linux-kernel - Re: [Bisected Regression] snd-intel-hda no longer produces sound on Toshiba Satellite A100

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Date:	Thu, 08 May 2008 20:48:43 +0200
From:	Jacek Luczak <difrost.kernel@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	Takashi Iwai <tiwai@...e.de>,
	Vefa Bicakci <bicave@...eronline.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [Bisected Regression] snd-intel-hda no longer produces sound
 on Toshiba Satellite A100

Rafael J. Wysocki pisze:
> On Sunday, 4 of May 2008, Takashi Iwai wrote:
>> At Sat, 03 May 2008 23:57:29 +0300,
>> Vefa Bicakci wrote:
>>> Hello,
>>>
>>> I am using Debian Sid on a Toshiba Satellite A100 series laptop.
>>> This laptop has an Intel HDA sound card. It uses the Realtec codecs.
>>> After modprobe'ing snd-intel-hda, the following appears in dmesg:
>>> "hda_codec: Unknown model for ALC861, trying auto-probe from BIOS..."
>>>
>>> The sound output used to work fine with 2.6.24.x and 2.6.25. In an
>>> unrelated move, I decided to give 2.6.25-gitX series a try; however,
>>> I was very sad to notice that sound output became disabled. Programs
>>> such as ogg123 or Amarok seem to play, but there is no sound output,
>>> only silence. I have checked multiple times that no new mixer settings
>>> appeared because of a possible snd-hda-intel update...
>>>
>>> I bisected the differences between 2.6.25 and HEAD (as of 28th of
>>> April) to find the problematic git commit. The git commit with the
>>> following ID and description disables the sound output completely:
>>>
>>> --- 8< ---
>>> commit f6c7e5461e9046445d50c5c7a9a4587824239623
>>> [ALSA] hda-codec - Fix auto-configuration of Realtek codecs
>>> --- >8 ---
>>>
>>> I believe that this is an important regression, and I would like
>>> to debug this problem. Trying out patches is no problem for me.
>> This is a known issue and should have been already fixed on sound
>> tree.  Try to pull the following git tree (for-linus branch):
>>     git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 for-linus
> 
> Has the fix already reached the Linus' tree?
> 

Yes, it has.

-Jacek
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