From owner-freebsd-questions@FreeBSD.ORG  Sat Oct  2 14:42:46 2010
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 16945106566C
	for <freebsd-questions@freebsd.org>;
	Sat,  2 Oct 2010 14:42:46 +0000 (UTC)
	(envelope-from lists@eitanadler.com)
Received: from mail-iw0-f182.google.com (mail-iw0-f182.google.com
	[209.85.214.182])
	by mx1.freebsd.org (Postfix) with ESMTP id E2D628FC08
	for <freebsd-questions@freebsd.org>;
	Sat,  2 Oct 2010 14:42:45 +0000 (UTC)
Received: by iwn10 with SMTP id 10so55541iwn.13
	for <freebsd-questions@freebsd.org>;
	Sat, 02 Oct 2010 07:42:45 -0700 (PDT)
Received: by 10.231.157.205 with SMTP id c13mr7309600ibx.71.1286030563187;
	Sat, 02 Oct 2010 07:42:43 -0700 (PDT)
MIME-Version: 1.0
Received: by 10.231.166.77 with HTTP; Sat, 2 Oct 2010 07:42:23 -0700 (PDT)
From: Eitan Adler <lists@eitanadler.com>
Date: Sat, 2 Oct 2010 10:42:23 -0400
Message-ID: <AANLkTim14Uuc-87grjOzQEfXhmb6d-dN9nRC2_pRUmHN@mail.gmail.com>
To: FreeBSD Mailing List <freebsd-questions@freebsd.org>
Content-Type: text/plain; charset=UTF-8
Subject: ACPI & battery issues
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 02 Oct 2010 14:42:46 -0000

I see
ACPI Exception: AE_NO_HARDWARE_RESPONSE, Returned by Handler for
[EmbeddedControl] (20100331/evregion-588)
ACPI Error (psparse-0633): Method parse/execution failed
[\\_SB_.PCI0.LPCB.BAT1._BST] (Node 0xc6adba60),
AE_NO_HARDWARE_RESPONSE

repeatedly in dmesg

sysctl's relating to battery information is also slow:
% time sysctl hw.acpi.battery.state
hw.acpi.battery.state: 7
sysctl hw.acpi.battery.state  0.00s user 2.18s system 72% cpu 3.006 total

% time sysctl hw.acpi.battery
hw.acpi.battery.life: -1
hw.acpi.battery.time: -1
hw.acpi.battery.state: 7
hw.acpi.battery.units: 1
hw.acpi.battery.info_expire: 5
sysctl hw.acpi.battery  0.00s user 6.58s system 67% cpu 9.779 total

also note that the life and time are both negative one.

This is on a Lenovo G530 laptop.
-- 
Eitan Adler