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From: Randy Bush <randy@psg.com>
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Date: Fri, 31 Dec 2004 05:05:32 -1000
To: "M. Warner Losh" <imp@bsdimp.com>
References: <20041228010938.GA39686@freebsd3.cimlogic.com.au>
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cc: FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: USB problems
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possibly related?

just so you know, on a thinkpad t41 with any current in the last
few weeks, i kernel panic on boot if a usb device is not plugged
in.  turning off acpi also allows boot.  see

   <http://rip.psg.com/~randy/041215.crash>

i can help debug if anyone is on the trail

randy