Sound issues with the 5.10.x kernel (alsa)
stefan.wahren at i2se.com
Mon Feb 8 07:22:56 EST 2021
Am 08.02.21 um 12:47 schrieb Diederik de Haas:
> This is basically me forwarding the bug I reported on Debian's BTS:
> 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?
> 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
> 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
Just for reference here are the revelant patches:
Could you please try?
> I can consistently reproduce this issue, rebooting into 5.10.9 and playing
> music is fine again, so I *think* this is not a local issue.
> This ML is the closest I can think of as 'upstream', so hopefully more insight
> can be accomplished here ... and a fix.
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