From: Diederik de Haas <didi.debian@cknow.org>
To: linux-rpi-kernel@lists.infradead.org, devel@driverdev.osuosl.org,
Stefan Wahren <stefan.wahren@i2se.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: Sound issues with the 5.10.x kernel (alsa)
Date: Mon, 08 Feb 2021 13:50:39 +0100 [thread overview]
Message-ID: <4138983.jq09TEf7Ks@bagend> (raw)
In-Reply-To: <b0be09a0-5ec3-b716-4b77-1dde43719273@i2se.com>
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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
> manually.
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:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/d
> rivers/staging/vc04_services?h=next-20210205&id=96ae327678eceabf455b11a88ba1
> 4ad540d4b046
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/d
> rivers/staging/vc04_services?h=next-20210205&id=88753cc19f087abe0d39644b844e
> 67a59cfb5a3d
>
> 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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next prev parent reply other threads:[~2021-02-08 13:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3165951.nLcn7dHqa8@bagend>
2021-02-08 12:22 ` Sound issues with the 5.10.x kernel (alsa) Stefan Wahren
2021-02-08 12:50 ` Diederik de Haas [this message]
2021-02-16 0:12 ` Diederik de Haas
2021-02-16 14:38 ` Diederik de Haas
2021-03-28 0:48 ` Ryutaroh Matsumoto
2021-03-28 5:58 ` Ryutaroh Matsumoto
2021-03-28 9:29 ` Stefan Wahren
2021-03-28 23:13 ` Ryutaroh Matsumoto
2021-03-28 23:17 ` Ryutaroh Matsumoto
[not found] ` <20210208.230026.1706784668119437570.ryutaroh@ict.e.titech.ac.jp>
2021-02-08 14:31 ` Diederik de Haas
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