linux-kernel - Re: Regression: very quiet speakers on Thinkpad T570s

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Date:   Fri, 30 Nov 2018 17:00:38 +0100
From:   Takashi Iwai <tiwai@...e.de>
To:     Jeremy Cline <jcline@...hat.com>
Cc:     Kailang Yang <kailang@...ltek.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Tim Van den Eynde <redhat@...ynde.com>,
        alsa-devel@...a-project.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Regression: very quiet speakers on Thinkpad T570s

On Fri, 30 Nov 2018 15:49:17 +0100,
Jeremy Cline wrote:
> 
> Hi,
> 
> Some folks have reported on the Fedora bug tracker[0] that the laptop
> speaker volume is very low on the Thinkpad T570 when running a kernel
> that includes commit 61fcf8ece9b6 ("ALSA: hda/realtek - Enable Thinkpad
> Dock device for ALC298 platform").
> 
> alsa-info.sh from v4.15.4 (just before commit 61fcf8ece9b6 arrived in
> stable) and v4.19.4 with the issue present are attached to the bugzilla.
> I've also Cc'd Tim, who uploaded them and has the laptop in question.
> 
> [0] https://bugzilla.redhat.com/show_bug.cgi?id=1554304

Could you pinpoint which kernel version started showing the
regression, at least?  The diffs are fairly wide between 4.15 and
4.19.


thanks,

Takashi