Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932292AbWJEVp7 (ORCPT ); Thu, 5 Oct 2006 17:45:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932252AbWJEVpO (ORCPT ); Thu, 5 Oct 2006 17:45:14 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:3720 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S932292AbWJEVpL (ORCPT ); Thu, 5 Oct 2006 17:45:11 -0400 Subject: Re: [Alsa-user] Pb with simultaneous SATA and ALSA I/O From: Lee Revell To: Alan Cox Cc: Dominique Dumont , Francesco Peeters , alsa-user , linux-kernel In-Reply-To: <1160085133.1607.29.camel@localhost.localdomain> References: <877izsp3dm.fsf@gandalf.hd.free.fr> <13158.212.123.217.246.1159186633.squirrel@www.fampeeters.com> <87y7rusddc.fsf@gandalf.hd.free.fr> <1160081110.2481.104.camel@mindpipe> <1160085133.1607.29.camel@localhost.localdomain> Content-Type: text/plain Date: Thu, 05 Oct 2006 17:45:36 -0400 Message-Id: <1160084737.2481.112.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.6.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 960 Lines: 23 On Thu, 2006-10-05 at 22:52 +0100, Alan Cox wrote: > Ar Iau, 2006-10-05 am 16:45 -0400, ysgrifennodd Lee Revell: > > I've heard that some motherboards do evil stuff like implementing legacy drive > > access modes using SMM which would cause dropouts without xruns > > reported. > > They don't. SATA causes audio dropouts on some systems because its fast > enough to starve the audio device of regular enough access to the PCI > bus. If that is a problem the audio device should be tuning PCI > latencies > OK. In fact the Windows driver and IIRC the OSS driver do tune PCI latencies. But that can't be the problem here if analog playback is unaffected. Sounds like electrical noise could be the issue... Lee - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/