Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753652AbZK2A3E (ORCPT ); Sat, 28 Nov 2009 19:29:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753512AbZK2A3D (ORCPT ); Sat, 28 Nov 2009 19:29:03 -0500 Received: from ogre.sisk.pl ([217.79.144.158]:34905 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753485AbZK2A3C (ORCPT ); Sat, 28 Nov 2009 19:29:02 -0500 From: "Rafael J. Wysocki" To: Ferenc Wagner Subject: Re: [linux-pm] intermittent suspend problem again Date: Sun, 29 Nov 2009 01:29:25 +0100 User-Agent: KMail/1.12.3 (Linux/2.6.32-rc8-rjw; KDE/4.3.3; x86_64; ; ) Cc: linux-pm@lists.linux-foundation.org, Jesse Barnes , Andrew Morton , yakui.zhao@intel.com, LKML , ACPI Devel Maling List , Len Brown References: <87fx93pwv2.fsf@tac.ki.iif.hu> <200911182313.14092.rjw@sisk.pl> <87d4324gp7.fsf@tac.ki.iif.hu> In-Reply-To: <87d4324gp7.fsf@tac.ki.iif.hu> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200911290129.25505.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1507 Lines: 38 On Saturday 28 November 2009, Ferenc Wagner wrote: > "Rafael J. Wysocki" writes: > > > On Wednesday 18 November 2009, Ferenc Wagner wrote: > > > >> Ferenc Wagner writes: > >> > >>> Since I've instrumented s2disk and the hibernation path, no freeze > >>> happened during hibernating the machine. > >> > >> Not until I removed the delays from hibernation_platform_enter(), which > >> were put there previously to get step-by-step feedback. Removing them > >> again resulted in a freeze in short course, maybe just two hibernations > >> later. The instrumentation shows it stuck in dpm_suspend_start(PMSG_HIBERNATE). > >> Does it mean that some device driver is at fault? > > > > A driver or one of the platform hooks. > > > >> I'll check if it always fails at the same point (although tracing into > >> dpm_suspend_start isn't pure fun because of the multitude of devices it > >> loops over). Is there any way to get printk output from that phase? > > > > Compile with CONFIG_PM_VERBOSE (it does mean exactly that). > > The last message now was: > > e100: 0000:02:08.0: hibernate, may wakeup > > Looks like hibernating the e100 driver is unstable. Can you verify that by trying to hibernate without the e100 driver? Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/