From owner-svn-src-all@FreeBSD.ORG  Wed Mar 21 18:52:07 2012
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from [127.0.0.1] (freefall.freebsd.org [IPv6:2001:4f8:fff6::28])
	by hub.freebsd.org (Postfix) with ESMTP id 874CF106566B;
	Wed, 21 Mar 2012 18:52:06 +0000 (UTC)
	(envelope-from jkim@FreeBSD.org)
From: Jung-uk Kim <jkim@FreeBSD.org>
To: Nathan Whitehorn <nwhitehorn@freebsd.org>
Date: Wed, 21 Mar 2012 14:51:56 -0400
User-Agent: KMail/1.6.2
References: <201203202137.q2KLbrFu039018@svn.freebsd.org>
	<4F69E625.9040708@freebsd.org>
In-Reply-To: <4F69E625.9040708@freebsd.org>
MIME-Version: 1.0
Content-Disposition: inline
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Message-Id: <201203211451.59161.jkim@FreeBSD.org>
Cc: "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>,
	"svn-src-all@freebsd.org" <svn-src-all@freebsd.org>,
	"src-committers@freebsd.org" <src-committers@freebsd.org>
Subject: Re: svn commit: r233250 - in head: share/man/man4 sys/amd64/acpica
	sys/contrib/dev/acpica sys/contrib/dev/acpica/common
	sys/contrib/dev/acpica/compiler
	sys/contrib/dev/acpica/components/debugger sys/co...
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
	user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
	<mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
	<mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 21 Mar 2012 18:52:07 -0000

On Wednesday 21 March 2012 10:31 am, Nathan Whitehorn wrote:
> On 03/20/12 14:37, Jung-uk Kim wrote:
> > Author: jkim
> > Date: Tue Mar 20 21:37:52 2012
> > New Revision: 233250
> > URL: http://svn.freebsd.org/changeset/base/233250
> >
> > Log:
> >    Merge ACPICA 20120320.
>
> After this, I get an endless series of "Large reference count -
> (increasingly large hex number) - utdelete-491" on the console when
> trying to boot my laptop. How should I go about trying to debug
> this?

You need to rebuild the kernel.  Add the following line to kernel 
configuration:

	options	ACPI_DEBUG

Then, type this from loader prompt:

	set debug.acpi.layer=ACPI_ALL_COMPONENTS
	set debug.acpi.level=ACPI_LV_ALLOCATIONS
	boot

You will be able to trace all refcount changes.  Once it boots, login 
and do this to turn it off:

	sysctl debug.acpi.layer=NONE

However, I am afraid it will spit out too much information for you to 
interpret the data. :-(

Jung-uk Kim