[alsa-devel] snd-hda-intel : issues with mic boost on ALC3236

[Takashi Iwai]

At Fri, 24 Apr 2015 21:34:19 +0200,
Simon Derr wrote:
> 
> Hello,
> 
> I'm having issues with the internal microphone on an Asus R553 (or S551) laptop.
> 
> With the boost set to zero the microphone works but the level of the
> recording is very low.
> If I try another boost setting I don't get any signal anymore.
> 
> I have uploaded alsa-info data here :
> http://www.alsa-project.org/db/?f=55b7fb0b4998757d099addae0a411e6a7cebc079
> 
> This is on a Linux 4.0 kernel.
> 
> Any help is welcome,

The problem is unlikely specific to the codec (ALC3236) but the whole
hardware implementation.

Your hardware seems to have only one mic pin.  It's already strange.
Usually there are two mic pins.  Did you try the input from mic jack
(or headset mic)?   Did it work with mic boot volume properly?


Takashi