linux-kernel - Re: ALSA: Sound barely audible since 2.6.37-rc1+

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Date:	Mon, 17 Jan 2011 16:33:07 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Avinash Kurup <kurup.avinash@...il.com>
Cc:	david.henningsson@...onical.com, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Subject: Re: ALSA: Sound barely audible since 2.6.37-rc1+

At Mon, 17 Jan 2011 20:54:29 +0530,
Avinash Kurup wrote:
> 
> Hi Takashi,
> 
> The sound on my computer since 2.6.37-rc1+ is barely audible (extremely
> soft), The sound
> remains the same even on increasing it on the desktop or the application.
> 
> On accessing alsa-mixer I get the error, cannot load mixer controls: Invalid
> argument.
> 
> I bisected the problem to this commit.
> 
> 03b7a1ab557efe34e8f79b78660e514bd7374248 is the first bad commit
> commit 03b7a1ab557efe34e8f79b78660e514bd7374248
> Author: David Henningsson <david.henningsson@...onical.com>
> Date:   Tue Nov 9 14:35:30 2010 +0100
> 
>     ALSA: HDA: Create mixers on ALC887
> 
>     BugLink: http://launchpad.net/bugs/669092
> 
>     ALC887 does not have any volume control ability on the mixer NIDs,
>     so put the volume controls on the dac NIDs instead. Without this
>     patch, ALC887 users cannot use alsamixer at all.
> 
>     Cc: stable@...nel.org
>     Signed-off-by: David Henningsson <david.henningsson@...onical.com>
>     Signed-off-by: Takashi Iwai <tiwai@...e.de>
> 
> :040000 040000 f1e34cf6301ebd2ee2108af5195e2786c135e348
> 1e5d012759d201af4102a822dd94328080aa3a0b M sound
> 
> Other related info...
> ----------------------
> 
> avinash@...rolink:~/GIT_KERNEL_REPO/linux-2.6$ uname -a
> Linux neurolink 2.6.37-rc1+ #164 SMP Mon Jan 17 20:15:43 IST 2011 x86_64
> GNU/Linux

Could you get alsa-info.sh output (run with --no-upload option) on
the old working kernel?  If so, please attach the output.
Anyway, please give alsa-info.sh output on the broken kernel, too.


thanks,

Takashi
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