From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: High pitch noise produced when ACPI processor module loaded Date: Sun, 5 Oct 2003 12:24:52 +0200 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20031005102452.GA321@elf.ucw.cz> References: <001001c38404_27b959a0_2001a8c0@silverstone> <20030926100512.X64952@root.org> <20031002111232.GC14859@openzaurus.ucw.cz> <000401c38b23$fddef730$2401a8c0@INSPIRON> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <000401c38b23$fddef730$2401a8c0-laDPoAWcecs@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: Sander Wichers Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Hi! > > > > My inspiron 8600 (intel centrino/855PM) is producing a strange high > pitch > > > > sound which comes from within the machine (definitly not the speakers) > when > > > > the acpi processor module get's loaded. When I unload the processor > module > > > > the high pitch sound goes away. > > > Try running while1 program, see if it helps. > Yes!, when there is intensive processor activity the sound goes away. This unfortunately seems fairly normal; at least all four notebooks I had for testing produced some kind of cpu-related noise. > > If so you might want to disable CX sleep states. > What's the name of the directive? Or do I have to manually remove some > portions of the code? Manually remove... [And I'm not sure which portion, either ;-). Look into acpi's idle loop.] Pavel -- When do you have a heart between your knees? [Johanka's followup: and *two* hearts?] ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf