[xubuntu-users] hibernation in Xubuntu 17.04

[Mike Miller]

I think my first attempt to post got stuck in moderation (recapped
below).  I am new to the list and I wasn't properly subscribed when I
sent it.

I've been working on this for many hours with only some progress.
Suspend always worked.  Hibernate (to disk) has not worked, yet.

Using "Hibernate" from the system's "Log Out" menu, the screen blanks,
it shuts down, but when I power back up it seems to go through a
normal boot process and I don't recover my previous state.

Using sudo "pm-hibernate", I can see it saving the page files, and
when I try to recover I see it loading the page files up to 99% and
the screen blanks.  After that I get only a black screen.  It responds
to nothing, so I have to power off.

Any ideas?

Best,
Mike

---------- Forwarded message ----------
From: Mike Miller <mbmiller+l at gmail.com>
Date: Wed, Jun 28, 2017 at 6:45 PM
Subject: hibernation in Xubuntu 17.04
To: xubuntu-users at lists.ubuntu.com


Installation of 17.04 on my laptop was a breeze.  Truly a joy and it's
working great, except for this one bothersome thing.  Maybe there is a
FAQ, but I didn't find it and things might be a little different with
17.04 because of the use of swapfiles instead of swap partitions.

I discovered that pm-hibernate wasn't installed by default, so I
installed the pm-utils.  However, when I try to use it (as in sudo
pm-hibernate), I got an error.  Logs show it goes through all of the
steps perfectly right up until it is supposed to hibernate, then it
fails and goes back through a series of "wake" steps.  So the screen
blacks for a sec and I'm back to the bash prompt.

The error I see in /var/log/pm-suspend.log is

sh: echo: I/O error

That follows immediately after "performing hibernate" and before
"Awake."  There are only three seconds between those lines.

My guess, based on some searches, was that my problem was that I
didn't have a proper swapfile.  Now we use swapfile instead of swap
partition, right?  So I looked for info on how to create that
swapfile, and it seemed to work.  I think I have a proper swapfile but
I'm not sure how to test that.  sudo swapon --show seems to give
appropriate output but I'm not sure what PRIO of -1 is telling me.

Any ideas?

Best,
Mike