linux-kernel - Re: sound skipping regression introduced in 2.6.30-rc8

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Date:	Thu, 11 Jun 2009 02:58:45 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Sven Köhler <sven.koehler@...il.com>
Cc:	David Miller <davem@...emloft.net>, linux-kernel@...r.kernel.org
Subject: Re: sound skipping regression introduced in 2.6.30-rc8

At Wed, 10 Jun 2009 21:37:41 +0200,
Sven Köhler wrote:
> 
> David Miller schrieb:
> > This change:
> > 
> > commit c87d9732004b3f8fd82d729f12ccfb96c0df279e
> > Author: Takashi Iwai <tiwai@...e.de>
> > Date:   Wed May 27 10:53:33 2009 +0200
> > 
> >     ALSA: Enable PCM hw_ptr_jiffies check only in xrun_debug mode
> >     
> >     The PCM hw_ptr jiffies check results sometimes in problems when a
> >     hardware doesn't give smooth hw_ptr updates.  So far, au88x0 and some
> >     other drivers appear not working due to this strict check.
> >     However, this check is a nice debug tool, and the capability should be
> >     still kept.
> >     
> >     Hence, we disable this check now as default unless the user enables it
> >     by setting the xrun_debug mode to the specific stream via a proc file.
> >     
> >     Signed-off-by: Takashi Iwai <tiwai@...e.de>
> > 
> > causes sound to skip while listing to MP3s using mplayer on
> > intel8x0 sound cards.
> 
> I'm also affected by the issue described above.

Which hardware?

> Can somebody point out, how I can set this xrun_debug thing or can
> somebody provide a patch that reverts the change?

Did you read my reply to David?


Takashi
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