Subject : [regression][ALSA][hda-conexant][2.6.38-rcX] external microphone sound too quiet
Submitter : Shawn Starr <email@example.com>
Date : 2011-02-19 6:02
Message-ID : firstname.lastname@example.org
References : http://marc.info/?l=linux-kernel&m=129809536502092&w=2
This entry is being used for tracking a regression from 2.6.37. Please don't
close it until the problem is fixed in the mainline.
On Sunday, April 17, 2011, Shawn Starr wrote:
> On Sunday, April 17, 2011 03:52:09 PM Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of regressions introduced between 2.6.37 and 2.6.38.
> > The following bug entry is on the current list of known regressions
> > introduced between 2.6.37 and 2.6.38. Please verify if it still should
> > be listed and let the tracking team know (either way).
> It is continuing, using the external microphone the audio is too quiet no
> matter how loud I set it with PulseAudio.
> The audio onboard Lenovo W500 laptop is: Conexant CX20561 (Hermosa)
> I have not had time to do any investigations to look at the git changes made.
I haven't got any reply to my follow up in the thread...
On Sun, 20 Feb 2011 10:22:25 +0100
Takashi Iwai <email@example.com> wrote:
> Yes, alsa-info.sh output is always helpful. Please attach.
> Do you mean a regression from which kernel version?
> If you have both a working and a non-working kernel, please give the
> alsa-info.sh outputs on both for comparison.
I will try from what Takashi mentioned:
>Just try model=hp. This corresponds to a model without the
Then confirm if this workaround is correct before I go further in providing alsa-info.sh. I'm now following 2.6.39-0.rc6.git0.0.fc16.x86_64 or 2.6.39-rc6.git0.
I'll reply to the original thread shortly to confirm
Created attachment 57472 [details]
Alsa Soundcard information
HDA Intel - Conexant CX20561 (Hermosa) info
So I have tried it, same problem, no amount of volume lets me use the external microphone it is just too quiet even PulseAudio Volume Control shows it barely moving the volume meter.
[ 24.235343] ALSA sound/pci/hda/hda_codec.c:3706: hda_codec: model 'hp' is selected
Plugging in a internal microphone/headset I can hear my voice fine (aside from machine noise interference/and noise).
Please give the alsa-info.sh output with model=hp and plugging a mic jack.
Also, please run the older working kernel and get alsa-info.sh output in the same situation. In that way, we can track the regression.