Re: Quiet crackling noise at boot and after stopping music

[Takashi Iwai <tiwai@suse.de>]

On Wed, 06 Aug 2025 10:34:57 +0200,
Paul Menzel wrote:
> 
> Dear Takashi,
> 
> 
> Thank you so much for your instant reply with the solution.
> 
> 
> Am 06.08.25 um 10:20 schrieb Takashi Iwai:
> > On Wed, 06 Aug 2025 10:15:08 +0200, Paul Menzel wrote:
> 
> >> I believe the Realtek refactoring caused a regression on my Intel Kaby
> >> Lake laptop Dell XPS 13 9360. There is quiet crackling noise during
> >> boot, when GDM is started, and also after playing music is
> >> stopped. It’s reproducible with 6.16.0-04055-g14bed9bc81ba, that
> >> contains the sound subsystem pull request.
> >> 
> >> 177bf8620cf4 Merge tag 'sound-6.17-rc1' of
> >> git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
> >> 
> >> I uploaded the run of alsa-info [1]. I try to verify with plain 6.16 later.
> > 
> > It's likely because of the missing CONFIG_SND_HDA_CODEC_* selections.
> > Please set CONFIG_SND_HDA_CODEC_ALC269=m and
> 
> Indeed, I didn’t select this.
> 
> > CONFIG_SND_HDA_CODEC_HDMI_INTEL=m if not done yet.
> 
> I had selected this.
> 
> > Those were already set to default=y in the later PR for avoiding such
> > a pitfall.
> 
> I remember I tried to check which to select, and I ran `alsa-info` to
> find the codecs, but only found:
> 
>     Codec: Realtek ALC3246
> 
> As this didn’t match to any of the offerings, I didn’t select
> it. May I suggest to extend the Kconfig help texts with notes how to
> determine the correct module?

There are quite lots of different codec names, so we can't put all
them, unfortunately...

> Also, would the driver be able to detect, if no codec modules are
> selected and log a warning?

It still "works" with the generic HD-audio codec, as you already
noticed.


Takashi