
46% -20.00 30.00 12.00 -24.000000
38% -25.00 30.00 0.00 -36.000000
32% -30.00 30.00 0.00 -36.000000
26% -35.00 30.00 0.00 -36.000000
22% -40.00 25.50 0.00 -40.500000
18% -45.00 20.25 0.00 -45.750000
15% -50.00 15.75 0.00 -50.250000
12% -55.00 10.50 0.00 -55.500000
10% -60.00 6.00 0.00 -60.000000
8% -65.00 0.75 0.00 -65.250000
7% -70.00 -4.50 0.00 -70.500000
6% -75.00 -9.00 0.00 -75.000000
5% -80.00 -14.25 0.00 -80.250000
4% -85.00 -17.25 0.00 -83.250000
You can see that "Capture" is constant at 30dB above 22%. By comparing
the 2nd and last column you can see how inaccurately this control
behaves. 10dB deviation between desired and actual volume is common.
In contrast, if I list "Mic Boost" before "Capture" in the path conf
file, it looks like this:
PA(%) PA(dB) Captu Boost Capture+Boost-dB
121% 5.00 30.00 36.00 0.000000
100% 0.00 29.25 36.00 -0.750000
83% -5.00 24.75 36.00 -5.250000
68% -10.00 19.50 36.00 -10.500000
56% -15.00 14.25 36.00 -15.750000
46% -20.00 9.75 36.00 -20.250000
38% -25.00 4.50 36.00 -25.500000
32% -30.00 -0.75 36.00 -30.750000
26% -35.00 -5.25 36.00 -35.250000
22% -40.00 1.50 24.00 -40.500000
18% -45.00 -3.75 24.00 -45.750000
15% -50.00 3.75 12.00 -50.250000
12% -55.00 -1.50 12.00 -55.500000
10% -60.00 6.00 0.00 -60.000000
8% -65.00 0.75 0.00 -65.250000
7% -70.00 -4.50 0.00 -70.500000
6% -75.00 -9.00 0.00 -75.000000
5% -80.00 -14.25 0.00 -80.250000
4% -85.00 -17.25 0.00 -83.250000
The accuracy is much better now, < 1dB almost everywhere. The boost
steps in at 12%/-55dB already.
> Do this occur only in dock Mic?
No, it occurs with all 3 Mics if I use the default PA settings in the
path configuration files.
> You need to check whether the driver set the amp in of the correct
> audio input correctly when using dock mic
Yes it does. I see no indication of the opposite. I am positive that
this problem is caused by PA, not by the driver.
> Do pactl list source indicate the dock Mic is active port ?
Yes. The active port switches behave correctly. See log output above.
Martin
> thus user control
> > input volume is almost impossible at higher levels than 25%. Volume
> will
> > appear to change non-predictably to users.
> >
> > By changing the ordering of "Capture" and "Mic Boost" in the path
> conf
> >
> file /usr/share/pulseaudio/alsa-mixer/paths/analog-input-dock-mic.conf,
> > I can get smooth changes over the whole dynamic range again.
> Therefore I
> > reckon that commit e6051cdf should be reverted because the effect
> > described here is general, while the noise level seems to be
> different
> > between models: On my system, there is no perceivable difference in
> > noise level if the overall volume is the same (thus, 30dB "Capture"
> +
> > 0dB "Boost" has the same noise level as 18 dB "Capture" and 12 dB
> > "Boost" or -6dB "Capure" and 36dB "Boost").
> >
> >
>
Codec: Realtek ALC282
Address: 0
AFG Function Id: 0x1 (unsol 1)
Vendor Id: 0x10ec0282
Subsystem Id: 0x10cf2100
Revision Id: 0x100003
No Modem Function Group found
Default PCM:
rates [0x560]: 44100 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
Power states: D0 D1 D2 D3 CLKSTOP EPSS
Power: setting=D0, actual=D0
GPIO: io=3, o=0, i=0, unsolicited=1, wake=0
IO[0]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[1]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
IO[2]: enable=0, dir=0, wake=0, sticky=0, data=0, unsol=0
Node 0x02 [Audio Output] wcaps 0x41d: Stereo Amp-Out
Control: name="Speaker Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Amp-Out caps: ofs=0x57, nsteps=0x57, stepsize=0x02, mute=0
Amp-Out vals: [0x00 0x00]
Converter: stream=8, channel=0
PCM:
rates [0x560]: 44100 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x03 [Audio Output] wcaps 0x41d: Stereo Amp-Out
Control: name="Headphone+LO Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Device: name="ALC282 Analog", type="Audio", device=0
Amp-Out caps: ofs=0x57, nsteps=0x57, stepsize=0x02, mute=0
Amp-Out vals: [0x57 0x57]
Converter: stream=8, channel=0
PCM:
rates [0x560]: 44100 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x04 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x05 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x06 [Audio Output] wcaps 0x611: Stereo Digital
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
IEC Coding Type: 0x0
PCM:
rates [0x5e0]: 44100 48000 88200 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x07 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x08 [Audio Input] wcaps 0x10051b: Stereo Amp-In
Control: name="Capture Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Control: name="Capture Switch", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Device: name="ALC282 Analog", type="Audio", device=0
Amp-In caps: ofs=0x17, nsteps=0x3f, stepsize=0x02, mute=1
Amp-In vals: [0x29 0x29]
Converter: stream=0, channel=0
SDI-Select: 0
PCM:
rates [0x560]: 44100 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x23
Node 0x09 [Audio Input] wcaps 0x10051b: Stereo Amp-In
Amp-In caps: ofs=0x17, nsteps=0x3f, stepsize=0x02, mute=1
Amp-In vals: [0x97 0x97]
Converter: stream=0, channel=0
SDI-Select: 0
PCM:
rates [0x560]: 44100 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x22
Node 0x0a [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
Control: name="Mic Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Control: name="Mic Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Control: name="Dock Mic Playback Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=2, ofs=0
Control: name="Dock Mic Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=In, idx=2, 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]
Connection: 5
0x18 0x19 0x1a 0x1b 0x1d
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
Node 0x0d [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
0x03 0x0b
Node 0x0e [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x0f [Audio Mixer] wcaps 0x20010a: Mono Amp-In
Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-In vals: [0x00 0x00]
Connection: 1
0x0d
Node 0x10 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x11 [Audio Input] wcaps 0x10051b: Stereo Amp-In
Amp-In caps: ofs=0x17, nsteps=0x3f, stepsize=0x02, mute=1
Amp-In vals: [0x29 0x29]
Converter: stream=4, channel=0
SDI-Select: 0
PCM:
rates [0x560]: 44100 48000 96000 192000
bits [0xe]: 16 20 24
formats [0x1]: PCM
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x12
Node 0x12 [Pin Complex] wcaps 0x40040b: Stereo Amp-In
Control: name="Internal Mic Boost Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Control: name="Internal Mic Phantom Jack", index=0, device=0
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x01 0x01]
Pincap 0x00000020: IN
Pin Default 0xb7a60150: [Fixed] Mic at Oth Mobile-In
Conn = Digital, Color = Unknown
DefAssociation = 0x5, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x13 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x14 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
Control: name="Speaker Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Control: name="Speaker Phantom Jack", index=0, device=0
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x80 0x80]
Pincap 0x00010014: OUT EAPD Detect
EAPD 0x2: EAPD
Pin Default 0x90170110: [Fixed] Speaker at Int N/A
Conn = Analog, Color = Unknown
DefAssociation = 0x1, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x0c
Node 0x15 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x16 [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x17 [Pin Complex] wcaps 0x40050c: Mono Amp-Out
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x80]
Pincap 0x00000010: OUT
Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
Conn = 1/8, Color = Black
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x0f
Node 0x18 [Pin Complex] wcaps 0x40048b: Stereo Amp-In
Control: name="Mic Boost Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Control: name="Mic Jack", index=0, device=0
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x00003724: IN Detect
Vref caps: HIZ 50 GRD 80 100
Pin Default 0x04a11040: [Jack] Mic at Ext Right
Conn = 1/8, Color = Black
DefAssociation = 0x4, Sequence = 0x0
Pin-ctls: 0x24: IN VREF_80
Unsolicited: tag=04, enabled=1
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x19 [Pin Complex] wcaps 0x40048b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x00003724: IN Detect
Vref caps: HIZ 50 GRD 80 100
Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
Conn = 1/8, Color = Black
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN VREF_HIZ
Unsolicited: tag=00, enabled=0
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x1a [Pin Complex] wcaps 0x40048b: Stereo Amp-In
Control: name="Dock Mic Boost Volume", index=0, device=0
ControlAmp: chs=3, dir=In, idx=0, ofs=0
Control: name="Dock Mic Jack", index=0, device=0
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x00 0x00]
Pincap 0x00003724: IN Detect
Vref caps: HIZ 50 GRD 80 100
Pin Default 0x21a11030: [Jack] Mic at Sep Rear
Conn = 1/8, Color = Black
DefAssociation = 0x3, Sequence = 0x0
Pin-ctls: 0x24: IN VREF_80
Unsolicited: tag=03, enabled=1
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x1b [Pin Complex] wcaps 0x40058f: Stereo Amp-In Amp-Out
Control: name="Headphone Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Control: name="Dock Headphone Jack", index=0, device=0
Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x2f, mute=0
Amp-In vals: [0x00 0x00]
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x80 0x80]
Pincap 0x0000373c: IN OUT HP Detect
Vref caps: HIZ 50 GRD 80 100
Pin Default 0x2121101f: [Jack] HP Out at Sep Rear
Conn = 1/8, Color = Black
DefAssociation = 0x1, Sequence = 0xf
Pin-ctls: 0xc0: OUT HP VREF_HIZ
Unsolicited: tag=01, enabled=1
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 2
0x0c 0x0d*
Node 0x1c [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x1d [Pin Complex] wcaps 0x400400: Mono
Pincap 0x00000020: IN
Pin Default 0x909701f0: [Fixed] Aux at Int N/A
Conn = Analog, Color = Unknown
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x20: IN
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Node 0x1e [Pin Complex] wcaps 0x400781: Stereo Digital
Pincap 0x00000014: OUT Detect
Pin Default 0x411111f0: [N/A] Speaker at Ext Rear
Conn = 1/8, Color = Black
DefAssociation = 0xf, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x06
Node 0x1f [Vendor Defined Widget] wcaps 0xf00000: Mono
Node 0x20 [Vendor Defined Widget] wcaps 0xf00040: Mono
Processing caps: benign=0, ncoeff=117
Node 0x21 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out
Control: name="Line Out Playback Switch", index=0, device=0
ControlAmp: chs=3, dir=Out, idx=0, ofs=0
Control: name="Headphone Jack", index=0, device=0
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x80 0x80]
Pincap 0x0000001c: OUT HP Detect
Pin Default 0x04211020: [Jack] HP Out at Ext Right
Conn = 1/8, Color = Black
DefAssociation = 0x2, Sequence = 0x0
Pin-ctls: 0x40: OUT
Unsolicited: tag=02, enabled=1
Power states: D0 D1 D2 D3 EPSS
Power: setting=D0, actual=D0
Connection: 2
0x0c 0x0d*
Node 0x22 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
[0x80 0x80]
Connection: 6
0x18 0x19 0x1a 0x1b 0x1d 0x0b
Node 0x23 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
[0x80 0x80]
Connection: 6
0x18 0x19 0x1a 0x1b 0x1d 0x0b
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