Re: Audio Hints, T520?

On 06.05.2013 05:43, Sean Bruno wrote:
> On Mon, 2013-05-06 at 03:25 +0200, Michael Schmiedgen wrote:
>> On 04.05.2013 06:14, Sean Bruno wrote:
>>> Speaker/headphones working great on Current.
>>>
>>> Was trying to get the microphone working, but it seems to not quite be
>>> working.
>>
>> I got the same problem with my X220. Before the last Lenovo
>> HDA quirk commits everything worked fine, but I had to set
>> the default sound unit to 1.
>> Now I do not need to set the sound unit, audio output works
>> out of the box but recording does not work anymore. I fiddled
>> with nid config but got bored after the fifth reboot.
>>
>> The behaviour changed at my last world build a month ago.
>>
>> I can supply dmesg or sysctl output if you want.
>
> Ok, this smells like a recent regression.

 From information provided by Sean I can't see why added quirk for 
playback may affect recording in any way. More likely I would guess that 
change from two playback pcm/dsp devices to one, while still having two 
record ones, made hw.snd.default_unit less usable (because there is no 
choice of output devices for it any more). Respective two input pcm/dsp 
device may require to be chosen manually in recording application. Or 
you can try additional hints to join both mics in one dsp/pcm device, 
provided by Kevin Oberman:
hint.hdac.0.cad0.nid35.config="as=2"
hint.hdac.0.cad0.nid27.config="as=2 seq=15"

PS: When checking mixer, remember that there is separate mixer for every 
pcm/dsp device. Sean. you've provided output only for one. I guess that 
other (internal) microphone is on another pcm device/mixer.

-- 
Alexander Motin
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