Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269072AbUJUMAb (ORCPT ); Thu, 21 Oct 2004 08:00:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268769AbUJTRVo (ORCPT ); Wed, 20 Oct 2004 13:21:44 -0400 Received: from mxfep02.bredband.com ([195.54.107.73]:901 "EHLO mxfep02.bredband.com") by vger.kernel.org with ESMTP id S268702AbUJTRNh convert rfc822-to-8bit (ORCPT ); Wed, 20 Oct 2004 13:13:37 -0400 To: Lee Revell Cc: Pavel Machek , "Yu, Luming" , linux-kernel Subject: Re: High pitched noise from laptop: processor.c in linux 2.6 References: <3ACA40606221794F80A5670F0AF15F8405D3BF5B@pdsmsx403> <20041018114109.GC4400@openzaurus.ucw.cz> <20041020154718.GD26439@elf.ucw.cz> <1098291205.1429.76.camel@krustophenia.net> From: =?iso-8859-1?q?M=E5ns_Rullg=E5rd?= Date: Wed, 20 Oct 2004 19:13:15 +0200 In-Reply-To: <1098291205.1429.76.camel@krustophenia.net> (Lee Revell's message of "Wed, 20 Oct 2004 12:53:25 -0400") Message-ID: User-Agent: Gnus/5.1006 (Gnus v5.10.6) XEmacs/21.4 (Security Through Obscurity, linux) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1110 Lines: 28 Lee Revell writes: > On Wed, 2004-10-20 at 12:37, M?ns Rullg?rd wrote: >> I've noticed my laptop makes a slight noise whenever there's heavy >> network traffic. Maybe that could be used to control the pitch even >> without a kernel hack. > > Well, in your case the bad capacitors might be in the NIC. The ethernet > phones at my last job were so cheaply made that you could hear it ARPing > through your computer speakers. I have and old Alphastation where the onboard sound card picks up all sorts of noise. If you connect some speakers everything gets it's own special noise, from cache misses to SCSI traffic. > I bet you could actually identify the singing capacitor using a > telephone toner wand. IMHO this is a bad enough problem to RMA it. Not really, it's barely noticeable in a quiet room. -- M?ns Rullg?rd mru@mru.ath.cx - 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/