Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760654AbYCESDi (ORCPT ); Wed, 5 Mar 2008 13:03:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755266AbYCESDB (ORCPT ); Wed, 5 Mar 2008 13:03:01 -0500 Received: from gateway.drzeus.cx ([85.8.24.16]:36829 "EHLO smtp.drzeus.cx" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754188AbYCESC7 (ORCPT ); Wed, 5 Mar 2008 13:02:59 -0500 Date: Wed, 5 Mar 2008 19:01:25 +0100 From: Pierre Ossman To: Jeremy Fitzhardinge Cc: Alan Jenkins , linux-kernel@vger.kernel.org Subject: Re: [RFC][PATCH] cpuidle: avoid singing capacitors Message-ID: <20080305190125.7417d4ff@mjolnir.drzeus.cx> In-Reply-To: <47CED91F.4020106@goop.org> References: <493b45a1-bb40-4e3c-9a8e-4b6ee7b8fdc3@b1g2000hsg.googlegroups.com> <20080301132924.0dc22b36@mjolnir.drzeus.cx> <47CED91F.4020106@goop.org> X-Mailer: Claws Mail 3.3.1 (GTK+ 2.12.8; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 880 Lines: 23 On Wed, 05 Mar 2008 09:32:15 -0800 Jeremy Fitzhardinge wrote: > > More likely inductors, I think. The coils can vibrate against the coil > if they haven't been properly potted in something. Capacitors don't > really have anything which can "sing". > I have no idea. Previous reports of this behaviour have always been described as "singing" capacitors and explained by some piezoelectric effect. Rgds -- -- Pierre Ossman Linux kernel, MMC maintainer http://www.kernel.org PulseAudio, core developer http://pulseaudio.org rdesktop, core developer http://www.rdesktop.org -- 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/