From owner-freebsd-hardware@FreeBSD.ORG  Wed Jul 16 08:08:52 2008
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From: Hans Petter Selasky <hselasky@c2i.net>
To: freebsd-hardware@freebsd.org
Date: Wed, 16 Jul 2008 10:10:26 +0200
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Cc: Justin Hall <justin.walker.hall@gmail.com>
Subject: Re: IP35-E USB problems
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On Wednesday 16 July 2008, Justin Hall wrote:
> Hello All,
>
> I am having troubles with getting a machine with an ABIT IP35-E (ICH9
> chipset) board to boot fully. It hangs after probing uhub1. I have updated
> the BIOS and rebuilt from the latest STABLE sources in the CVS repository
> to no avail. The only way I can get it to boot is by disabling my onboard
> USB controller, which is obviously not a good solution.
>
> Any help is appreciated,
>
> Justin Hall
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Can you enter into the debugger (CTRL+ALT+ESC) and dump the interrupt stats. 
Maybe the interrupt handler is looping.

--HPS