From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755900AbXKBNy6 (ORCPT ); Fri, 2 Nov 2007 09:54:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753762AbXKBNyv (ORCPT ); Fri, 2 Nov 2007 09:54:51 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:53247 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753322AbXKBNyu (ORCPT ); Fri, 2 Nov 2007 09:54:50 -0400 From: "Rafael J. Wysocki" To: Philipp Matthias Hahn Subject: Re: [2.6.23] IBM X41 looses time after Suspend2Disk Date: Fri, 2 Nov 2007 15:11:32 +0100 User-Agent: KMail/1.9.5 Cc: Pavel Machek , Kernel Mailing List , linux-pm@lists.linux-foundation.org, Thomas Gleixner References: <20071029201955.GA1955@titan.lahn.de> <20071030210801.GA1767@elf.ucw.cz> <20071102133323.GC2780@titan.lahn.de> In-Reply-To: <20071102133323.GC2780@titan.lahn.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200711021511.32834.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Friday, 2 November 2007 14:33, Philipp Matthias Hahn wrote: > Hello! > > On Tue, Oct 30, 2007 at 10:08:01PM +0100, Pavel Machek wrote: > > > > On Monday, 29 October 2007 21:19, Philipp Matthias Hahn wrote: > > > > > I have an IBM X41 tablet pc running 2.6.23 with the following problem: > > > > > Suspend2Ram work fine, but when I do a Suspend2Disk (echo disk > > > > > > /sys/power/state), the notebook hangs showing the following lines: > > > ... > > > > > Suspending console(s) > > > > > > > > > > When I repeatedly press some keys or move the TrackPoint, the SwSusp > > > > > continues and the notebook powers off. > > > > > On reboot, the notebook resumes but hangs showing the following screen: > > > ... > > > > > Suspending console(s) > > > > > > > > > > Generating interrupts by pressing keys or moving the TrackPoints makes > > > > > the resume continue. But after that, the notebook looses time, xterms > > > > > don't get updated until I press a key, the beeper beeps until I press a > > > > > key, etc. > ... > > > On Mon, Oct 29, 2007 at 10:24:14PM +0100, Pavel Machek wrote: > > > > Yep, I seen that before. Try "nohz=off". > > > > > > Okay, that seems to solve the "timer loosing time after resume" problem. > > > > > > > > > But I still need to press some keys on suspend (7-12 key presses and > > > releases) to unhang it. On resume not key presses are needed any > > > more. > > > > So it fixed resume but not suspend? strange. Try highres=off, too. And > > maybe irqpoll? > > highres=off did the trick. Thank you. > > Does somebody want more data to debug this further? Please create a bugzilla entry at http://bugzilla.kernel.org for this bug (against "Power Management"->"Hibernation/Suspend") and put a summary of your findings in there. Also, please add my address to the bug's CC list. Thanks, Rafael