7.3.4.6 Audio Widget Capabilities The Audio Capabilities control returns
a set of bit fields describing the audio capabilities of the widget.

Parameter ID:  09h 
Response Format:  


23:20 Type
10 Power Cntrl
8 Conn List
0 Channel count

Figure 86.  Audio Widget Capabilities Response Format


Table 138. Widget Type

2h Audio Mixer


nid = 0x3e, verb = 0xf00, param = 0x9
 value = 0x200500

http://mailman.alsa-project.org/pipermail/alsa-
devel/2012-November/056634.html

The 0x3e is a stereo to mono mixer, connecting to 0x1c.


seem the widget 0x3e is audio mixer Wridget with power control and
connection list

try to find out the connection list of node 0x3e

and  widget cap of node 0x3d

7.3.4.11 Connection List Length Returns the length of the connection list for 
the widget.
 Parameter ID:  0Eh 
Response Format: 

31:8 7 6:0 
Reserved Long Form Connection List Length

 Figure 92.  Connection List Length Response Format

Long Form indicates whether the items in the connection list are long form or 
short form as described in Section 7.1.2.
 Connection List Length is an integer indicating the number of items in the 
connection list.  If Connection List Length is 1, there is only one hard-wired 
input possible, which is read from the Connection List, and there is no 
Connection Select Control (see Section 7.3.3.2

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https://bugs.launchpad.net/bugs/1227148

Title:
  System76 galu1: Inverted Internal microphone (phase inversion)

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