From owner-freebsd-stable@FreeBSD.ORG Fri May 7 19:26:07 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 01B4A106566C for ; Fri, 7 May 2010 19:26:07 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from qmta12.emeryville.ca.mail.comcast.net (qmta12.emeryville.ca.mail.comcast.net [76.96.27.227]) by mx1.freebsd.org (Postfix) with ESMTP id D6D148FC08 for ; Fri, 7 May 2010 19:26:06 +0000 (UTC) Received: from omta17.emeryville.ca.mail.comcast.net ([76.96.30.73]) by qmta12.emeryville.ca.mail.comcast.net with comcast id Eddn1e0051afHeLACjS75X; Fri, 07 May 2010 19:26:07 +0000 Received: from koitsu.dyndns.org ([98.248.46.159]) by omta17.emeryville.ca.mail.comcast.net with comcast id EjS61e00C3S48mS8djS76C; Fri, 07 May 2010 19:26:07 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id AED609B425; Fri, 7 May 2010 12:26:05 -0700 (PDT) Date: Fri, 7 May 2010 12:26:05 -0700 From: Jeremy Chadwick To: Demelier David Message-ID: <20100507192605.GA62650@icarus.home.lan> References: <20100505135743.GA1613@Melon.malikania.fr> <20100507120843.GA1738@Melon.malikania.fr> <1273257226.1671.3.camel@malikania.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1273257226.1671.3.camel@malikania.fr> User-Agent: Mutt/1.5.20 (2009-06-14) Cc: Giovanni Trematerra , freebsd-stable@freebsd.org Subject: Re: Kernel panic when unpluggin AC adaptor X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 07 May 2010 19:26:07 -0000 On Fri, May 07, 2010 at 08:33:46PM +0200, Demelier David wrote: > Le Vendredi 07 mai 2010 à 18:22 +0200, Giovanni Trematerra a écrit : > > On Fri, May 7, 2010 at 2:08 PM, Demelier David wrote: > > > Hi, > > > I noticed that pluggin the AC adaptor when I boot without it does not > > > panic. It only panic when removing it. > > > > > > Maybe that could help ? > > > > > > > Good to know. The problem lies somewhere when performance state change. > > In your case it happens when you remove AC adaptor. Let's hope someone on > > acpi@ ml comes up with a good idea. > > > > Okay so for the moment no change, I'll wait for someone with an idea > that could solve my problem. For me because the panic only happens when > changing profile from ac plugged -> ac unplugged (and not the reverse) I > would think it's a cpu related acpi issue. This is one of the reasons why I asked you to provide sysctl dev.cpu output (which you did -- thanks!). There's a known situation where CPUs going into C3 (but not C1 or C2) state causes problems. In your case your CPUs only advertise up to C2, so you're unaffected by that issue. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |