From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263098AbVD3AzW (ORCPT ); Fri, 29 Apr 2005 20:55:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263104AbVD3AzV (ORCPT ); Fri, 29 Apr 2005 20:55:21 -0400 Received: from scrye.com ([216.17.180.1]:18919 "EHLO mail.scrye.com") by vger.kernel.org with ESMTP id S263098AbVD3Ayn (ORCPT ); Fri, 29 Apr 2005 20:54:43 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Date: Fri, 29 Apr 2005 18:54:38 -0600 From: Kevin Fenzi To: linux-kernel@vger.kernel.org X-Mailer: VM 7.17 under 21.4 (patch 17) "Jumbo Shrimp" XEmacs Lucid Subject: Re: Problems with Centrino frequency modulation X-Draft-From: ("scrye.linux.kernel" 4880) References: Message-Id: <20050430005439.4F644454359@ningauble.scrye.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Joshua" == Joshua Kwan writes: Joshua> Hello! I'm running 2.6.11.7 on an IBM Thinkpad T42. APM is Joshua> working out very nicely in everything except clock modulation, Joshua> which seems to require ACPI before speedstep-centrino will see Joshua> it. p4-clockmod is able to wrangle the CPU, but it warns that Joshua> I should really be using speedstep-centrino as p4-clockmod Joshua> can't change the CPU voltage. Joshua> My CPU is family 6 / model 13 / stepping 6 (CPU_DOTHAN_B0 in Joshua> speedstep-centrino.c.) Is there a way to get Joshua> speedstep-centrino working without having to use the wretched Joshua> ACPI (which, among other things, prevents -- or at least makes Joshua> it a large magnitude harder to -- sleep. If I do echo 3 > Joshua> /proc/acpi/sleep or echo mem > /sys/power/state, it sleeps Joshua> correctly, but will wake up with a blank screen or a Joshua> completely white one. [Observant readers will notice this is Joshua> exactly what I reported with my last laptop and I'm Joshua> disappointed to notice that the problem is not restricted to Joshua> that POS.]) Therefore, I really, really don't want to use Joshua> ACPI. Not that you want to hear it, but I have a T42p (that I just got a few weeks ago) and it can do S3 suspend/resume just fine. There are 3 things you need to do: boot with: "acpi_sleep=s3_bios" rmmod all the usb modules before suspending. do not use the binary only ati drivers. I use the hibernate script from the suspend2 project: http://suspend2.net/ set to do S3 instead of suspend2, which also unloads blacklisted modules (Including the usb ones) and re-loads them on resume. You might try that if you get a chance. ACPI has come a long way... Joshua> Thanks. Joshua> -- Joshua Kwan kevin