[alsa-devel] Pop noise on startup when headphones are plugged in (Dell XPS13 9333)

[Gabriele Mazzotta]

2015-04-21 4:13 GMT+02:00 Raymond Yau <superquad.vortex2 at gmail.com>:
>
>> > >
>> > > Hi,
>> > >
>> > > I've recently found that commit a551d91473 ("ALSA: hda - Use regmap
>> > > for
>> > > command verb caches, too") is somehow causing a pop noise on startup
>> > > when headphones are plugged in, but I couldn't figure out the exact
>> > > cause. Was this observed on other systems (mine is a Dell XPS13 9333,
>> > > Realtek ALC3661)? Does anyone have any idea of what the cause might
>> > > be?
>> >
>> > Are you sure that the commit is the culprit?  There are lots of other
>> > changes like the widget-based power saving.
>>
>> Quite sure. I did a bisection to get it. 5e56bcea5017 ("ALSA: hda -
>> Allow driver to add vendor-specific verbs for regmap") is OK.
>> Also, if I revert a551d91473 in the current linux-next tree, the
>> startup noise goes away.
>>
>> > In anyway, please give alsa-info.sh output.
>>
>> http://www.alsa-project.org/db/?f=7d283ebf64ca750482ec5ed6174a1b860fa70631
>>
>
> Did you use headset or headphone since the capture source control is used to
> determine the function of multi-role combo jack when the codec cannot
> dinstingush headset, headphone and mic jack ?

I've used simple headphones.