[alsa-devel] Internal Mic Boost channel is unused

Nathanael D. Noblet nathanael at gnat.ca
Wed Sep 18 17:28:45 CEST 2013


On 09/16/2013 03:57 PM, David Henningsson wrote:

>> A quick diff shows that amixer is seeing differences.
>> --- nothing.out    2013-09-16 09:11:54.678168182 -0600
>> +++ mic.out    2013-09-16 09:11:54.675168245 -0600
>> @@ -6,7 +6,7 @@
>>     : values=on
>>   numid=18,iface=CARD,name='Mic Jack'
>>     ; type=BOOLEAN,access=r-------,values=1
>> -  : values=off
>> +  : values=on
>>   numid=20,iface=CARD,name='Mic Jack',index=1
>>     ; type=BOOLEAN,access=r-------,values=1
>>     : values=off
>>
>>
>> Given this information... what's the next step?
>
> Matching this with your alsa-info, we can see that 'Mic Jack'
> corresponds to 0x1b and 'Mic Jack', index=1 corresponds to 0x1a.
>
> Hence you could try turning pin 0x1a to "not connected" in
> hda-jack-retask. (I don't know how/if hda-jack-retask is packaged in
> Fedora, but it is part of alsa-tools.)
>
> If this resolves your problem, we could then try making that the default
> in upcoming kernels, but the question is we really dare to do that,
> without clear confirmation that 0x1a is actually useless. In current
> state it's a bit buggy, but if the headphone jack is actually a headset
> jack turning that off would make the headset mic go from "needs manual
> adjustment to work" to "completely unusuable".

I located a headset (mic and headphones). Plugged them into the 
headphone jack. It seems the mic was 'somewhat' active in that if I 
clicked the mic it would register audio on the vumeter. I did a 
recording and got some noise from it but it wasn't really clear. I don't 
know if this means anything. I've attached the nothing.out and a 
headset.out showing what has changed... Its considerably different than 
the other simple ones. Thoughts?


--- nothing.out	2013-09-16 09:11:54.678168182 -0600
+++ headset.out	2013-09-18 09:25:37.744247730 -0600
@@ -1,6 +1,6 @@
  numid=21,iface=CARD,name='Headphone Jack'
    ; type=BOOLEAN,access=r-------,values=1
-  : values=off
+  : values=on
  numid=19,iface=CARD,name='Internal Mic Phantom Jack'
    ; type=BOOLEAN,access=r-------,values=1
    : values=on
@@ -9,7 +9,7 @@
    : values=off
  numid=20,iface=CARD,name='Mic Jack',index=1
    ; type=BOOLEAN,access=r-------,values=1
-  : values=off
+  : values=on
  numid=22,iface=CARD,name='Speaker Phantom Jack'
    ; type=BOOLEAN,access=r-------,values=1
    : values=on
@@ -73,7 +73,7 @@
    ; Item #0 'Mic'
    ; Item #1 'Internal Mic'
    ; Item #2 'Mic 1'
-  : values=0
+  : values=1
  numid=7,iface=MIXER,name='Input Source',index=1
    ; type=ENUMERATED,access=rw------,values=1,items=3
    ; Item #0 'Mic'
@@ -88,10 +88,10 @@
    : values=1
  numid=4,iface=MIXER,name='Speaker Playback Switch'
    ; type=BOOLEAN,access=rw------,values=2
-  : values=on,on
+  : values=off,off
  numid=3,iface=MIXER,name='Speaker Playback Volume'
    ; type=INTEGER,access=rw---R--,values=2,min=0,max=74,step=0
-  : values=74,74
+  : values=0,0
    | dBscale-min=-74.00dB,step=1.00dB,mute=0
  numid=26,iface=PCM,name='Capture Channel Map'
    ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0



-- 
Nathanael d. Noblet
t 403.875.4613
-------------- next part --------------
numid=21,iface=CARD,name='Headphone Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=19,iface=CARD,name='Internal Mic Phantom Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=18,iface=CARD,name='Mic Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=20,iface=CARD,name='Mic Jack',index=1
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=22,iface=CARD,name='Speaker Phantom Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=17,iface=MIXER,name='Master Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=16,iface=MIXER,name='Master Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=74,step=0
  : values=74
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=2,iface=MIXER,name='Headphone Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=1,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=74,step=0
  : values=74,74
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=29,iface=MIXER,name='PCM Playback Volume'
  ; type=INTEGER,access=rw---RW-,values=2,min=0,max=255,step=0
  : values=255,255
  | dBscale-min=-51.00dB,step=0.20dB,mute=0
numid=15,iface=MIXER,name='Mic Boost Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=4,step=0
  : values=4,4
  | dBscale-min=0.00dB,step=10.00dB,mute=0
numid=10,iface=MIXER,name='Capture Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=12,iface=MIXER,name='Capture Switch',index=1
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=14,iface=MIXER,name='Capture Switch',index=2
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=9,iface=MIXER,name='Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=80,step=0
  : values=80,80
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=11,iface=MIXER,name='Capture Volume',index=1
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=80,step=0
  : values=70,70
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=13,iface=MIXER,name='Capture Volume',index=2
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=80,step=0
  : values=71,71
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=5,iface=MIXER,name='Auto-Mute Mode'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Disabled'
  ; Item #1 'Enabled'
  : values=0
numid=24,iface=MIXER,name='Beep Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=23,iface=MIXER,name='Beep Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=6
  | dBscale-min=-28.00dB,step=4.00dB,mute=0
numid=6,iface=MIXER,name='Input Source'
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'Mic'
  ; Item #1 'Internal Mic'
  ; Item #2 'Mic 1'
  : values=1
numid=7,iface=MIXER,name='Input Source',index=1
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'Mic'
  ; Item #1 'Internal Mic'
  ; Item #2 'Mic 1'
  : values=1
numid=8,iface=MIXER,name='Input Source',index=2
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'Mic'
  ; Item #1 'Internal Mic'
  ; Item #2 'Mic 1'
  : values=1
numid=4,iface=MIXER,name='Speaker Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=3,iface=MIXER,name='Speaker Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=74,step=0
  : values=0,0
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=26,iface=PCM,name='Capture Channel Map'
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=3,4
  |     | chmap-fixed=FL,FR

numid=25,iface=PCM,name='Playback Channel Map'
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=0,0
  |     | chmap-fixed=FL,FR

numid=27,iface=PCM,name='Capture Channel Map',device=2
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=0,0
  |     | chmap-fixed=FL,FR

numid=28,iface=PCM,name='Capture Channel Map',index=1,device=2
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=0,0
  |     | chmap-fixed=FL,FR

-------------- next part --------------
numid=21,iface=CARD,name='Headphone Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=19,iface=CARD,name='Internal Mic Phantom Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=18,iface=CARD,name='Mic Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=20,iface=CARD,name='Mic Jack',index=1
  ; type=BOOLEAN,access=r-------,values=1
  : values=off
numid=22,iface=CARD,name='Speaker Phantom Jack'
  ; type=BOOLEAN,access=r-------,values=1
  : values=on
numid=17,iface=MIXER,name='Master Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=16,iface=MIXER,name='Master Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=74,step=0
  : values=74
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=2,iface=MIXER,name='Headphone Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=1,iface=MIXER,name='Headphone Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=74,step=0
  : values=74,74
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=29,iface=MIXER,name='PCM Playback Volume'
  ; type=INTEGER,access=rw---RW-,values=2,min=0,max=255,step=0
  : values=255,255
  | dBscale-min=-51.00dB,step=0.20dB,mute=0
numid=15,iface=MIXER,name='Mic Boost Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=4,step=0
  : values=4,4
  | dBscale-min=0.00dB,step=10.00dB,mute=0
numid=10,iface=MIXER,name='Capture Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=12,iface=MIXER,name='Capture Switch',index=1
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=14,iface=MIXER,name='Capture Switch',index=2
  ; type=BOOLEAN,access=rw------,values=2
  : values=off,off
numid=9,iface=MIXER,name='Capture Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=80,step=0
  : values=80,80
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=11,iface=MIXER,name='Capture Volume',index=1
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=80,step=0
  : values=70,70
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=13,iface=MIXER,name='Capture Volume',index=2
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=80,step=0
  : values=71,71
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=5,iface=MIXER,name='Auto-Mute Mode'
  ; type=ENUMERATED,access=rw------,values=1,items=2
  ; Item #0 'Disabled'
  ; Item #1 'Enabled'
  : values=0
numid=24,iface=MIXER,name='Beep Playback Switch'
  ; type=BOOLEAN,access=rw------,values=1
  : values=on
numid=23,iface=MIXER,name='Beep Playback Volume'
  ; type=INTEGER,access=rw---R--,values=1,min=0,max=7,step=0
  : values=6
  | dBscale-min=-28.00dB,step=4.00dB,mute=0
numid=6,iface=MIXER,name='Input Source'
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'Mic'
  ; Item #1 'Internal Mic'
  ; Item #2 'Mic 1'
  : values=0
numid=7,iface=MIXER,name='Input Source',index=1
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'Mic'
  ; Item #1 'Internal Mic'
  ; Item #2 'Mic 1'
  : values=1
numid=8,iface=MIXER,name='Input Source',index=2
  ; type=ENUMERATED,access=rw------,values=1,items=3
  ; Item #0 'Mic'
  ; Item #1 'Internal Mic'
  ; Item #2 'Mic 1'
  : values=1
numid=4,iface=MIXER,name='Speaker Playback Switch'
  ; type=BOOLEAN,access=rw------,values=2
  : values=on,on
numid=3,iface=MIXER,name='Speaker Playback Volume'
  ; type=INTEGER,access=rw---R--,values=2,min=0,max=74,step=0
  : values=74,74
  | dBscale-min=-74.00dB,step=1.00dB,mute=0
numid=26,iface=PCM,name='Capture Channel Map'
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=3,4
  |     | chmap-fixed=FL,FR

numid=25,iface=PCM,name='Playback Channel Map'
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=0,0
  |     | chmap-fixed=FL,FR

numid=27,iface=PCM,name='Capture Channel Map',device=2
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=0,0
  |     | chmap-fixed=FL,FR

numid=28,iface=PCM,name='Capture Channel Map',index=1,device=2
  ; type=INTEGER,access=r----R--,values=2,min=0,max=36,step=0
  : values=0,0
  |     | chmap-fixed=FL,FR



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