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Date:      Mon, 22 Jul 2013 14:32:06 -0700
From:      Neel Natu <neelnatu@gmail.com>
To:        Konstantin Belousov <kostikbel@gmail.com>
Cc:        Adrian Chadd <adrian@freebsd.org>, neel@freebsd.org, current@freebsd.org, Joel Dahl <joel@freebsd.org>
Subject:   Re: Lenovo x220 - hangs on shutdown
Message-ID:  <CAFgRE9FoZZkmLRQdU3FK7PZXaNN3%2B1EwEcJC8zxKup-%2B7KGF9g@mail.gmail.com>
In-Reply-To: <20130722203603.GO5991@kib.kiev.ua>
References:  <E6983629-AD08-42F4-91B3-D07FA1999B21@vnode.se> <20130721072045.GB56585@devbox.vnode.local> <20130721161233.GB5991@kib.kiev.ua> <20130721205218.GC56585@devbox.vnode.local> <20130722095124.GH5991@kib.kiev.ua> <CAJ-Vmo=u4tN4Mq5EAnfLeUoKMoY9rWtzHrh1k%2BWg%2BWEu25Z2MA@mail.gmail.com> <20130722203603.GO5991@kib.kiev.ua>

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Hi Joel,

On Mon, Jul 22, 2013 at 1:36 PM, Konstantin Belousov
<kostikbel@gmail.com> wrote:
> On Mon, Jul 22, 2013 at 10:52:55AM -0700, Adrian Chadd wrote:
>> Hi kib,
>>
>> Is there a wiki page or some other kind of documentation descibing how
>> AMT works?
> It is Intel documentation for vPro. Setting up AMT on the motherboard
> is specific to the motherboard BIOS, you should look at the hardware
> vendor documentation.
>
> Random googling for you revealed e.g. http://wiki.debian.org/AMT
> which is actually good introduction (i.e. there is not much to say
> about AMT usage in fact).
>
>>
>> I'd like to set this up at home on some newer machines (read: buy
>> machines that have this) but I don't know what/where to start.
> For the controlling side of things, I use amttools, available in
> ports collection as comms/amtterm.  The manual pages are brief
> but useful.
>
> Amttools provide amttool(1) for power control, and amtterm/gamt for console.

Could you apply the following patch to amd64/amd64/pmap.c and see if it helps?
http://people.freebsd.org/~neel/patches/pmap_remove_pages.patch

best
Neel



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