linux-kernel - [REGRESSION][BISECTED] Audio volume issues since 4178d78cd7a8

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Message-ID: <c930b6a6-64e5-498f-b65a-1cd5e0a1d733@heusel.eu>
Date: Mon, 16 Sep 2024 18:39:40 +0200
From: Christian Heusel <christian@...sel.eu>
To: Christoffer Sandberg <cs@...edo.de>, 
	Werner Sembach <wse@...edocomputers.com>, Takashi Iwai <tiwai@...e.de>
Cc: regressions@...ts.linux.dev, linux-kernel@...r.kernel.org, 
	Jerry <jerryluo225@...il.com>, Jaroslav Kysela <perex@...ex.cz>, linux-sound@...r.kernel.org
Subject: [REGRESSION][BISECTED] Audio volume issues since 4178d78cd7a8

Hello everyone,

James reports a regression with his System76 Pangolin (pang14) laptop
where the audio became way too loud and 3% loudness sound like 50%
before. The issue initially occurred when updating from 6.10.9 to
6.10.10. while the rest of the system config stays unchanged.

We have bisected the issue together to the following commit:

    4178d78cd7a8 ("ALSA: hda/conexant: Add pincfg quirk to enable top speakers on Sirius devices")

We also verified that the issue is present with the latest linux
mainline kernel (6.11rc7-1 at the time) and that reverting the above
commit on top of mainline fixes the issue.

Now looking at the code I do not understand where the issue could be
caused as apparently it just adds a quirk for a totally different
hardware, but maybe you can find out more about this!

Attached you can find a dmesg of a working boot (6.11-1.1) which has the
patch reverted and a failing boot (6.11.arch1-1). We're happy to test
patches or provide more debug outputs :)

Reported-by: Jerry <jerryluo225@...il.com>
Bisected-by: Christian Heusel <christian@...sel.eu>

Cheers,
Chris

View attachment "dmesg-reverted.log" of type "text/plain" (92216 bytes)

View attachment "dmesg-broken.log" of type "text/plain" (91996 bytes)

Download attachment "signature.asc" of type "application/pgp-signature" (834 bytes)