Re: [Bug 75101] New: [bisected] s2disk / hibernate blocks on "Saving 506031 image data pages () ..."

From: Rainer Fiebig <jrf@mailbox.org>
To: Matheus Fillipe <matheusfillipeag@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	"Johannes Weiner" <hannes@cmpxchg.org>,
	"Rodolfo García Peñas" <kix@kix.es>,
	"Oliver Winker" <oliverml1@oli1170.net>,
	"Jan Kara" <jack@suse.cz>,
	bugzilla-daemon@bugzilla.kernel.org, linux-mm@kvack.org,
	"Maxim Patlasov" <mpatlasov@parallels.com>,
	"Fengguang Wu" <fengguang.wu@intel.com>,
	"Tejun Heo" <tj@kernel.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	killian.de.volder@megasoft.be, atillakaraca72@hotmail.com
Subject: Re: [Bug 75101] New: [bisected] s2disk / hibernate blocks on "Saving 506031 image data pages () ..."
Date: Wed, 3 Apr 2019 10:23:46 +0200	[thread overview]
Message-ID: <8bfe1578-6ace-4bb2-5a31-295660f0f8a4@mailbox.org> (raw)
In-Reply-To: <CAFWuBvcAFhhPk4K-w7OLVBo8psWuDdUP4hJNLq3QeFUyg=_Mow@mail.gmail.com>

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Am 03.04.19 um 05:54 schrieb Matheus Fillipe:
> Wow! Here I am to revive this topic in 2019! I have exactly the same
> problem, on ubuntu 18.04.2 with basically all kernels since 4.15.0-42 up to
> 5, which was all I tested, currently on 4.18.0-17-generic... I guess this
> has nothing to do with the kernel anyway.
> 
> It was working fine before, even with proprietary nvidia drivers which
> would generally cause a bug on the resume and not while saving the ram
> snapshot. I've been trying to tell this to the ubuntu guys and you can see
> my whole story with this problem right here:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1819915
> 
> Shortly, I tried with or without nvidia modules enabled (or intel or using
> nouveau), many different kernels, disabled i915, and this is all  get in
> all those different combinations:
> https://launchpadlibrarian.net/417327528/i915.jpg
> 
> The event is pretty random and seems to be more likely to happen after 2 or
> 4 gb of ram is ever used (I have 16 in total), and nothing changes if later
> I reduce the ram usage later. But is random, I successfully hibernated with
> 11gb in use yesterday, just resumed and hibernated 5 seconds later without
> doing nothing else  than running hibernate, and got freeze there.
> 
> This also happens randomly if there's just 3 or 2 gb in use, likely on the
> second attempt of after more than 5 minutes after the computer is on. What
> can be wrong here?
> 

The last time that I've encountered this issue was sometime in 2017
under conditions described in Comment 23. And that's true for
s2both/s2disk and the kernel-methods.

It seems that you are using the uswsusp package. In that case it might
be worth taking a look at the settings in /etc/suspend.conf. What works
here is:

#image size = 3500000
early writeout = n
#threads = y

If this doesn't help, you should try hard to figure out what has changed
from Ubuntu 18.04.1 to 18.04.2 as it worked with the former for you.

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