it is strange that the virtual master playback has mute at min volume
and master playback switch at the same time
-99999.dB mean -inf dB which is equalivent to the mute switch
the independent mute switch allow you to mute , and keep the volume
unchanged at unmuute
but mute at min volume mean no independent mute switch, you lost the
volume when mute by setting volume to min ,
control.22 {
iface MIXER
name 'Master Playback Volume'
value 110
comment {
access 'read write'
type INTEGER
count 1
range '0 - 127'
dbmin -9999999
dbmax 0
dbvalue.0 -1275
}
}
control.23 {
iface MIXER
name 'Master Playback Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
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https://bugs.launchpad.net/bugs/1234814
Title:
[HP EliteBook 8760w, IDT 92HD81B1X5] automute when plugging in
headphones mutes master channel
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