linux-kernel - Re: [2.6.33-rc1] [SOUND] HDA: high cpu usage, noise

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Date:	Wed, 23 Dec 2009 16:02:49 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Éric Piel <eric.piel@...mplin-utc.net>
Cc:	Maciej Rutecki <maciej.rutecki@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	alsa-devel@...a-project.org, perex@...ex.cz,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [2.6.33-rc1] [SOUND] HDA: high cpu usage, noise

At Wed, 23 Dec 2009 15:27:08 +0100,
Éric Piel wrote:
> 
> Op 22-12-09 10:17, Takashi Iwai schreef:
> :
> >>> Another thing to try is to replace the whole HD-audio stack with the
> >>> last working one (was it 2.6.32?), and check whether it works with
> >>> 2.6.32 core.
> >> Could you give more details on how to do this?
> >> Does it consist in taking the sound/ directory of 2.6.32 and copying it
> >> over 2.6.33-rc1 ? Or less files?
> > 
> > I'd try first only sound/pci/hda/* files.
> > 
> Brute-force reverting these files to the version of 2.6.32.2 does fix
> the problem.

OK, that's good to know.

> When I find time, I'll try to git bisect on this particular directory...
> but anyone willing to try to beat me at this is welcome, as Christmas is
> going to keep me rather busy ;-)

bisecting would be indeed helpful.  It needs to be done only in the
above directory, so there shouldn't be much.


thanks,

Takashi
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