linux-kernel - Re: Microphone not working on PCI ID 8086:3b56

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Date:	Sat, 19 Mar 2011 01:55:10 +0800
From:	Jeff Chua <jeff.chua.linux@...il.com>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Wu Fengguang <fengguang.wu@...el.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>
Subject: Re: Microphone not working on PCI ID 8086:3b56

On Sat, Oct 2, 2010 at 1:10 AM, Jeff Chua <jeff.chua.linux@...il.com> wrote:
> On Fri, Oct 1, 2010 at 6:18 PM, Takashi Iwai <tiwai@...e.de> wrote:
>
>>>
>>> Getting closer, but mic still not working.
>>
>> Jeff, give always alsa-info.sh output when you want someone else
>> looking into your HD-audio problem.  Without it, it's very hard to
>> follow what is wrong.
>> So, the mic is detected.  I guess you didn't set up the capture mixer
>> and else properly.
>
> Attached is the alsa-info output. I used alsamixer to set the Analog
> mic boost to 40db, and I can also see that alsa is detecting the
> external mic when I plug the mic in.
>
> - ALSA sound/pci/hda/patch_conexant.c:2354: CXT5066: external microphone absent
> + ALSA sound/pci/hda/patch_conexant.c:2348: CXT5066: external
> microphone detected
> Still no sound.

I just want to update you all now that I finally got the mic to work
on my X201s. It's the settings in the BIOS. Unlike earlier Thinkpad
models, the X201s BIOS has a special setting to enable/disable the
mic.  Bios setup: F1 -> Security -> I/O Ports -> Microphone -> Enable.
Since I trashed Windows on the X201s as soon as I power up the first
time  that could have disabled the mic by default.

Now, it's all working.

Thanks for all you help!

Jeff.
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