[alsa-devel] Internal Mic Boost channel is unused

Nathanael D. Noblet nathanael at gnat.ca
Wed Oct 9 21:58:08 CEST 2013

On 10/09/2013 01:46 PM, Nathanael D. Noblet wrote:
> On 09/16/2013 03:57 PM, David Henningsson wrote:
>> 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".
> So that adjustment allows the internal microphone to be useable. However
> the mic in jack is now completely unusable. With a headset or a plain
> microphone.
> Thoughts?

Actually I was wrong. I plugged it into the wrong jack. With that retask 
everything seems to work now. Plugging in a microphone into the mic jack 
picks up that audio, unplugging it uses the built in mic. So that's 
good. What's the next step?

Nathanael d. Noblet
t 403.875.4613

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