Date: Fri, 27 Nov 2009 11:45:46 +0100
Message-ID: <s5hocmo1c11.wl%tiwai@suse.de>
From: Takashi Iwai <tiwai@suse.de>
To: Jiri Slaby <jirislaby@gmail.com>
Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
       mm-commits@vger.kernel.org, Jaroslav Kysela <perex@perex.cz>,
       alsa-devel@alsa-project.org, fengguang.wu@intel.com
Subject: Re: ugly sound output (intel-hda) [was: mmotm 2009-11-24-16-47 uploaded]
In-Reply-To: <4B0FAB00.9060805@gmail.com>
References: <200911250111.nAP1BFg5030254@imap1.linux-foundation.org>
	<4B0FAB00.9060805@gmail.com>
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At Fri, 27 Nov 2009 11:33:36 +0100,
Jiri Slaby wrote:
> 
> On 11/25/2009 01:47 AM, akpm@linux-foundation.org wrote:
> > The mm-of-the-moment snapshot 2009-11-24-16-47 has been uploaded to
> 
> Hi, when I boot into that kernel, I hear, since the boot phase, short
> scratches repeatedly every (just a guess) 100 ms.
> 
> # cat /proc/asound/cards
>  0 [Intel          ]: HDA-Intel - HDA Intel
>                       HDA Intel at 0xffa74000 irq 29
> 
> # cat /proc/asound/card0/codec#2

Could you give rather alsa-info.sh output (run with --no-upload option)?


> It's a regression against, I think, 2009-11-13-19-59.

There aren't so many fundamental changes since Nov. 13.
The major ones are for Intel HDMI, but it should be irrelevant in your
case.

The changes in patch_sigmatel.c since then are:

d56757abc11a21996d9839c0d4e3b2c3666cd318
   ALSA: hda - Replace the rest of jack-detections with snd_hda_jack_detect()

8af3aeb498197f6fdf5acc913ffe8a392cb921c9
    ALSA: hda - Fix detection of dual headphones

b4e818768d50a5b7aa1635676839682bcf0691b6
    ALSA: hda - Fix mute-LED sync on HP laptops with IDT92HD83xxx codecs

Could you try to revert them?  The patches are found in sound git tree
  git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git
or linux-next.


thanks,

Takashi
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