Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756254AbXHJEuw (ORCPT ); Fri, 10 Aug 2007 00:50:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750965AbXHJEum (ORCPT ); Fri, 10 Aug 2007 00:50:42 -0400 Received: from mail.tmr.com ([64.65.253.246]:60825 "EHLO gaimboi.tmr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754925AbXHJEui (ORCPT ); Fri, 10 Aug 2007 00:50:38 -0400 Message-ID: <46BBEF90.7000808@tmr.com> Date: Fri, 10 Aug 2007 00:54:40 -0400 From: Bill Davidsen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.8) Gecko/20061105 SeaMonkey/1.0.6 MIME-Version: 1.0 To: Greg KH CC: Niels , linux-kernel@vger.kernel.org Subject: Re: Problems with USB disk References: <20070807211847.GA25391@kroah.com> In-Reply-To: <20070807211847.GA25391@kroah.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1933 Lines: 53 Greg KH wrote: > On Tue, Aug 07, 2007 at 10:26:15PM +0200, Niels wrote: >> Hi, >> >> I'm having problems with a new 500 GB USB disk. It works, but sometimes I >> get these in dmesg: >> >> >> usb 1-3: reset high speed USB device using ehci_hcd and address 2 >> usb 5-1: USB disconnect, address 2 >> drivers/usb/class/usblp.c: usblp0: removed >> sd 0:0:0:0: Device not ready: <6>: Sense Key : 0x2 [current] >> : ASC=0x4 ASCQ=0x2 >> end_request: I/O error, dev sda, sector 254148215 >> sd 0:0:0:0: Device not ready: <6>: Sense Key : 0x2 [current] >> : ASC=0x4 ASCQ=0x2 >> end_request: I/O error, dev sda, sector 252434023 >> EXT3-fs error (device sda1): ext3_find_entry: reading directory #15761836 >> offset 0 >> >> >> There's also a printer connected. This is on a pci/usb2 card. When the above >> happens, I get I/O errors. When I mount the drive next, there are errors >> and often missing files. Quite annoying! >> >> Kernel is 2.6.21 >> >> What's going on? > > You have a low voltage issue, or a bad cable. The device is > electronically disconnecting itself. Try using a externally-powered > hub, or a new cable. > I see the external drive becoming read-only, although I haven't checked the dmesg for the events, since other things in my system generate a bunch of output I have to wade through. New cable, separate power, doesn't do it under 2.6.20-* Fedora or 2.6.21.x kernel.org kernels. I'll check the dmesg next time it happens, but I doubt a kernel version change would heal the hardware issues you mention. -- Bill Davidsen "We have more to fear from the bungling of the incompetent than from the machinations of the wicked." - from Slashdot - 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/