From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761371AbXH3Uwx (ORCPT ); Thu, 30 Aug 2007 16:52:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757033AbXH3Uwn (ORCPT ); Thu, 30 Aug 2007 16:52:43 -0400 Received: from mail-out.m-online.net ([212.18.0.10]:37178 "EHLO mail-out.m-online.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752982AbXH3Uwn (ORCPT ); Thu, 30 Aug 2007 16:52:43 -0400 X-Auth-Info: hGcqQH5u8ozVszcHJQeaCUHAlAy5MxAKo3OgJrbatj0= Subject: IBM ThinkPad T23: Uhhuh. NMI received for unknown reason 30 on CPU 0. From: Stefan Foerster Reply-To: stefan.foerster@mnet-online.de To: linux-kernel@vger.kernel.org Content-Type: text/plain Organization: United Federation of Planets Date: Thu, 30 Aug 2007 22:52:40 +0200 Message-Id: <1188507160.4640.18.camel@stefan2> Mime-Version: 1.0 X-Mailer: Evolution 2.11.91 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi all, on my IBM ThinkPad T23 I often get the following messages (together with a beep from the speaker): ------------------- Message from syslogd@stefan2 at Thu Aug 30 22:02:17 2007 ... stefan2 kernel: Uhhuh. NMI received for unknown reason 30 on CPU 0. Message from syslogd@stefan2 at Thu Aug 30 22:02:17 2007 ... stefan2 kernel: Do you have a strange power saving mode enabled? Message from syslogd@stefan2 at Thu Aug 30 22:02:17 2007 ... stefan2 kernel: Dazed and confused, but trying to continue stefan@stefan2:~$ Message from syslogd@stefan2 at Thu Aug 30 22:32:08 2007 ... stefan2 kernel: Do you have a strange power saving mode enabled? Message from syslogd@stefan2 at Thu Aug 30 22:32:08 2007 ... stefan2 kernel: Dazed and confused, but trying to continue Message from syslogd@stefan2 at Thu Aug 30 22:32:08 2007 ... stefan2 kernel: Uhhuh. NMI received for unknown reason 30 on CPU 0. ------------------ There seems to be no pattern in the "interarrival times" of this signal. Sometimes I get it about every 30 minutes, sometimes only once a day. It also doesn't depend on the kernel version. I now see this behaviour on this notebook for 3 years now. My current kernel version is 2.6.23-rc3 (plain vanilla kernel), Ubuntu Gutsy Gibbon. I have googled "Uhhuh. ..." and got exactly 3 (!) entries, but no solution. But it seems that this is somehow typical for some notebooks, especially ThinkPads. Any ideas ? Stefan