Bug#756150: pulseaudio: High pitched whine through headphones when no audio is playing

[Felipe Sateler]

On Sat, Jul 26, 2014 at 5:35 PM, Harlan Lieberman-Berg
<H.LiebermanBerg at gmail.com> wrote:
> Control: tags -1 -moreinfo
>
> On Sat, 2014-07-26 at 16:59 -0400, Felipe Sateler wrote:
>> That sounds like a problem with alsa [...]
>>
>> You can test this hipothesis by disabling the module suspend-on-idle.
>
> Bam, right on the money.  Disabling that module and restarting
> pulseaudio makes the problem go away.

Excellent, at least you have a workaround.

>
>> Without the modifications to default.pa, could you please post the
>> output of "pactl list"?
>>
>> Also without modification, if you could get a full log it would be great too:
>>
>> pulseaudio -k; pulseaudio -vvvv --log-time --log-target=file:pa.log
>
> Both attached.  During the verbose logging, I tried playing an audio
> file both with headphones on and off, to try and cover the whole range
> of potential possibilities.  Both logs were made prior to the test of
> the suspend-on-idle removal.

I don't see anything strange with the output there. If this symptom is
new, you could try with an older kernel or libasound, to see if it
helps. I do not think this is a pulseaudio bug, but rather in alsa.


-- 

Saludos,
Felipe Sateler