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

Oleksij Rempel linux at rempel-privat.de
Thu Nov 28 16:23:20 CET 2013

Am 28.11.2013 11:22, schrieb 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
>>>> 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.

Hi Takashi,

we found by one of our LUG users same MIC_LIMIT issue. Reported codec is
ALC269VB, but subsystem pci_id overlap with some other device. Or may be
i misinterpreted some thing. Can you please take a look on it (it is
Lenovo 43308HG):

00:1b.0 0403: 8086:3b56 (rev 05)
    Subsystem: 17aa:38af
    Flags: bus master, fast devsel, latency 0, IRQ 43
    Memory at f2800000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd-hda-intel

Lenovo-B560:~$ sudo dmidecode | grep Prod
	Product Name: 43308HG
	Product Name: MoutCook


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