From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S272130AbTHDTUE (ORCPT ); Mon, 4 Aug 2003 15:20:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S272135AbTHDTUE (ORCPT ); Mon, 4 Aug 2003 15:20:04 -0400 Received: from meryl.it.uu.se ([130.238.12.42]:32910 "EHLO meryl.it.uu.se") by vger.kernel.org with ESMTP id S272130AbTHDTUA (ORCPT ); Mon, 4 Aug 2003 15:20:00 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16174.45532.487890.571664@gargle.gargle.HOWL> Date: Mon, 4 Aug 2003 21:19:56 +0200 From: Mikael Pettersson To: Ruben Puettmann Cc: linux-kernel@vger.kernel.org Subject: Re: [APM ERROR-REPORT] APM_DISPLAY_BLANK freezes Thinkpad R40 and Sony Z1 on suspend In-Reply-To: <20030804180559.GA31178@puettmann.net> References: <20030804180559.GA31178@puettmann.net> X-Mailer: VM 6.90 under Emacs 20.7.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Ruben Puettmann writes: > enable CONFIG_APM_DISPLAY_BLANK on linux 2.4.22-pre10 and > 2.4.22-pre10-ac1 freeze my Thinkpad R40 with Ati Mobile 7500 and Sony Z1 > on apm -s. If you have UP_APIC or SMP enabled, then this is a known user-bug. CONFIG_APM_DISPLAY_BLANK, CONFIG_APM_CPU_IDLE, and configuring APM as a module instead of built-in, are known to do really bad things with regard to BIOSen and the local APIC. The fix, if you have APIC or SMP support, is to NOT misconfigure APM. /Mikael