From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266202AbUGULTk (ORCPT ); Wed, 21 Jul 2004 07:19:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266463AbUGULTk (ORCPT ); Wed, 21 Jul 2004 07:19:40 -0400 Received: from pD9EB1635.dip.t-dialin.net ([217.235.22.53]:40837 "EHLO undata.org") by vger.kernel.org with ESMTP id S266202AbUGULTj (ORCPT ); Wed, 21 Jul 2004 07:19:39 -0400 Subject: Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch From: Thomas Charbonnel To: Florian Schmidt Cc: "The Linux Audio Developers' Mailing List" , rlrevell@joe-job.com, Andrew Morton , linux-kernel In-Reply-To: <20040721125352.7e8e95a1@mango.fruits.de> References: <20040712163141.31ef1ad6.akpm@osdl.org> <1090306769.22521.32.camel@mindpipe> <20040720071136.GA28696@elte.hu> <200407202011.20558.musical_snake@gmx.de> <1090353405.28175.21.camel@mindpipe> <40FDAF86.10104@gardena.net> <1090369957.841.14.camel@mindpipe> <20040721125352.7e8e95a1@mango.fruits.de> Content-Type: text/plain Message-Id: <1090408695.5179.4.camel@localhost> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Wed, 21 Jul 2004 13:18:15 +0200 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Florian Schmidt wrote : > Hi, > > interesting that you mention the Xserver. I use a dual graphics card setup atm [Nvidia GF3 TI and some matrox pci card]. The nvidia card seems to work flawlessly even with HW accelleration [i use nvidias evil binary only drivers]. The matrox card OTH disturbs the soundcard severely. Whenever i have activity on my second monitor i get sound artefacts in jack's output [no cracklling, it's rather as if the volume is set to 0 for short moments and then back to normal]. There's a certain chance that this artefact produces an xrun. I suppose it's because the card is on the pci bus. > > I figured it's maybe an irq issue problem, but whatever slot i put the gfx card in - it made no difference [btw: how do i find out which resources this card uses? it is not shown by /proc/interrupts]. I also tried putting the soundcard in many different slots to maybe get it on higher prio irq, but it always gets irq 5 [according to /proc/interrupts].. > > Should i try a different 2nd gfx card? Should i avoid pci gfx cards at all costs? Will i just have to live w/o second monitor? How do i find out which hw resources X is really using? > > Florian Schmidt You could try to adjust the pci latency timer value of your graphic card and sound card, see this link for a paper on the subject by Daniel Robbins : http://www-106.ibm.com/developerworks/library/l-hw2.html Thomas