linux-kernel - Re: [REGRESSION] "ALSA: HDA: Early Forbid of runtime PM" broke my laptop's internal audio

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Message-ID: <s5hv944fxrk.wl-tiwai@suse.de>
Date:   Tue, 17 Aug 2021 07:25:35 +0200
From:   Takashi Iwai <tiwai@...e.de>
To:     藍挺瑋 <lantw44@...il.com>
Cc:     alsa-devel@...a-project.org, harshapriya.n@...el.com,
        kai.vehmanen@...el.com, linux-kernel@...r.kernel.org,
        mcatanzaro@...hat.com, perex@...ex.cz, stable@...r.kernel.org,
        tiwai@...e.com
Subject: Re: [REGRESSION] "ALSA: HDA: Early Forbid of runtime PM" broke my laptop's internal audio

On Mon, 16 Aug 2021 18:57:03 +0200,
藍挺瑋 wrote:
> 
> 於 星期日，2021-08-15 於 11:20 +0200，Takashi Iwai 提到：
> > On Sat, 14 Aug 2021 16:02:36 +0200,
> > 藍挺瑋 wrote:
> > > 
> > > I am not sure if I should join this old thread, but it seems that I saw the
> > > same
> > > issue on my ASUS B23E laptop. It couldn't produce any sound after upgrading
> > > to
> > > Linux 5.10, and 'git bisect' shows it was broken by the same commit
> > > a0645daf16101bb9a6d87598c17e9a8b7bd60ea7.
> > > 
> > > I have tested the latest master branch (v5.14-rc4-322-gcceb634774ef) last
> > > week.
> > > It still had no sound. If I reverted the broken commit, sound worked.
> > 
> > > 
> > > alsa-info from the broken kernel:
> > > https://gist.github.com/lantw44/0660e059c488e3ff3d841bb03b371866
> > > 
> > > alsa-info from the working kernel:
> > > https://gist.github.com/lantw44/9367f425e4f5ba98cf12343cb90f3301
> > 
> > Thanks for the report.  A quick workaround be a patch like below.
> > Could you verify whether it fixes the problem?
> 
> Yes, it fixes the problem.

Thanks.  Now I submitted a final patch and will merge it for
5.14-rc7 pull request.


Takashi