From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754828AbYI3T4H (ORCPT ); Tue, 30 Sep 2008 15:56:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753457AbYI3Tzy (ORCPT ); Tue, 30 Sep 2008 15:55:54 -0400 Received: from lirone.symas.net ([64.71.152.235]:45462 "EHLO lirone.symas.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753318AbYI3Tzx (ORCPT ); Tue, 30 Sep 2008 15:55:53 -0400 Message-ID: <48E28443.7060708@symas.com> Date: Tue, 30 Sep 2008 12:55:47 -0700 From: Howard Chu User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; rv:1.9.1b1pre) Gecko/20080917130338 SeaMonkey/2.0a1pre MIME-Version: 1.0 To: linux-kernel Subject: APIC frequency too slow on HP dv5z Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org More often than not, on a warm boot I see something like this msg.new:[ 1.940031] Using local APIC timer interrupts. msg.new:[ 1.944031] APIC timer calibration result 466046 msg.new:[ 1.944031] Detected 0.466 MHz APIC timer. msg.new:[ 1.944031] APIC frequency too slow, disabling apic timer On cold boots it may see 12.5MHz, or may not... [ 2.000584] Using local APIC timer interrupts. [ 2.004067] APIC timer calibration result 12500236 [ 2.004080] Detected 12.500 MHz APIC timer. I haven't figured out yet what the pattern is behind the behavior. Has anyone else seen this kind of problem before? -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/