[alsa-devel] [PATCH] ALSA: hda - limit mic boost on Asus UX31[A, E]

[Takashi Iwai]

At Thu, 28 Nov 2013 10:48:49 +0100,
Oleksij Rempel wrote:
> 
> Am 27.11.2013 18:59, schrieb Oleksij Rempel:
> > Am 27.11.2013 17:18, schrieb Takashi Iwai:
> >> At Wed, 27 Nov 2013 17:12:03 +0100,
> >> Oleksij Rempel wrote:
> >>>
> >>> This both devices need limit for internal dmic.
> >>>
> >>> Signed-off-by: Oleksij Rempel <linux at rempel-privat.de>
> >>
> >> Ah, you have this Zenbook.  While I'll take your patch, yet a
> >> counter-question to you:
> >>
> >> I got a bug report complaining that the output level on this (or
> >> similar) machine is too low compared with Windows.  Is it so on yours,
> >> too?
> > 
> > I'll check it ASAP ;)
> > 
> >> If so, does the patch below make the level equivalent?
> >> The reporter isn't responsive, so need more better testing...
> >>
> >> BTW, I'd suggest to name the new fixup in your patch as
> >> ALC269VB_FIXUP_ZENBOOK (or ALC269VB_FIXUP_ASUS_ZENBOOK) as my patch
> >> does.
> 
> Hi right now i did only one test:
> On sender and reciver i use audacity to generate 1000Hz signal and to
> capture it for measuring.
> For microphone i use logitech c905 webcam. Distance between right
> speaker and mic is 24cm.
> 
> Windows and Linux was configured for maximal volume. On  linux i use
> maximal alsa volume, not pulse. On windows no plugins are used.
> Windwos 7 64bit, latest realtek driver.
> Ubuntu Linux 13.10, kernel 3.12.0-031200rc6-generic.
> 
> Both Windows and Linux have same volume. Check attachment in audacity.
> 
> Reported issue may be result of enabled compressor plugin on windows.
> 
> I will need some more time to test in on UX31A, there is no windows on
> this machine.

Thanks, that's really helpful!  So, we don't need the pre-amp verbs.

I'll likely keep these verbs applied only when a special model option
is given.


Takashi