From owner-freebsd-stable@FreeBSD.ORG Mon Jul 23 21:57:22 2012 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 002C8106566C for ; Mon, 23 Jul 2012 21:57:21 +0000 (UTC) (envelope-from danallen46@airwired.net) Received: from mail.utahbroadband.com (mail.utahbroadband.com [204.14.20.91]) by mx1.freebsd.org (Postfix) with ESMTP id B36148FC0A for ; Mon, 23 Jul 2012 21:57:21 +0000 (UTC) Received: (qmail 13979 invoked by uid 89); 23 Jul 2012 22:05:08 -0000 Received: from unknown (HELO ?192.168.0.18?) (danallen46@airwired.net@66.29.174.6) by mail.utahbroadband.com with ESMTPA; 23 Jul 2012 22:05:08 -0000 From: Dan Allen Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Message-Id: <0974E59F-62DA-407A-99A7-6704A70D12C6@airwired.net> Date: Mon, 23 Jul 2012 15:49:37 -0600 To: List FreeBSD-STABLE Mailing Mime-Version: 1.0 (Mac OS X Mail 6.0 \(1485\)) X-Mailer: Apple Mail (2.1485) Subject: local APIC error 0x40 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: Mon, 23 Jul 2012 21:57:22 -0000 Running FreeBSD 8.3 -- and updating sources on a daily base and building = everything -- I found a new APIC/ACPI problem introduced in the past = week. I have a Toshiba Satellite U205 with an Intel Core Duo (not a Core 2). = It used to work fine with both cores but then sometime in on the road to = BSD 8.0 the machine began hanging. So I added to /boot/loader.conf hint.apic.0.disabled=3D"1" and the machine only had one core but it went back to being reliable. The laptop sits idle a lot, so I also have in /etc/rc.conf performance_cx_lowest=3D"LOW" and the fans stay off unless I am doing a build. Everything was good. I went away on a trip last week for five days, came home, did a csup to = RELENG_8 and rebuilt the world, as usual, and now the fans are always = running full! If I comment out hint.apic.0.disabled=3D"1" from /boot/loader.conf and = reboot, the results are a mixed bag: 1) I get my 2nd core back, and it no longer hangs! Hurray. 2) The fans go back to usually being off and silent. Hurray! 3) I get zillions of error messages streaming saying: CPU0: local APIC error 0x40 CPU1: local APIC error 0x40 No good! I am sitting at a prompt, no X-Windows, no apps running (other than the = usual demons), and every few seconds I get another pair of these error = messages. 4) The error appears benign other than flooding the console. Everything = works, nothing hangs, I can build the OS and everything appears fine. So how do I get rid of these messages? What does error 0x40 mean? Thanks, Dan Allen