usb/142989: canon eos 50D attaches but detaches after few seconds (1 - 4)

[robert]

>Number:         142989
>Category:       usb
>Synopsis:       canon eos 50D attaches but detaches after few seconds (1 - 4)
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-usb
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jan 19 21:00:20 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     robert
>Release:        FreeBSD 8.0
>Organization:
>Environment:
FreeBSD x300.blacquiere.local 8.0-RELEASE-p2 FreeBSD 8.0-RELEASE-p2 #0: Tue Jan  5 21:11:58 UTC 2010     root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64
>Description:
Canon EOS 50D dslr connected to usb ports attaches but detaches after few seconds, between 1 and 4 seconds. 

ugen6.2: <Canon Inc.> at usbus6
ugen6.2: <Canon Inc.> at usbus6 (disconnected)

usbconfig list does not show any Canon device any more. 


>How-To-Repeat:
attach canon eos 50D firmware version 1.07 with usb on freebsd 8.0 laptop.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: