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Re: pulseaudio related problems....

On 02/15/2014 09:22 AM, Christian PERRIER wrote:
> So, before doing so: will that be helpful?

I think most people simply don't configure PulseAudio correctly. They
have the assumption that sound cards are still simple devices with
one input jack and one output jack and any application using it just
has to find the sound card and output its audio signal.

It's not as simple as that anymore. Modern audio codecs have tons of
options and volume controls, and - from my experience - most problems
to PulseAudio relate to the sound card being incorrectly configured.

To resolve this problem, people then try to use tools like alsamixer
and naturally, since alsamixer doesn't know anything about PulseAudio,
it cannot fully configure it.

So, in order to be able to properly configure PulseAudio, install
"pavucontrol" or use the sound preferences in GNOME3 or MATE (with
the package mate-media-pulse being installed).

Then run pavucontrol or the MATE/GNOME sound preferences and make
sure that:

* the proper sound card has been selected (it might be set to
  HDMI audio if your graphics card has HDMI)
* the proper sound output/input you want to use
  is selected and not muted
* the sound card is set to Analog Duplex Stereo

When using MATE, make sure you are actually the PulseAudio control
panel, not the old ALSA-type one, those are not the same.

There are some pitfalls when using PulseAudio and expecting it to
behave exactly like plain ALSA. PulseAudio provides much more features
and possible configuration settings, so one has to be sure to get
these right.

I also highly recommend asking in the #pulse-audio channel on FreeNode
(if I remember that that was the proper name of the channel). Those
people are awesome and it usually takes a few minutes and you have
your problem resolved.


 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@debian.org
`. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913

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