From mboxrd@z Thu Jan 1 00:00:00 1970 From: Raphael Clifford Subject: 2.6.16-rc1 will not boot on msi rs480m2 when either acpi or apic is enabled Date: Mon, 23 Jan 2006 16:02:55 +0000 Message-ID: <43D4FE2F.5080700@clifford.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from dirg.bris.ac.uk ([137.222.10.102]:38560 "EHLO dirg.bris.ac.uk") by vger.kernel.org with ESMTP id S932276AbWAWQC7 (ORCPT ); Mon, 23 Jan 2006 11:02:59 -0500 Received: from lunaleka.cs.bris.ac.uk ([137.222.102.100]) by dirg.bris.ac.uk with esmtp (Exim 4.60) (envelope-from ) id 1F149g-0003ZW-1C for linux-acpi@vger.kernel.org; Mon, 23 Jan 2006 16:02:58 +0000 Received: from [137.222.102.36] (helo=[137.222.102.36]) by lunaleka.cs.bris.ac.uk with esmtp (Exim 4.51) id 1F149g-0005vB-Si for linux-acpi@vger.kernel.org; Mon, 23 Jan 2006 16:02:56 +0000 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org MSI rs480m2 system (AMD64 processor) will not boot when either acpi or apic are enabled in the boot arguments. This has been tested in many kernels (gentoo and vanilla) up to and including 2.6.16-rc1. 1) When booting with command line root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/sda5 udev report_lost_ticks=100 noapictimer the following is a screenshot of what happens. First it pauses at "sata_sil" and then http://img66.imageshack.us/img66/2489/screenacpismall4my.jpg 2) When booting with commmand line root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/sda5 udev report_lost_ticks=100 acpi=off the following is a screenshot of what happens. http://img204.imageshack.us/img204/9753/screenapicsmall5tx.jpg A litte more investigation shows that the system will in fact boot with Command line root=/dev/ram0 init=/linuxrc ramdisk=8192 real_root=/dev/sda5 udev report_lost_ticks=100 noapictimer acpi=noirq I reported this problem to http://bugzilla.kernel.org/show_bug.cgi?id=5933 which has full debug info. Although this problem may not seem that important, it appears to (maybe) cause a drastic problem with interrupts which manifests itself particularly if you try to write a cd for example. I am hoping that if I can boot with ACPI and APIC on then this may fix itself. Raphael P.S. Should I report the APIC part of the bug somewhere else separately?