[alsa-devel] Realtek HD-A codec ALC262: How to unmute mixer node 0x24 Amp-In for Mic Pin 0x18
mengdong.lin at intel.com
Thu Oct 31 09:14:30 CET 2013
I followed your suggestion to select Rear Mic (Mic Pin 0x18) to the Input Source (node 0x07) in alsamixer. Then the mixer node 0x24 unmute 0x18, and recording works.
> -----Original Message-----
> From: alsa-devel-bounces at alsa-project.org
> [mailto:alsa-devel-bounces at alsa-project.org] On Behalf Of Lin, Mengdong
> Sent: Thursday, October 31, 2013 4:09 PM
> To: Takashi Iwai
> Cc: Pshou; alsa-devel at alsa-project.org; Kailang
> Subject: Re: [alsa-devel] Realtek HD-A codec ALC262: How to unmute mixer
> node 0x24 Amp-In for Mic Pin 0x18
> > -----Original Message-----
> > From: Takashi Iwai [mailto:tiwai at suse.de]
> > Sent: Thursday, October 31, 2013 3:45 PM
> > To: Lin, Mengdong
> > Cc: alsa-devel at alsa-project.org; Kailang; Pshou
> > Subject: Re: [alsa-devel] Realtek HD-A codec ALC262: How to unmute
> > mixer node 0x24 Amp-In for Mic Pin 0x18
> > At Thu, 31 Oct 2013 06:17:29 +0000,
> > Lin, Mengdong wrote:
> > >
> > > Hi,
> > >
> > > We found when recording on ALC262, the audio mixer node 0x24 mutes
> > > the
> > input from Mic Pin node 0x18, so we get silent data.
> > > Would someone please give me some advice to solve this?
> > >
> > > Node 0x24 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
> > > Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
> > > Amp-In vals: [0x80 0x80] [0x80 0x80] [0x00 0x00] [0x80 0x80]
> > > [0x80 0x80]
> > [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
> > > Connection: 9
> > > 0x18 0x19 0x1a 0x1b 0x1c 0x1d 0x14 0x15 0x0b
> > >
> > > I cannot find user-space amixer controls to unmute node 0x18.
> > >
> > > The recording data flows from Mic Pin 0x18 -> Mixer 0x24 -> audio input
> > The Amp-In value on pin 0x18 (Rear Mic Boost) and input 0x07 (Capture
> > Volume) are okay.
> > Too little hardware information. Please give alsa-info.sh output at
> > least. In the output above, 0x1a is chosen as the active input path,
> > so the driver looks working as expected somehow.
> Yes. The driver is okay. I need to select the input pin for the mixer, as Kailang
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