From owner-freebsd-current@FreeBSD.ORG  Tue Sep 20 07:43:23 2011
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From: Hans Petter Selasky <hselasky@c2i.net>
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Cc: Garrett Cooper <yanegomi@gmail.com>, Pegasus Mc Cleaft <ken@mthelicon.com>
Subject: Re: USB Keyboard doesn't work
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On Tuesday 20 September 2011 03:10:35 Daniel O'Connor wrote:
> Unfortunately I believe the USB stack is effectively frozen once the
> mountroot prompt appears hence the need for the work around.

Hi,

It is not frozen. The problem is that the thread polling for key-presses runs 
at higher priority than the USB threads. And it doesn't call pause() at any 
time.

--HPS