Hi,
This is my personal, very short and simple guide how I have set my internal microphone working on ThinkPad T520 and Fedora 3.3.0-4.fc16.x86_64.
Switch to root and open config file /var/lib/alsa/asound.state
See differences in control points 6 to 12 below.
Generally – values have to be set as true or higher than 0 etc.
After editing and saving run this command: sudo alsactl restore (and check if it works)
Note! My Fedora implicitly deletes this changes after boot. It can be useful copy that fixed version of asound.state and simply rewrite it and restore again.
More sophisticated method – set up cron job for this.
Note2! Some people experienced problems with restoring modified asound.state file. In that case simply create new file with correct settings and load it using --file in alsactl because it points on /var/lib/alsa/asound.state file by default.
Note2! Some people experienced problems with restoring modified asound.state file. In that case simply create new file with correct settings and load it using --file in alsactl because it points on /var/lib/alsa/asound.state file by default.
My control.6 to control.12 changes in asound.state file:
iface MIXER
name 'Mic Boost Volume'
value.0 4
value.1 4
comment {
access 'read write'
type INTEGER
count 2
range '0 - 4'
dbmin 0
dbmax 4000
dbvalue.0 4000
dbvalue.1 4000
}
}
control.7 {
iface MIXER
name 'Mic Capture Volume'
value.0 80
value.1 80
comment {
access 'read write'
type INTEGER
count 2
range '0 - 80'
dbmin -7400
dbmax 600
dbvalue.0 600
dbvalue.1 600
}
}
control.8 {
iface MIXER
name 'Mic Capture Switch'
value.0 true
value.1 true
comment {
access 'read write'
type BOOLEAN
count 2
}
}
control.9 {
iface MIXER
name 'Internal Mic Boost Volume'
value.0 2
value.1 2
comment {
access 'read write'
type INTEGER
count 2
range '0 - 4'
dbmin 0
dbmax 4800
dbvalue.0 4800
dbvalue.1 4800
}
}
control.10 {
iface MIXER
name 'Internal Mic Capture Volume'
value.0 80
value.1 80
comment {
access 'read write'
type INTEGER
count 2
range '0 - 80'
dbmin -7400
dbmax 600
dbvalue.0 600
dbvalue.1 600
}
}
control.11 {
iface MIXER
name 'Internal Mic Capture Switch'
value.0 true
value.1 true
comment {
access 'read write'
type BOOLEAN
count 2
}
}
control.12 {
iface MIXER
name 'Master Playback Volume'
value 74
comment {
access 'read write'
type INTEGER
count 1
range '0 - 74'
dbmin -7400
dbmax 0
dbvalue.0 0
}
}
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