From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S271399AbTG2LHJ (ORCPT ); Tue, 29 Jul 2003 07:07:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S271400AbTG2LHJ (ORCPT ); Tue, 29 Jul 2003 07:07:09 -0400 Received: from meryl.it.uu.se ([130.238.12.42]:43967 "EHLO meryl.it.uu.se") by vger.kernel.org with ESMTP id S271399AbTG2LHF (ORCPT ); Tue, 29 Jul 2003 07:07:05 -0400 Date: Tue, 29 Jul 2003 13:07:02 +0200 (MEST) Message-Id: <200307291107.h6TB72iP027715@harpo.it.uu.se> From: Mikael Pettersson To: linux-kernel@vger.kernel.org, wturkal@cbu.edu Subject: RE: PROBLEM: ACPI hangs when invoked from keyboard Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 29 Jul 2003 01:06:08 -0500, Warren Turkal wrote: >Grover, Andrew wrote: >> This isn't ACPI, it's because 2.5.74+ force the APIC enabled. > >You are correct, and here is my addition to this bug report. ... >At this point, I relized that I had been compiling these >kerenels without SMP, which is not what I did when I >noticed the bug. Therefor, it is an SMP-kernel-only bug. >I have a 1.9GHz Pentium 4M. My understanding is that it ... >Therefore, the breaking patch is the changeset from svn >revion 11314 to 11315, which is reproduced below, >including the patch comment. > >patch comment: >wt@braindead:/usr/src/linux-trunk$ svn log -r 11315 >------------------------------------------------------------------------ >rev 11315: mikpe | 2003-06-24 14:50:23 -0500 (Tue, 24 Jun 2003) | 17 lines > >[PATCH] enable local APIC on P4 ... >Either there is a bug with supporting my type of APIC or my APIC >must have a bug and is disabled by the BIOS for a reason. Either >my hardware should be blacklisted or the old behavior should be >restored. > >AFAIK, I have an Intel 845 chipset. I don't know what other info >is needed for blacklisting. The bug is not in the hardware but in the BIOS code. I'm planning a patch to revert P4s to a safe default, it'll be posted on LKML shortly. Out of curiosity, what make & model is your laptop? /Mikael