linux-kernel - Re: linux-6.4 alsa sound broken

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Date:   Mon, 1 May 2023 21:08:41 +0800
From:   Jeff Chua <jeff.chua.linux@...il.com>
To:     Bagas Sanjaya <bagasdotme@...il.com>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Oswald Buddenhagen <oswald.buddenhagen@....de>,
        Takashi Iwai <tiwai@...e.de>, Jaroslav Kysela <perex@...ex.cz>,
        Linux ALSA Subsystem Development 
        <alsa-devel@...a-project.org>,
        Linux Regressions <regressions@...ts.linux.dev>
Subject: Re: linux-6.4 alsa sound broken

On Mon, May 1, 2023 at 12:36 PM Bagas Sanjaya <bagasdotme@...il.com> wrote:
>
> On Mon, May 01, 2023 at 11:59:12AM +0800, Jeff Chua wrote:
> > Latest git pull from Linus's tree ... playing a simple sound file will
> > resulted in a lot of echo.
> >
> > Running on Lenovo X1 with ..
> > 00:1f.3 Audio device: Intel Corporation Alder Lake PCH-P High
> > Definition Audio Controller (rev 01)
> >
> > I've bisected and reverted the following patch fixed the problem.
> >
> > commit 9f656705c5faa18afb26d922cfc64f9fd103c38d
>
> Thanks for the regression report. However, where is your dmesg and/or ALSA log
> when the regression occurs? What is the playback test file?

There's no error in dmesg.

Test file is /usr/share/sounds/alsa/Side_Right.wav

>
> FYI, 9f656705c5faa1 ("ALSA: pcm: rewrite snd_pcm_playback_silence()") is
> originated as [1/2] of patch series that pokes around the auto-silencer. The
> other patch ([2/2]) got NAKed since autofilling buffer should have been done in
> alsa-lib (still to be discussed) [1].
>
> Anyway, I'm adding this to regzbot:
>
> #regzbot ^introduced 9f656705c5faa1
> #regzbot title Much echoing when playing sound files on Intel Alder Lake PCH-P Audio Controller
>
> Thanks.
>
> [1]: https://lore.kernel.org/all/bb342e84-b468-8adc-6688-88da2c857da1@perex.cz/
>
> --
> An old man doll... just what I always wanted! - Clara