Bug 10655

Summary:	Plugging in USB scanner sometimes resets USB HDD
Product:	Drivers	Reporter:	Peter Klotz (peter.klotz99)
Component:	USB	Assignee:	Greg Kroah-Hartman (greg)
Status:	RESOLVED CODE_FIX
Severity:	normal
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.25.1	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	/var/log/messages output of a typical case

Description Peter Klotz 2008-05-08 22:18:57 UTC

Latest working kernel version: ?
Earliest failing kernel version: ?
Distribution: Ubuntu 8.04
Hardware Environment: Acer TravelMate 662
Software Environment: Gnome
Problem Description: Sometimes when I plug a USB scanner into my laptop it resets an already attached (and used) USB harddisk.

Steps to reproduce:
* Start USB HDD (self powered)
* Start a "badblocks -v <DEVICE>" on this harddisk
* Plug in and out USB scanner (host powered) several times
* Occasionally a USB reset occurs on the HDD. The HDD changes its device and badblocks returns errors from this point on.

Comment 1 Peter Klotz 2008-05-08 22:19:40 UTC

Created attachment 16077 [details]
/var/log/messages output of a typical case

Comment 2 Greg Kroah-Hartman 2009-07-28 16:49:50 UTC

Should be fixed in 2.6.30.  If not, please let the developers at linux-usb@vger.kernel.org know about it.