On Wed, Jun 22, 2022 at 12:00 PM Ranjan Maitra <mlmaitra@gmx.com> wrote:
On Wed Jun22'22 11:40:10AM, George N. White III wrote:
> From: "George N. White III" <gnwiii@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 <mlmaitra@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.
> >
>
> Is this a dual boot with Windows?  Did you recently get firmware updates
> from Dell?   Have you
> looked at messages using journalctl?

My apologies for overlooking such obvious necessary information. To answer your questions:

> Is this a dual boot with Windows?

No, only runs Fedora since I bought it. I believe I wiped out all partitions when it came and put up Fedora (in 2018).

> Did you recently get firmware updates from Dell?

No, sorry. I did not even check.

> 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).

Next chance, make

Searching for "systemd-hibernate-resume Could not resume from 'dev/disk/by-uuid" in the past year may give you some ideas.
Interesting hit was https://www.suse.com/support/kb/doc/?id=000020264, which says:

Specifying to attempt resuming from a hibernation image should not normally result in a failure to boot. SUSE Support has observed cases in which it does. These include:

    Security hardened systems
    Systems in which the swap device, root filesystem or /boot partition was not specified by UUID
    Otherwise improperly configured GRUB, such as duplicate resume= parameters
    Cases where the swap device was unreachable.

 
 Jun 22 06:06:50 localhost.localdomain systemd[1]: systemd-hibernate-resume@dev-disk-by\x2duuid-a83ac239\x2dcc10\x2d43a6\x2dbe54\x2dde4ce7050605.service: Deactivated successfully.

Why is ASCII "minus/dash" (-) is shown as hex "\x2d"?   I see similar entries on my Fedora 35 system.
 
--
George N. White III