[pulseaudio-discuss] Endpoints switching rules

[Nishit Sharma]

Hi,

I have checked the sink volume using commands provided and it was 450%. Set
the volume to 100% and now speaker/headet playing smooth.

Thanks for support.

Regards
Nishit Sharma

On Sat, Dec 10, 2016 at 7:07 PM, Tanu Kaskinen <tanuk at iki.fi> wrote:

> On Thu, 2016-12-08 at 15:43 +0530, Nishit Sharma wrote:
> > On Thu, Dec 8, 2016 at 3:37 PM, Tanu Kaskinen <tanuk at iki.fi> wrote:
> >
> > > On Thu, 2016-12-08 at 15:28 +0530, Nishit Sharma wrote:
> > > > Hi All,
> > > >
> > > > I am facing noise issues when playing through Speaker/Headphone using
> > > > pulseaduio and UCM config files but this is not happening in case of
> > > > normal alsa_play.
> > >
> > > What kind of noise issues? And what is "normal alsa_play"? Do you mean
> > > aplay?
> >
> > It's like when song played with too much volume which speaker can
> > handle, like if we raises volume to max limits. Yes,it's aplay
>
> Ok, that's a bit weird. You said that the volumes in alsamixer were the
> same with and without pulseaudio - how did you check? Did you run
> "amixer --card=broxtonrt298" and ran it through diff?
>
> If the mixer settings really are the same, then check that no volumes
> in pulseaudio are over 100%. You can check that with "pactl list sinks"
> and "pactl list sink-inputs" while you're playing the test file.
>
> Also check the sink and sink input rates. If they are different,
> pulseaudio will do resampling, which shouldn't cause this kind of
> issues, but it's worth checking if playing a file that matches the sink
> sample rate makes the problem go away.
>
> Lastly, you could check if there are differences in the parameters that
> aplay and pulseaudio set (like sample rate or sample format). Maybe the
> hardware doesn't work properly with certain formats. I've heard of one
> instance where hardware made some noise with normal 16-bit audio, while
> 24-bit audio played cleanly, even though the audio file was 16-bit in
> both cases. When you play audio, you can check the current hardware
> parameters with "cat /proc/asound/card0/pcm0p/sub0/hw_params". Or at
> least that works with HDA, I'm not sure if that's an universal
> interface that works with all kernel drivers.
>
> --
> Tanu
>
> https://www.patreon.com/tanuk
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>
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