From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757100AbYDDMLS (ORCPT ); Fri, 4 Apr 2008 08:11:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752106AbYDDMLI (ORCPT ); Fri, 4 Apr 2008 08:11:08 -0400 Received: from nn7.de ([85.214.94.156]:59482 "EHLO nn7.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751637AbYDDMLH (ORCPT ); Fri, 4 Apr 2008 08:11:07 -0400 Subject: Re: 2.6.25-current-git hangs on boot unless CONFIG_CPU_IDLE=n - Apple From: Soeren Sonnenburg To: "Carlos R\. Mafra" Cc: Ray Lee , "Pallipadi\, Venkatesh" , "Rafael J\. Wysocki" , Linux Kernel Mailing List , Pallipadi@ogre.sisk.pl In-Reply-To: <20080404114756.GA3890@localhost.ift.unesp.br> References: <924EFEDD5F540B4284297C4DC59F3DEED0EA1E@orsmsx423.amr.corp.intel.com> <20080404011053.GA21254@localhost.ift.unesp.br> <2c0942db0804032015y57e91811r37b729cd836cef6d@mail.gmail.com> <20080404114756.GA3890@localhost.ift.unesp.br> Content-Type: text/plain Content-Transfer-Encoding: 7bit Date: Fri, 04 Apr 2008 14:10:56 +0200 Message-Id: <1207311056.4547.4.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.22.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2008-04-04 at 08:47 -0300, Carlos R. Mafra wrote: > On Thu 3.Apr'08 at 20:15:02 -0700, Ray Lee wrote: > > On Thu, Apr 3, 2008 at 6:10 PM, Carlos R. Mafra wrote: > > > On Thu 3.Apr'08 at 17:14:22 -0700, Pallipadi, Venkatesh wrote: > > > > >The following report is on the current list of known regressions > > > > >from 2.6.24. Please verify if the issue is still present in the > > > > >mainline. > > > > > > > > > > > > > > >Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10093 > > > > >Subject : 2.6.25-current-git hangs on boot > > > > >unless CONFIG_CPU_IDLE=n - Apple > > > > >Submitter : Soeren Sonnenburg > > > > >Date : 2008-02-23 18:55 (41 days old) > > > > >References : http://lkml.org/lkml/2008/2/23/263 > > > > > > > > > >http://marc.info/?l=linux-acpi&m=120387537018467&w=4 > > > > >Handled-By : Pallipadi, Venkatesh > > > > > > > > > > > > > Last comment I saw from Soeren says it does not really hang. It waits > > > > for 5-10 seconds sometimes before continuing. We are still trying to > > > > narrow this down with max_cstate etc.. > > > > > > I should say that my laptop (Vaio) _hangs_ at boot (less than 10% of boots) > > > and this is the last message I see: > > > > > > "ACPI: Processor [CPU1] (supports 8 throttling states)" > > > > > > and it stays there "forever" (more than 1 or 2 minutes at least). > > > > > > I am not using my laptop too much these days, and I thought this > > > bug had been solved because it didn't hang for the last week (but > > > I boot it once per day), however it hang last night (using some > > > post 2.6.25-rc7 kernel) > > > > > > I have pictures of the screen while showing this last message at boot, > > > should I post it somewhere or that is not necessary?. > > > > If the sysrq key still works when that happens, try to do a sysrq-t, > > s, b to generate a trace, sync the filesystem, and reboot. If anything > > made it to the logs, please post it. > > Sysrq keys don't work when it hangs, I have to push the power button. > > Another thing to notice is that when it happens, it usually happens > more times in a row (like 3 times). And then it can take many boots to > happen again. > > I've uploaded the picture where it hangs, it is in the very beginning > of the boot process: > > http://www.ift.unesp.br/users/crmafra/dsc04673.jpg Actually this is http://bugzilla.kernel.org/show_bug.cgi?id=10117 ... and what you describe is exactly what I was seeing. However I thought that we are talking about the hang with ladder governor as the last message on the screen. Anyway I am not sure if both bugs are related or not but I couldn't reproduce the throttling states bug with current mainstream... Soeren