Re: Unreliable hibernation on Lenovo x230 (regression)

From: Pavel Machek
Date: Thu Apr 02 2015 - 11:28:13 EST

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

Ok, can you try to disable cpufreq and cpuidle, and then try if it

At that point, this is the candidate:

commit e67ee10190e69332f929bdd6594a312363321a66
Merge: 21c806d 84c91b7 39c8bba 372ba8c
Author: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
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.kernel@xxxxxxxxx>
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
resuming, then it may cause page fault when writing image to


(cesky, pictures)
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