From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753022AbbDBQvI (ORCPT ); Thu, 2 Apr 2015 12:51:08 -0400 Received: from smtp.nue.novell.com ([195.135.221.5]:35858 "EHLO smtp.nue.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752220AbbDBQvG (ORCPT ); Thu, 2 Apr 2015 12:51:06 -0400 Date: Fri, 3 Apr 2015 00:50:54 +0800 From: joeyli To: Pavel Machek , rhn Cc: kernel list , joeyli.kernel@gmail.com, linux-pm@vger.kernel.org, "Rafael J. Wysocki" Subject: Re: Unreliable hibernation on Lenovo x230 (regression) Message-ID: <20150402165054.GD2320@linux-rxt1.site> References: <20150401214743.20fbe2c5@porcupinefactory.org> <20150402152805.GA17021@amd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150402152805.GA17021@amd> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Thu, Apr 02, 2015 at 05:28:05PM +0200, Pavel Machek wrote: > On Wed 2015-04-01 21:47:43, rhn wrote: > > Hello, > > > > Between kernel 3.16 and 3.17, a regression has been introduced where the first hibernation after regular shutdown always fails to resume. Subsequent hibernations succeed. > > > > The system is a Lenovo x230 with Intel i5, booting with EFI, with the hibernate partition located on a secondary SSD drive. Installed system is Fedora 20, hibernation and reboots were issued using the KDE shutdown dialog. > > > > I have tracked the problem to first appear in the commit > > e67ee10190e69332f929bdd6594a312363321a66 Merge branches 'pm-sleep', 'pm-cpufreq' and 'pm-cpuidle' > > > > The problem itself manifests in dmesg as follows (system was first > > restarted, then hibernated - this log is from the subsequent > resume): > > Ok, can you try to disable cpufreq and cpuidle, and then try if it > reproduces? > > At that point, this is the candidate: > > commit e67ee10190e69332f929bdd6594a312363321a66 > Merge: 21c806d 84c91b7 39c8bba 372ba8c > Author: Rafael J. Wysocki > Date: Mon Aug 11 23:19:48 2014 +0200 > > Merge branches 'pm-sleep', 'pm-cpufreq' and 'pm-cpuidle' > > * pm-sleep: > PM / hibernate: avoid unsafe pages in e820 reserved regions > > ... > Alternatively, you can just try to revert > > commit 84c91b7ae07c62cf6dee7fde3277f4be21331f85 > Author: Lee, Chun-Yi > Date: Mon Aug 4 23:23:21 2014 +0800 > > PM / hibernate: avoid unsafe pages in e820 reserved regions > > When the machine doesn't well handle the e820 persistent when > hibernate > resuming, then it may cause page fault when writing image to > snapshot > buffer: > > > ... > > Thanks, > Pavel Before revert 84c91b7ae patch, please check does there have log similar as following in dmesg when hibernate resume fail? [ 24.349777] PM: 0xab9bc000 in e820 nosave region: [mem 0xab9bc000-0xab9c2fff] The address may different, by you should see "e820 nosave region" log. Otherwise we got another problem. Thanks a lot! Joey Lee