Sound issues with the 5.10.x kernel (alsa)
Diederik de Haas
didi.debian at cknow.org
Mon Feb 8 07:50:39 EST 2021
On maandag 8 februari 2021 13:22:56 CET Stefan Wahren wrote:
> > TL;DR: I have a RPi 3B+ running pure Debian Bullseye arm64 (~from
> > raspi.debian.net), named rpi-mpd, connected via HDMI cable to my AV
> > Receiver.
> can you please confirm that the bcm2835-audio driver causing the issues?
How can I confirm that?
> > Playing music worked fine with kernel 5.9, but with 5.10.2-1 the music
> > (quality) became not good to quite horribly, because of (static) noise and
> > distortion.
> > With kernel version 5.10.9 (linux-image-5.10.0-2-arm64) it all seemed
> > fixed, but returned with 5.10.12 (linux-image-5.10.0-3-arm64) and is also
> > present with 5.10.13.
> I cannot explain why 5.10.9 works for you, but we had multiple
> regressions in 5.10. Currently i cannot see any of the fixes by Phil
> Elwell in linux-stable. Maybe they won't apply and needs to be backport
FTR: All the kernel versions I mentioned are the Debian kernel versions (and
thus also Debian's config).
> Just for reference here are the revelant patches:
> Could you please try?
I'll try. But it may take a while as I don't know how to (properly) do that.
And I'm guessing that building on a RPi3B+ isn't exactly fast. But I assume
I'm able to 'overcome' all that.
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