[Bug 264789] Re: USB Hard Drive Not Accessible

[Robert Fekete]

Hi, my original bugreport (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/291021) was duped to this bug, 
although I am not entirely sure it is the same problem.

A quick summary of the problem:

I have an external hard drive (Toshiba PX1220E-1G25, 250 GB, 3,5'') that is not recognized under linux (
tested on Ubuntu 8.04 and Debian Lenny). It works fine under Windows XP. The device
is actually a Dura Micro Model 501-B101 (or maybe B112) HDD enclosure.

Symptoms:

* The following message is visible in dmesg: usb 5-8: new high speed USB device using ehci_hcd and address 4
This message is repeated from time to time using different address number.
* The disk does not show up under the lsusb and fdisk -l commands.

If I remove the ehci_hcd module, then the device starts to work.
The 'trick' mentioned in this bug (modifying the 60-persistent-storage.rules file, the 40-permissions.rules file, and restarting udev) does not solve the problem, at least not on hardy. Please let me know if I can provide further information.

With ehci_hcd enabled:

Output of dmesg:
[ 7359.852048] usb 5-7: new high speed USB device using ehci_hcd and address 4

Output of uname -a:
Linux 2.6.24-21-generic #1 SMP Tue Oct 21 23:43:45 UTC 2008 i686 GNU/Linux

Output of lsb_release -a:
Distributor ID: Ubuntu
Description: Ubuntu 8.04.1
Release: 8.04
Codename: hardy

Output of lsusb -v:
See the attachment of the original bug,

-- 
USB Hard Drive Not Accessible
https://bugs.launchpad.net/bugs/264789
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