Re: pulseaudio / alc1220 sound clicks interruptions etc

On 2025-06-03 06:49 +0200, Tomek CEDRO wrote:
> Hello world :-)
> 
> I just switched to Intel Ultra 9 285K platform with ASUS mainboard
> which has currently very popular Realtek ALC1220 HDA sound codec. In
> theory this codec supports 32-bit sound with 192kHz samplerate
> playback (and some lower params for recording).
> 
> I am experiencing really annoying sound clicks and glitches /
> interruptions on FreeBSD that are hard to stand when using anything
> beyond 16-bit 44.1kHz sound. At 48kHz glitches are rare but already
> show up, at 96 and 192kHz sound is unusable. No problems like this on
> windoze.There is one USB audio card (KM-BT1) that allows me to connect
> over bluetooth headphones and it has the same issues.

Do you think it's related to either of these?

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=261169
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=263385

I'm on Alder Lake and this has been a constant issue.  It's the Realtek ALC897 
the popping is worse when playing video but when the system hits certain types 
of load it's a lot worse.

If you boot in verbose you can see the buffer errors causing the clicking 
sounds.


> Most likely PulseAudio is to blame as it also does some conversions on
> the fly and may not catch up. Also played with most of the PA

It happens with all sound devices for me.  USB, optical out, OSS, PulseAudio 
doesn't matter the device or transport.

I suspect it's the same issue I've been having I haven't tried the latest audio 
stack but previous upgrades either made it marginally better or worse.


Amar.