Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265878AbUA1Wil (ORCPT ); Wed, 28 Jan 2004 17:38:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266176AbUA1Wil (ORCPT ); Wed, 28 Jan 2004 17:38:41 -0500 Received: from agminet01.oracle.com ([141.146.126.228]:48351 "EHLO agminet01.oracle.com") by vger.kernel.org with ESMTP id S265878AbUA1Wif (ORCPT ); Wed, 28 Jan 2004 17:38:35 -0500 Message-ID: <40183860.7040503@oracle.com> Date: Wed, 28 Jan 2004 23:32:00 +0100 From: Alessandro Suardi User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20040107 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Matt Domsch CC: Dmitry Torokhov , Andrew Morton , linux-kernel@vger.kernel.org, linux-acpi@intel.com Subject: Re: 2.6.2-rc2-bk1 oopses on boot (ACPI patch) References: <40171B5B.4020601@oracle.com> <20040127184228.3a0b8a86.akpm@osdl.org> <200401272337.55676.dtor_core@ameritech.net> <20040128073737.A29748@lists.us.dell.com> In-Reply-To: <20040128073737.A29748@lists.us.dell.com> Content-Type: multipart/mixed; boundary="------------050406040909040709070806" X-Brightmail-Tracker: AAAAAQAAAAI= X-White-List-Member: TRUE Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8240 Lines: 146 This is a multi-part message in MIME format. --------------050406040909040709070806 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Matt Domsch wrote: > On Tue, Jan 27, 2004 at 11:37:55PM -0500, Dmitry Torokhov wrote: > >>>Divide by zero. Looks like ACPI is now passing bad values into the >>>frequency change notifier. >> >>It is a common problem with Dell's DSDT implementation which does not >>follow ACPI spec and it's been going on for ages. From the original >>report: >> >>cpufreq: CPU0 - ACPI performance management activated >> cpufreq: *P0: 1Mhz, 0 mW, 0 uS >> cpufreq: P1: 0Mhz, 0 mW, 0 uS >> divide error: 0000 [#1] >> >>As you can see all data is bogus... Patching DSDT cures it for sure, >>sometimes CONFIG_ACPI_RELAXED_AML helps as well. > > > Please send me your DSDT and output of dmidecode, and ideally what a > proper DSDT should show in this case (I'm not familiar enough with > what all the various ACPI tables should contain), and I'll take it up > with the BIOS programmers for that platform. While appreciating your offer, I'd like to remind that this works perfectly prior to the 20031203 ACPI patch. Indeed, this is what 2.6.1 vanilla says in that area: cpufreq: CPU0 - ACPI performance management activated. cpufreq: *P0: 1800 MHz, 0 mW, 250 uS cpufreq: P1: 1200 MHz, 0 mW, 250 uS Attaching the gzipped dmesg for my 2.6.1 boot - let me know if you want anyway dmidecode output and DSDT; for this latter I'll have to ask for instructions (or is the output of a simple 'cat /proc/acpi/dsdt' enough ?). --alessandro "Two rivers run too deep The seasons change and so do I" (U2, "Indian Summer Sky") --------------050406040909040709070806 Content-Type: application/x-gzip; name="dmesg.out.gz" Content-Transfer-Encoding: base64 Content-Disposition: inline; filename="dmesg.out.gz" H4sICEk2GEACA2RtZXNnLm91dADVWm1z4kiS/nz6FRmxcdFmD4TeeN3rjcFgt1kbN2fontnz dRBCKoEWvbUkMJ5ff0+WJMBud3s8Ox92HR00UmVmVWXly5NZ3PjRdk87kWZ+HJGhtlWdzuxs a6eu/5MfOb4rorxGZyvHOVCZqqEaZGiaqRmGQWd3wqUrO6cbKUuONlq1Gv1Jp8vUp7/ZEfVI 1/uW2bcMGl7MmddSzscfZ40kjXeYw6Vk/Zj5jh3Q3WBCoZ30FZIEomtofdKe/VHj9FXPc/Dq 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