Date: Fri, 26 Nov 2010 06:59:23 +0100
Message-ID: <s5h7hg0sk04.wl%tiwai@suse.de>
From: Takashi Iwai <tiwai@suse.de>
To: Andrey Rahmatullin <wrar@wrar.name>
Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: Re: [BISECTED] 2.6.36 regression for ALC892
In-Reply-To: <20101125211803.GA4236@belkar.wrar.name>
References: <20101125211803.GA4236@belkar.wrar.name>
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At Fri, 26 Nov 2010 02:18:03 +0500,
Andrey Rahmatullin wrote:
> 
> Hello. I have an Intel H55 motherboard (ASUS P7H55-M PRO) with ALC892
> sound codec and a 3.5" front panel which doesn't support newer HDA pinout.
> So the panel is connected in "AC97" mode and this mode is set in the BIOS
> setup. In 2.6.35 and earlier the panel's headphones jack was working. Now
> it isn't. I've bisected this down to
> ce503f38bdb59c9175a9076215a3ba579fad4e64 (which is present in 2.6.36),
> reverting it helps. I've got "Too many connections" messages without this
> commit, indeed, but I had no problems (though I use only a pair of
> speakers connected to the rear panel and headphones in the front panel).

Obviously your front-panel doesn't suit with the HD-audio, and BIOS
still doesn't set the right pin defaults.  That is, it was a bug of
the driver that made your device working :)  Now, the driver does the
right thing.

A possible fix is to add quirks to override the wrong BIOS setup.
Please give alsa-info.sh outputs with and without the commit to figure
out the real pin configuration.


Takashi
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