linux-kernel - Re: [alsa-devel] Bugs on aspire one A150

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Message-ID: <20090316145036.GA26358@rhlx01.hs-esslingen.de>
Date:	Mon, 16 Mar 2009 15:50:36 +0100
From:	Andreas Mohr <andi@...as.de>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Andreas Mohr <andi@...as.de>,
	Maxim Levitsky <maximlevitsky@...il.com>,
	linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
	Kernel Testers List <kernel-testers@...r.kernel.org>
Subject: Re: [alsa-devel] Bugs on aspire one A150

Hi,

On Mon, Mar 16, 2009 at 03:42:54PM +0100, Takashi Iwai wrote:
> At Mon, 16 Mar 2009 15:31:58 +0100,
> Andreas Mohr wrote:
> > 
> > Hi,
> > 
> > On Mon, Mar 16, 2009 at 03:18:20PM +0100, Takashi Iwai wrote:
> > > So, the following is also problematic
> > > 
> > > 	% arecord -fdat -c1 -Dplughw ng.wav
> > > 
> > > while the below works?
> > > 
> > > 	% arecord -fdat -Dhw good.wav
> > 
> > Indeed, the above has problems with problematic slider positions whereas
> > the below never has.
> 
> Err, could you be more specific about "slider positions"?

Hmm, I thought I was... (elsewhere)

In the problematic case (using plughw),
whenever left channel / right channel sliders are equal, no sound gets recorded.
IOW, there has to be a huge difference (in either direction)
between left and right channel slider to hear anything. And that is Not
A Good Feature to have ;)


> > > Does the conversion by sox from good.wav to a mono-channel file work?
> > 
> > I assume I should be using
> > sox good.wav -c1 good1.wav
> > ?
> > 
> > If so, yes, this works, audio is there.
> 
> Just to be sure - what about below?
> 	sox good.wav -c1 good1.wav mixer 0.5,0.5

Yep, still works.

Thanks,

Andreas
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