linux-kernel - Re: USB mass storage fails to register on kernel 2.6.32

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Date:	Sun, 4 Jul 2010 09:02:55 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Paul Sheer <p@...8bug.com>
cc:	Kernel development list <linux-kernel@...r.kernel.org>,
	Pete Zaitcev <zaitcev@...hat.com>,
	<linux-usb@...ts.sourceforge.net>,
	<dbrownell@...rs.sourceforge.net>, <johannes@...felt.com>,
	Matthew Dharm <mdharm-usb@...-eyed-alien.net>,
	<gregkh@...e.de>, <paulsheer@...il.com>
Subject: Re: USB mass storage fails to register on kernel 2.6.32

On Sun, 4 Jul 2010, Paul Sheer wrote:

> Hi there,
> 
> I have a Samsung Story external USB-2.0 1.5TB drive that fails to
> detect as a device in more recent kernel versions. Full kmsg details
> are below. Note that a USB thumb drive works fine on my system.
> Older kernels work fine with the Samsung also. In terms of which
> version of the kernel this stopped working, this I don't know.

Are you certain this is related to the kernel version and isn't just a 
bad USB connection or something of that sort?  Have you tried plugging 
the Samsung drive into a different computer running a recent kernel?

> My kmsg output when plugging in the drive is as follows:
> 
> 
>     <6>[  244.624034] usb 1-10: new high speed USB device using ehci_hcd
> and address 3
>     <3>[  244.780033] usb 1-10: device descriptor read/64, error -32
>     <3>[  245.036030] usb 1-10: device descriptor read/64, error -32
>     <6>[  245.252038] usb 1-10: new high speed USB device using ehci_hcd
> and address 4
>     <3>[  245.862496] usb 1-10: unable to read config index 0
> descriptor/start: -71
>     <3>[  245.862615] usb 1-10: chopping to 0 config(s)
>     <3>[  245.979496] usb 1-10: string descriptor 0 read error: -71
>     <4>[  245.980413] usb 1-10: no configuration chosen from 0 choices

These -71 errors are what you typically get when a device stops 
responding or the USB signals aren't transmitted properly.

> I will be unsubscribing from these lists after sending this bug
> report, so please contact me directly if you need more info at
> paulsheer at gmail

You know, it's not necessary to subscribe to the mailing lists before 
posting messages on them.

Alan Stern

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