[pulseaudio-discuss] PA uses the card's output as input instead of microphone
realnc at arcor.de
Tue Jun 29 09:28:51 PDT 2010
On 06/29/2010 12:02 AM, Tanu Kaskinen wrote:
> On Fri, 2010-06-25 at 12:42 +0300, Nikos Chantziaras wrote:
>> I've tried many combinations, but nothing works. Here's what "Input
>> Devices" shows:
>> The activity shown in the bottom bar is from an MP3 currently playing in
>> Amarok. The microphone or line-in doesn't generate any kind of activity.
>> Here's the "Recording" tab:
>> Here too, the activity is generated by Amarok. When selecting the other
>> choice in the shown pop-up menu, there's no activity shown, neither from
>> an MP3 nor from the microphone.
> Then the problem is that Pulseaudio isn't getting anything from the
> sound card's microphone input. The sound card seems to have multiple
> ports. What if you try to select some other port on the Input Devices
> If changing the port doesn't help, then the next thing to try is to
> desperately flip random mixer switches using "alsamixer -c0". If that
> helps, please report back what elements needed changing (with luck we
> might be able to incorporate that information into the default
> configuration so that in the future your sound card would be supported
> better out-of-the-box).
I started tweaking everything at random. After a while, the mic started
to work. In alsamixer, hitting F4 to get to the [Capture] settings,
there's a setting called "Digital Source". It was set to "AC97 in".
The possible settings are:
i2s mixer out
I don't have the slightest idea of what that setting is for and what the
choices mean, but the microphone only works when I set it to "i2s in".
Every other settings results in the microphone being audible when
increasing the "Capture feedback" volume no application can actually
capture any sound from it.
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