On 6/22/22 07:59, Ranjan Maitra wrote:
On Wed Jun22'22 11:40:10AM, George N. White III wrote:
From: "George N. White III" <gnw...@gmail.com>
Date: Wed, 22 Jun 2022 11:40:10 -0300
To: Community support for Fedora users <users@lists.fedoraproject.org>
Reply-To: Community support for Fedora users <users@lists.fedoraproject.org>
Subject: Re: fully updated F36 Dell XPS 13 no longer comes back from
  hibernate (post Thursday updates)

On Wed, Jun 22, 2022 at 8:43 AM Ranjan Maitra <mlmai...@gmx.com> wrote:

Dear friends,

I have a fully updated F36 Dell XPS 13 that has been updated nightly (and
upgraded when appropriate) using dnf on a cron job for the past few years.
Sadly, after last Thursday's updates, the machine goes down fine (with the
usual systemctl hibernate), but does not come back up. I am a little
confused what changed last Thursday, but I was wondering if anyone had any
suggestions as to how I may diagnose and fix this problem.

Have you looked at messages using journalctl?

So, I don't really know what to look for, but I tried:

journalctl | grep hibernate

and got:

  Jun 22 06:06:49 localhost.localdomain systemd[1]: Created slice 
system-systemd\x2dhibernate\x2dresume.slice - Slice 
/system/systemd-hibernate-resume.
  Jun 22 06:06:50 localhost.localdomain systemd[1]: Starting 
systemd-hibernate-resume@dev-disk-by\x2duuid-a83ac239\x2dcc10\x2d43a6\x2dbe54\x2dde4ce7050605.service
 - Resume from hibernation using device 
/dev/disk/by-uuid/a83ac239-cc10-43a6-be54-de4ce7050605...
  Jun 22 06:06:50 localhost.localdomain systemd-hibernate-resume[390]: Could 
not resume from '/dev/disk/by-uuid/a83ac239-cc10-43a6-be54-de4ce7050605' 
(259:4).
  Jun 22 06:06:50 localhost.localdomain systemd[1]: 
systemd-hibernate-resume@dev-disk-by\x2duuid-a83ac239\x2dcc10\x2d43a6\x2dbe54\x2dde4ce7050605.service:
 Deactivated successfully.
  Jun 22 06:06:50 localhost.localdomain systemd[1]: Finished 
systemd-hibernate-resume@dev-disk-by\x2duuid-a83ac239\x2dcc10\x2d43a6\x2dbe54\x2dde4ce7050605.service
 - Resume from hibernation using device 
/dev/disk/by-uuid/a83ac239-cc10-43a6-be54-de4ce7050605.
  Jun 22 06:06:50 localhost.localdomain audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 
ses=4294967295 subj=kernel 
msg='unit=systemd-hibernate-resume@dev-disk-by\x2duuid-a83ac239\x2dcc10\x2d43a6\x2dbe54\x2dde4ce7050605
 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? 
res=success'
  Jun 22 06:06:50 localhost.localdomain audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 
ses=4294967295 subj=kernel 
msg='unit=systemd-hibernate-resume@dev-disk-by\x2duuid-a83ac239\x2dcc10\x2d43a6\x2dbe54\x2dde4ce7050605
 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? 
res=success'


Note however, that this is after the machine was asked to reboot since the 
system never came back from hibernate so I am not completely sure it has the 
information from not coming back.

What do you mean "doesn't come back up"? Usually the problem is that you get a normal boot instead of a resume. That would correspond to the logs that you're showing there. The other thing to check is the last bit of the logs from the previous boot.

I also suggest looking at some lines in that area that might not have been caught by the grep. Maybe there is a reason listed for why the resume failed.
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