From owner-freebsd-hackers  Tue Jun 20 11:47:11 2000
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To: "Daniel C. Sobral" <dcs@newsguy.com>
Subject: Re: ACPI project progress report 
Cc: Mitsuru IWASAKI <iwasaki@jp.FreeBSD.org>,
	freebsd-current@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG,
	acpi-jp@jp.FreeBSD.org
In-reply-to: Your message of "Sat, 17 Jun 2000 07:46:56 +0900."
		<394AAE60.B6F0EE2A@newsguy.com> 
References: <394AAE60.B6F0EE2A@newsguy.com>  <20000617002156A.iwasaki@jp.FreeBSD.org> 
Date: Tue, 20 Jun 2000 12:45:24 -0600
From: Warner Losh <imp@village.org>
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In message <394AAE60.B6F0EE2A@newsguy.com> "Daniel C. Sobral" writes:
: Mitsuru IWASAKI wrote:
: > 
: >  - support S2, S3, S4 (hibernation) sleeping transition.  S4 sleep
: >    require some hack in boot loader.... needs help.
: 
: I thought hibernation was entirely controlled by kernel? What do you
: need?

You have to use the BIOS to put the machine into the state, but when
the machine comes out of that state, it goes through the reset vector, 
at least for S4 (I think S2 and S3 as well, I don't have my copy of
the standard handy).

Warner


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