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

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Date:	Mon, 16 Mar 2009 17:19:38 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Andreas Mohr <andi@...as.de>
Cc:	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

At Mon, 16 Mar 2009 17:06:35 +0100,
私 wrote:
> 
> At Mon, 16 Mar 2009 17:02:08 +0100,
> Andreas Mohr wrote:
> > 
> > Hi,
> > 
> > On Mon, Mar 16, 2009 at 04:34:05PM +0100, Takashi Iwai wrote:
> > > At Mon, 16 Mar 2009 15:50:36 +0100,
> > > Andreas Mohr wrote:
> > > > In the problematic case (using plughw),
> > > > whenever left channel / right channel sliders are equal, no sound gets recorded.
> > > 
> > > What are "sliders"?
> > 
> > Umm, volume level controls.
> 
> Yes but there are many of such :)
> 
> More exactly, from the driver perspective, there are no volume
> controls but only there are control elements with integer values.
> Do you mean "Capture Volume" control or which one?
> 
> And, is the behavior consistent regardless of the value high, i.e.
> the key is only whether the values for both channels are identical?

BTW, what if you record with the following definition?
Put the below to ~/.asoundrc

pcm.imix {
	type plug
	slave.pcm "hw"
	ttable.0.0 0.5
	ttable.0.1 -0.5
}

and record like

	% aplay -Dimix -c1 foo.wav


Takashi
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