From owner-freebsd-current@FreeBSD.ORG  Tue Jan 16 20:52:05 2007
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: freebsd-current@freebsd.org
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id 8B36D16A412
	for <freebsd-current@freebsd.org>; Tue, 16 Jan 2007 20:52:05 +0000 (UTC)
	(envelope-from sepotvin@videotron.ca)
Received: from relais.videotron.ca (relais.videotron.ca [24.201.245.36])
	by mx1.freebsd.org (Postfix) with ESMTP id 654EB13C448
	for <freebsd-current@freebsd.org>; Tue, 16 Jan 2007 20:52:05 +0000 (UTC)
	(envelope-from sepotvin@videotron.ca)
Received: from [10.0.0.136] ([67.70.237.74]) by VL-MO-MR003.ip.videotron.ca
	(Sun Java System Messaging Server 6.2-2.05 (built Apr 28 2005))
	with ESMTPA id <0JBZ005VD8IRH990@VL-MO-MR003.ip.videotron.ca> for
	freebsd-current@freebsd.org; Tue, 16 Jan 2007 14:52:04 -0500 (EST)
Date: Wed, 17 Jan 2007 03:52:03 +0800
From: "Stephane E. Potvin" <sepotvin@videotron.ca>
In-reply-to: <499c70c0701080850q72eac288h50b8265fe4e62a53@mail.gmail.com>
To: Abdullah Al-Marrie <almarrie@gmail.com>
Message-id: <45AD2CE3.7040304@videotron.ca>
Organization: TelcoBridges Inc.
MIME-version: 1.0
Content-type: text/plain; charset=UTF-8; format=flowed
Content-transfer-encoding: 7BIT
References: <499c70c0701080850q72eac288h50b8265fe4e62a53@mail.gmail.com>
User-Agent: Thunderbird 1.5.0.9 (Windows/20061207)
Cc: freebsd-current@freebsd.org
Subject: Re: cpu0: Unable to find _CST method
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 16 Jan 2007 20:52:05 -0000

Abdullah Al-Marrie wrote:
> Hello,
> 
> I have strange msg in the dmesg
> 
> cpu0: Unable to find _CST method
> 

[dmesg removed]

Hi Abdullah,

The warning you are seeing (along with the following line: cpu0: 
Switching to generic Cx mode) is part of the recent upgrade to the acpi 
cpu driver to enable higher Cx modes for SMP systems. The warning just 
indicates that you have a multi-cpu system but that your ACPI AML didn't 
provide a _CST method. This is a harmless warning and the cpu driver 
will revert to using the previous method to change the Cx states). This 
will probably limit you to the C1 state, ymmv. You might want to try to 
update to a newer BIOS version, which might include the _CST method.

Regards,

Steph