On 10/25/2012 12:32 PM, John Frankish wrote:
-----Original Message-----
From: John Frankish
Sent: Monday, 22 October, 2012 11:38
To: General PulseAudio Discussion
Cc: 'David Henningsson'
Subject: RE: [pulseaudio-discuss] Linking Channels Block Mono Microphone
On 10/22/2012 08:50 AM, John Frankish wrote:
Using pulseaudio-2.1 with a dell latitude e6220 and the internal mono
microphone:
The pavucontrol "configuration" tab correctly shows the internal microphone as
mono.
The pavucontrol "input" tab incorrectly assumes the internal
microphone is stereo and any input is blocked until the "link channels" icon is
clicked in order to unlink the channels.
From google I can see that several people have seen the same problem, but I
don't see a solution/bug fix anywhere.
Is there some way to add/edit/modify a configuration file to avoid
having to remember to unlink the microphone channels every time?
We do this through a kernel patch usually. Can you submit alsa-info
(see https://wiki.ubuntu.com/Audio/AlsaInfo )?
Thanks for the reply, please see:
http://www.alsa-project.org/db/?f=de69a107ac63f0a3629cd16fe9b89d23ccef5888
Sorry for not replying earlier; I was hoping you had a Conexant or
Realtek codec where we already have code for this, and can just add
quirks. For IDT codec driver we need to write some extra code, and I
can't promise I have time to do this right now. Sorry.
I upgraded to pulseaudio-2.1 and tried on another machine and the result is the
same.
Furthermore, looking in the "input devices" tab (see attached screenshot):
1. The usb headset microphone is correctly shown as a mono microphone, but the
input level strip is missing.
2. The internal sound card microphone input level strip is present.
Looking at the "recording" tab (see attached screenshot):
1. The usb headset microphone is incorrectly shown as a stereo microphone
2. The input level strip is missing.
3. Even if I unlink the stereo channel lock, the input is not recorded.
4. If I swap to the internal sound card microphone, the input level strip
reappears.
The Logitech usb headset must be a pretty common device, but its use appears
broken as far as pulseaudio-2.0/2.1 are concerned?
I have a Logitech usb headset and it works just fine (Ubuntu Quantal,
which runs PulseAudio 2.1 and Linux 3.5 kernel).
It gives a output-stereo + input-mono profile as default.
--
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic
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