On Fri, Apr 03, 2015 at 11:43:30PM +0200, Rafael J. Wysocki wrote:
> On Friday, April 03, 2015 05:58:25 PM rhn wrote:
> > On Thu, 2 Apr 2015 17:28:05 +0200
> > Pavel Machek <[email protected]> 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 <[email protected]>
> > > 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 <[email protected]>
> > > 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
> >
> > I tried to disable CONFIG_CPU_IDLE and CONFIG_CPU_FREQ, however for some
> > reason I could only disable CONFIG_CPU_FREQ.
> >
> > The bug persisted.
> >
> > Reverting the commit 84c91b7 on top of e67ee10 fixes the problem.
> >
> > I created a copy of the bug report here:
> > https://bugzilla.kernel.org/show_bug.cgi?id=96111
>
> Please check if 4.0-rc6 still has the problem and if reverting the commit in
> question on top of it fixes the problem too.
>
>
> --
> I speak only for myself.
> Rafael J. Wysocki, Intel Open Source Technology Center.
I think just revert 84c91b7ae until Yinghai Lu's patches merged to v4.1.
I will resend 84c91b7ae patch until Yinghai Lu's patches merged.
Regards
Joey Lee
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
