Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757332Ab1CRT1G (ORCPT ); Fri, 18 Mar 2011 15:27:06 -0400 Received: from netrider.rowland.org ([192.131.102.5]:58667 "HELO netrider.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1756866Ab1CRT0x (ORCPT ); Fri, 18 Mar 2011 15:26:53 -0400 Date: Fri, 18 Mar 2011 15:26:52 -0400 (EDT) From: Alan Stern X-X-Sender: stern@netrider.rowland.org To: Justin Piszcz cc: linux-usb@vger.kernel.org, , , Alan Piszcz Subject: Re: 2.6.38: XFS/USB/HW issue, or failing USB stick? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1650 Lines: 42 On Fri, 18 Mar 2011, Justin Piszcz wrote: > > The stick didn't "fail" in any obvious way, but for some reason it was > > disconnected from the USB bus. (If it initiated that disconnect by > > itself, I guess you could consider that a failure.) Maybe it was > > something as simple as overheating causing a loss of electrical contact > > between the connector and the pins in the USB port. > > It is possible, but the box is kept cool: Then something else caused the disconnection. Maybe a bug in the USB stick's firmware. > >> Mar 18 08:33:06 atom [ 2283.963059] usb 1-1: new high speed USB device using ehci_hcd and address 4 > >> Mar 18 08:33:06 atom [ 2284.080647] usb 1-1: New USB device found, idVendor=0325, idProduct=ac02 > >> Mar 18 08:33:06 atom [ 2284.080707] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 > >> Mar 18 08:33:06 atom [ 2284.080752] usb 1-1: Product: R2_TURBO > >> Mar 18 08:33:06 atom [ 2284.080794] usb 1-1: Manufacturer: OCZ Technology > >> Mar 18 08:33:06 atom [ 2284.080831] usb 1-1: SerialNumber: (removed) > > > > And then 22 seconds later it reconnected. > > > > Alan Stern > > > > Very strange, could some USB option cause this? No. > I guess next step is use > ext2 and a different stick in the same port to see if I can get it to recur. > Then if it happens again, try a different port. Okay, go ahead and see what happens. Alan Stern -- 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/