linux-kernel - Re: [arch-general] Panic - no sound devices after upgrade

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Message-ID: <20110723142117.GA21836@linuxaudio.org>
Date:	Sat, 23 Jul 2011 14:21:17 +0000
From:	Fons Adriaensen <fons@...uxaudio.org>
To:	Adrian Knoth <adi@...omp.erfurt.thur.de>
Cc:	Tom Gundersen <teg@...m.no>,
	General Discussion about Arch Linux 
	<arch-general@...hlinux.org>, Takashi Iwai <tiwai@...e.de>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [arch-general] Panic - no sound devices after upgrade

On Sat, Jul 23, 2011 at 01:14:30AM +0200, Adrian Knoth wrote:

> > > If you want to try out Adrian's patch, I uploaded a kernel with the
> > > patch applied here:
> > > <https://dev.archlinux.org/~tomegun/kernel26-2.6.39.1.3-1.1-i686.pkg.tar.xz>.
> > 
> > Installed on two machines so far, more tomorrow.
> > Seems to have solved the problem :-) :-)
> 
> Good to know. I'll wait for your final confirmation and then commit it.

One problem: the gain settings have changed, now having a range of 0..64.
How do these values map to the internal ones (0..0xffff) ? I *hope* there
is value corresponding to EXACTLY 0x8000 (gain = 1) !!! The reason is
that MADI is bit-exact and is used to tranport other values than just
audio samples. This works of course only with exact unity gain.

BTW, why was this change made ? For pro users (are there other of this
card) this is a regression.

Ciao,

-- 
FA

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