From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265970AbUHTJnU (ORCPT ); Fri, 20 Aug 2004 05:43:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265928AbUHTJnT (ORCPT ); Fri, 20 Aug 2004 05:43:19 -0400 Received: from mustang.oldcity.dca.net ([216.158.38.3]:60816 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S261724AbUHTJnA (ORCPT ); Fri, 20 Aug 2004 05:43:00 -0400 Subject: Re: [Jackit-devel] Re: little NPTL SCHED_FIFO test program From: Lee Revell To: martin rumori Cc: jackit-devel , Ingo Molnar , linux-kernel In-Reply-To: <20040820092042.GA2496@amadora.tejo> References: <20040817121358.5adffd22@mango.fruits.de> <200408172102.00964.pnambic@unu.nu> <20040818004633.35eb6501@mango.fruits.de> <200408180100.04955.pnambic@unu.nu> <20040818023546.03e79fc4@mango.fruits.de> <1092794828.813.49.camel@krustophenia.net> <20040818050708.54a27a7e@mango.fruits.de> <1092987523.10063.62.camel@krustophenia.net> <20040820092042.GA2496@amadora.tejo> Content-Type: text/plain Message-Id: <1092994979.10063.80.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Fri, 20 Aug 2004 05:42:59 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2004-08-20 at 05:20, martin rumori wrote: > On Fri, Aug 20, 2004 at 03:38:44AM -0400, Lee Revell wrote: > > > I have built a glibc with the patch you (Lee) sent to the bug-report. > > > > This fixes the problem, jackd now works correctly. I cannot take credit > > for finding the problem though, Florian did most of the work in tracking > > this down. > > same here, really great (debian unstable). > > wanted to try the volunteer preempt patch for the first time, (until > now running 2.6.7-cko5 atm). > > tried to compile 2.6.8.1 with volunteer-preempt-P5 (latest), but > wasn't able to boot into the new kernel. shows some lines of ACPI.... > directly after unpacking, then stops for about 1 second (without an > error message, last line is something with a specific processor flag), > then reboots. not long enough to see something meaningful... > I think you have an off-by-one error. The latest version is -P4. Try the 'noacpi' boot option. Also, try disabling all power management. I know this is not realistic for a laptop, it's just for debugging purposes. > ACPI is disabled in favor of APM, changed that, same behavior: there > is some lines starting with ACPI on the screen, either way. applied > latest acpi.sf.net patch, same thing. would like to keep APM since > ACPI doesn't work that well with my machine. stock 2.6.8.1-acpi boots > fine (with the usual acpi oddities, with or without acpi patch), apm > with 2.6.8 not yet tried (don't expect problems). > > thinkpad t40p, PM-1600, 512 MB, latest bios/embeddecontroller. > > is there something like that known with volunteer-preempt? should i > try an older version (== P4) first? are there some config options > which are especially meaningful? > I am adding LKML and Ingo to the cc: list as he has requested any reports of ACPI problems with the VP patches. Lee