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Date: Mon, 09 Jun 2014 22:37:26 +0200
From: Hans Petter Selasky <hps@selasky.org>
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To: Steve Kargl <sgk@troutmask.apl.washington.edu>, 
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Subject: Re: ohci bricks a amd64 system
References: <20140609203354.GA987@troutmask.apl.washington.edu>
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On 06/09/14 22:34, Steve Kargl wrote:
> I updated my FreeBSD-current system from an
> April 9th kernel/world (r264280M, which was
> running fine) to today sources (r267284), and
> have successfully turned the system into a brick
> if I include the USB ohci device in my kernel.
> During the verbose boot process, the brick stops
> with the message
>
> ohci early: SMM active, request owner change
>
> At this point, one must hit the reset button
> as there is no keyboard, yet.  If I remove the
> ohci device from the kernel config file, the
> resulting kernel boots but the usb mouse is
> no longer available.
>
> Any pointers on how to debug/fix the ohci device
> is appreciated.
>

Check USB BIOS settings.

Thank you!

--HPS