From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751104AbVKLDC3 (ORCPT ); Fri, 11 Nov 2005 22:02:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751109AbVKLDC3 (ORCPT ); Fri, 11 Nov 2005 22:02:29 -0500 Received: from mustang.oldcity.dca.net ([216.158.38.3]:17552 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S1751104AbVKLDC2 (ORCPT ); Fri, 11 Nov 2005 22:02:28 -0500 Subject: Re: CM8738 audio hampering while playing video on G450 PCI graphic card From: Lee Revell To: Mark Hurenkamp Cc: linux-kernel@vger.kernel.org In-Reply-To: <200511120241.54383.mark.hurenkamp@xs4all.nl> References: <200511120241.54383.mark.hurenkamp@xs4all.nl> Content-Type: text/plain Date: Fri, 11 Nov 2005 22:00:43 -0500 Message-Id: <1131764444.11279.15.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.4.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2005-11-12 at 02:41 +0100, Mark Hurenkamp wrote: > Now whenever there's a lot of activety (like scrolling down when I'm > browsing on a news site like slashdot, or playing video) on the G450 (both in > accelerated mode, as well as in unaccelerated framebuffer mode), the audio > (onboard CMedia) starts to hamper. This happens regardless wether I'm using > alsa, or oss. (using mplayer to play an mp3, but also with DivX movies > the same problem occurs). Sounds like a "singing capacitor". Check the LKML archives. It's fundamentally a hardware problem caused by vendor greed which leads them to cheap out on components, compounded by only testing on Windows which has a dynamic timer tick. This can often be worked around by setting HZ=100 but you'll take a performance and timing granularity hit. Lee