linux-kernel - Re: intel hda regression: 2.6.33-rc{1,2}: hd-audio0 eats 25% CPU (according to top)

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Date:	Fri, 25 Dec 2009 18:32:05 +0200
From:	Sergei Trofimovich <slyich@...il.com>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Maciej Rutecki <maciej.rutecki@...il.com>,
	linux-kernel@...r.kernel.org,
	Éric Piel <eric.piel@...mplin-utc.net>
Subject: Re: intel hda regression: 2.6.33-rc{1,2}: hd-audio0 eats 25% CPU 
 (according to top)

On Fri, 25 Dec 2009 17:05:16 +0100
Takashi Iwai <tiwai@...e.de> wrote:

> It's a bit surprising that this resulted in the high CPU usage
> instead of erroneous behavior.  This should be rather a bug of
> codec chip...
> 
> Anyway, Segei, which codec is on your machine?  Is it Analog Device
> one? 
> IIRC, the one's on Maciej and Eric machines are AD codecs.
> If so, we can just revert the changes to patch_analog.c in that
> commit.

How can I check? alsamixer shows 
    Chip: Analog Devices AD1981
Not sure it's valid though.

It's a HP Compaq 2510p laptop.

00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
        Subsystem: Hewlett-Packard Company Device 30c9
(posted whole lspci output slightly earlier if needed)

-- 

  Sergei

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