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

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Date:   Tue, 17 Aug 2021 00:57:03 +0800
From:   藍挺瑋 <lantw44@...il.com>
To:     Takashi Iwai <tiwai@...e.de>
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

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.

> 
> 
> Takashi
> 
> --- a/sound/pci/hda/patch_via.c
> +++ b/sound/pci/hda/patch_via.c
> @@ -1041,6 +1041,7 @@ static const struct hda_fixup via_fixups[] = {
>  };
>  
>  static const struct snd_pci_quirk vt2002p_fixups[] = {
> +       SND_PCI_QUIRK(0x1043, 0x13f7, "Asus B23E", VIA_FIXUP_POWER_SAVE),
>         SND_PCI_QUIRK(0x1043, 0x1487, "Asus G75", VIA_FIXUP_ASUS_G75),
>         SND_PCI_QUIRK(0x1043, 0x8532, "Asus X202E", VIA_FIXUP_INTMIC_BOOST),
>         SND_PCI_QUIRK_VENDOR(0x1558, "Clevo", VIA_FIXUP_POWER_SAVE),