linux-kernel - Re: [Alsa-user] Pb with simultaneous SATA and ALSA I/O

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Message-Id: <1160085016.1607.26.camel@localhost.localdomain>
Date:	Thu, 05 Oct 2006 22:50:16 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Lee Revell <rlrevell@...-job.com>
Cc:	Dominique Dumont <domi.dumont@...e.fr>,
	alsa-user <alsa-user@...ts.sourceforge.net>,
	Francesco Peeters <Francesco@...Peeters.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [Alsa-user] Pb with simultaneous SATA and ALSA I/O

Ar Iau, 2006-10-05 am 17:12 -0400, ysgrifennodd Lee Revell:
> > Why do I hear distortion with PCM on SPDIF output and no distortion at
> > all on analog front output ? (both with the SB Live card)
> 
> No idea.  Maybe SPDIF playback is more sensitive to timing glitches.
> But the problem must be in the SATA driver not the emu10k1 driver.

Nothing to do with the SATA drivers, remember the S/PDIF and PCM bits
come off the same codec so the bits hitting the codec are the same and
thats way way outside the realm sata can affect.

If it's electrical noise though then power fluctuations or similar could
be to blame ?

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