From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965367AbXCBO4c (ORCPT ); Fri, 2 Mar 2007 09:56:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965366AbXCBO4c (ORCPT ); Fri, 2 Mar 2007 09:56:32 -0500 Received: from adelie.ubuntu.com ([82.211.81.139]:36354 "EHLO adelie.ubuntu.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965367AbXCBO4b (ORCPT ); Fri, 2 Mar 2007 09:56:31 -0500 Subject: Re: Resume from S2R fails after dpm_resume() From: Ben Collins To: Pavel Machek Cc: Tim Gardner , nigel@nigel.suspend2.net, linux-kernel@vger.kernel.org In-Reply-To: <20070302143934.GN2156@elf.ucw.cz> References: <45E5E799.1000502@tpi.com> <20070302141259.GJ2156@elf.ucw.cz> <45E833ED.2070402@tpi.com> <20070302143934.GN2156@elf.ucw.cz> Content-Type: text/plain Date: Fri, 02 Mar 2007 09:55:45 -0500 Message-Id: <1172847345.5821.42.camel@gullible> Mime-Version: 1.0 X-Mailer: Evolution 2.9.92 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2007-03-02 at 15:39 +0100, Pavel Machek wrote: > On Fri 2007-03-02 07:25:49, Tim Gardner wrote: > > Pavel Machek wrote: > > > Hi! > > > > > >> I instrumented 2.6.21-rc1 base/power/resume.c device_resume() with > > >> TRACE_RESUME(0) as the last statement in the function. Sure enough it > > >> was the last hash value in the RTC after a hard reboot when resume failed: > > >> > > >> [ 12.028820] hash matches drivers/base/power/resume.c:104 > > >> > > >> The machine appears to be absolutely wedged after initiating resume by > > >> pressing the power button. The disk flashes for a half second or so, > > >> then thats it. > > >> > > >> It is a Dell XPS, BIOS rev A04. I'm using 'echo 1 > /sys/power/pm_trace; > > >> echo mem > /sys/power/state' to initiate the S2R sequence. > > >> > > >> Any suggestions on where to go from here? > > > > > > Did it work ok in 2.6.20? Can you try to get video working/get serial > > > console/something? > > > Pavel > > > > Pavel, > > > > The last version that worked well was Ubuntu Edgy (2.6.17). It was > > broken by 2.6.18. I have not started the 'git bisect' process, instead > > I've been trying to figure out why it doesn't work in 2.6.21-rc2. Using > > the TRACE_RESUME macro I've drilled down to > > kernel/printk.c:__call_console_drivers. So far the last trace info that > > I have is just before the call to con->write(). I'm trying to figure out > > what driver has registered as the console (intel_agp or agpgart?). > > > > Am I banging my head on a known problem? > > 2.6.21-rc* is known broken (in more than 1 way). I'd suggest playing > with 2.6.20. It's broken for him in 2.6.20 too, which led him to test 2.6.21-rc, and some vanilla kernels back to 2.6.18. Everything past 2.6.17 is broken for him. -- Ubuntu: http://www.ubuntu.com/ Linux1394: http://www.linux1394.org/