On Fri, Apr 03, 2015 at 12:50:54AM +0800, joeyli wrote: > 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 <rafael.j.wyso...@intel.com> > > 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 <joeyli.ker...@gmail.com> > > 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. >
Forgot to mention, please add "debug no_console_suspend=1 loglevel=9" to kernel parameter then try to reproduce issue and look at dmesg. Thanks a lot! Joey Lee -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
