From owner-freebsd-questions@FreeBSD.ORG Mon Jun 9 12:54:27 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 834D0106567C for ; Mon, 9 Jun 2008 12:54:27 +0000 (UTC) (envelope-from rvm@CBORD.com) Received: from smssmtp.cbord.com (mx1.cbord.com [24.39.174.11]) by mx1.freebsd.org (Postfix) with ESMTP id 34CD98FC14 for ; Mon, 9 Jun 2008 12:54:27 +0000 (UTC) (envelope-from rvm@CBORD.com) X-AuditID: ac1f0165-0000133400000330-0d-484d283b6f59 Received: from Email.cbord.com ([10.1.1.100]) by smssmtp.cbord.com with Microsoft SMTPSVC(6.0.3790.1830); Mon, 9 Jun 2008 08:55:23 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Date: Mon, 9 Jun 2008 08:53:08 -0400 Message-ID: In-Reply-To: <20080609041515.GB61635@sentinelchicken.net> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Whine when EHCI controller enabled in BIOS Thread-Index: AcjJ54ibF3QwaA/HS+6LjmtupmUC7AAR708g References: <7039ada60806082040s36afc2c8n4698402ac5d4ff29@mail.gmail.com> <20080609041515.GB61635@sentinelchicken.net> From: "Bob McConnell" To: "Jason Morgan" , X-Brightmail-Tracker: AAAAAA== Cc: Subject: RE: Whine when EHCI controller enabled in BIOS X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Jun 2008 12:54:27 -0000 On Behalf Of Jason Morgan > On Sun, Jun 08, 2008 at 09:40:17PM -0600, James wrote: >> I have a high pitched whine coming from my motherboard when the EHCI >> USB 2.0 controller is enabled in the BIOS. The whine only starts once >> FreeBSD 7.0-RELEASE is halfway through booting. >>=20 >> The whine also goes away when I plugin a USB drive in with EHCI >> controller enabled (usb keyboard and mouse being already plugged in). >>=20 >> Is this a hardware problem, or could it possibly be software related??? >=20 > I can't imagine this is a software issue. Sounds strange. Have you > tried to see if it isn't a fan issue? We have some Dell GX280s with a > bad batch of motherboards at my university---under specific conditions > (e.g., using certain video cards) the system fan will spin up 'til the > system sounds like it's about to take off. One of the device probes during startup could be sending what appears to be a full speed command to the fan controller. Bob McConnell