From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261228AbVGST3c (ORCPT ); Tue, 19 Jul 2005 15:29:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261481AbVGST3c (ORCPT ); Tue, 19 Jul 2005 15:29:32 -0400 Received: from mail.kroah.org ([69.55.234.183]:41138 "EHLO perch.kroah.org") by vger.kernel.org with ESMTP id S261228AbVGST3b (ORCPT ); Tue, 19 Jul 2005 15:29:31 -0400 Date: Tue, 19 Jul 2005 15:29:18 -0400 From: Greg KH To: Karim Yaghmour Cc: linux-kernel Subject: Re: Weird USB errors on HD Message-ID: <20050719192918.GA19803@kroah.com> References: <42DD2EA4.5040507@opersys.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <42DD2EA4.5040507@opersys.com> User-Agent: Mutt/1.5.8i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 19, 2005 at 12:47:32PM -0400, Karim Yaghmour wrote: > > I have a usb-attached HD that I use from time to time. When it's connected > to my desktop through a hub it works flawlessly. When connected to my Dell > D600 Laptop, however, it sometimes randomly exhibits a loud click (as if the > heads went berzerk) and the device goes unrecognized (i.e. the USB layer drops > the device and then redetects it again; meanwhile there is FS corruption.) > > The same behavior happens with 2.4.x and 2.6.x > > In /var/log/messages I see something like: > hub 3-0:1.0: over-current change on port 1 > hub 1-0:1.0: over-current change on port 3 > ... > usb 1-3: USB disconnect, address 2 > usb 1-3: new high speed USB device using ehci_hcd and address 3 Ugh, you have a bad device or power supply, or aren't giving it enough power to drive the thing. Nothing we can do in Linux for that, sorry. Buy a wall-powered usb hub, that usually helps. Good luck, greg k-h