linux-kernel - Re: [REGRESSION bisected] Sound goes too fast due to commit 7b3a177b0

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Date:	Wed, 14 Apr 2010 08:08:42 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Éric Piel <Eric.Piel@...mplin-utc.net>
Cc:	Jaroslav Kysela <perex@...ex.cz>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	alsa-devel@...a-project.org
Subject: Re: [REGRESSION bisected] Sound goes too fast due to commit 7b3a177b0

At Tue, 13 Apr 2010 23:54:26 +0200,
Éric Piel wrote:
> 
> Hello,
> 
> Since 2.6.34-rc*, I have a regression on alsa which prevents the sound
> to be played correctly. When playing, the music goes too fast, skipping
> some parts. Typically, it's very easy to reproduce by doing:
> time mplayer -endpos 30 sound-file-which-lasts-more-than-thirty-sec.mp3
> 
> If the wall clock is less than 30s, you have the bug. With my intel-hda
> (AD1981), it's reliably reproducible: it gives ~27s, instead of the
> normal ~31s.
> 
> After bisection, it turns out that it is commit
> 7b3a177b0d4f92b3431b8dca777313a07533a710, aka "ALSA: pcm_lib: fix
> "something must be really wrong" condition" which caused this
> regression. Reverting it on top of 2.6.34-rc3+ fixes the problem.

What happens if you pass position_fix=1 option to snd-hda-intel?
Is it via PulseAudio or other backend?


thanks,

Takashi
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