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

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Message-ID: <20090316120312.GA19299@rhlx01.hs-esslingen.de>
Date:	Mon, 16 Mar 2009 13:03:12 +0100
From:	Andreas Mohr <andi@...as.de>
To:	Andreas Mohr <andi@...as.de>
Cc:	Takashi Iwai <tiwai@...e.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 Sun, Mar 15, 2009 at 10:21:17AM +0100, Andreas Mohr wrote:
> Hi,
> 
> On Mon, Nov 24, 2008 at 03:35:10PM +0100, Takashi Iwai wrote:
> > At Sat, 22 Nov 2008 21:00:18 +0200,
> > Maxim Levitsky wrote:
> > > Finally, I found how to reproduce that bug,
> > > I mean to get normal volume on internal mic, I have to increase volume
> > > only on left or right channel.
> > > 
> > > So, this happens always, and _only_ when recording _mono_ sound from internal
> > > mic.
> > > 
> > > Since hardware doesn't support hardware mono input, tested with -D hw:0
> > > I suspect this to be alsa-lib bug, any ideas?
> > > Happens with arecord -D plughw:0 -c1 .
> > 
> > What does show with -v option?
> 
> OK, I could fully reproduce this now (sorry for the delay!).
> 
> Currently 2.6.28, u8.10, model acer-aspire, libasound2 1.0.17a-0ubuntu4,
> libasound2-plugins 1.0.17-0ubuntu5.

Same microphone behaviour on 2.6.29-rc8 (additionally remembered to enable
CONFIG_SND_HDA_HWDEP for further testing!), u9.04, model acer-aspire,
libasound2 1.0.18-1ubuntu7, libasound2-plugins 1.0.18-1ubuntu4
(yes, I've just done some monster upgrade).

Will try to eventually analyze things using your _HWDEP-related tools.


2.6.29-rc8, in contrast to several other kernel upgrade occasions,
seems pretty solid so far, BTW.

Andreas Mohr
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