how do those master playback volume , headphone playback volume and pcm
playback volume affect your computer audio output in 12.04
662| 0.000) D: [pulseaudio] alsa-mixer.c: Path analog-output-
headphones (Headphones), direction=1, priority=90, probed=yes,
supported=yes, has_mute=yes, has_volume=yes, has_dB=yes, min_volume=0,
max_volume=31, min_dB=-127.5, max_dB=12
pulseaudio dB range is the sum of three playback volume controls
control.2 {
iface MIXER
name 'Master Playback Volume'
value.0 28
value.1 28
comment {
access 'read write'
type INTEGER
count 2
range '0 - 31'
dbmin -4650
dbmax 0
dbvalue.0 -450
dbvalue.1 -450
}
}
control.3 {
iface MIXER
name 'Headphone Playback Switch'
value.0 true
value.1 true
comment {
access 'read write'
type BOOLEAN
count 2
}
}
control.4 {
iface MIXER
name 'Headphone Playback Volume'
value.0 31
value.1 31
comment {
access 'read write'
type INTEGER
count 2
range '0 - 31'
dbmin -4650
dbmax 0
dbvalue.0 0
dbvalue.1 0
}
}
control.5 {
iface MIXER
name 'Master Mono Playback Switch'
value false
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.6 {
iface MIXER
name 'Master Mono Playback Volume'
value 0
comment {
access 'read write'
type INTEGER
count 1
range '0 - 31'
dbmin -4650
dbmax 0
dbvalue.0 -4650
}
}
control.18 {
iface MIXER
name 'PCM Playback Switch'
value.0 true
value.1 true
comment {
control.19 {
iface MIXER
name 'PCM Playback Volume'
value.0 23
value.1 23
comment {
access 'read write'
type INTEGER
count 2
range '0 - 31'
dbmin -3450
dbmax 1200
dbvalue.0 0
dbvalue.1 0
}
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https://bugs.launchpad.net/bugs/893210
Title:
[Dell OptiPlex GX620 - AD1981b, playback] No sound at all
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https://bugs.launchpad.net/alsa-driver/+bug/893210/+subscriptions
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