I could have sworn I did a copy/paste of the original text by fsmithred.
Evidently not.

In other words, a syntax error (?)

Thank you for taking the time to explain all this.
Learn something every day.

And I should have checked ...  8^°

But it worked, I am no longer getting that line in my dmesg:
ie:

--- snip ---
[   24.068315] PM: Image not found (code -22)
--- snip ---

Thank you very much for your input.

Best,

A.

Since the file gets processed as a shell script (i.e. sourcing it into the exection of /usr/sbin/mkinitramfs) you got to experience the shell script difference between the two lines lines:

RESUME=none
RESUME= none

The first line sets RESUME to "none" within mkinitramfs while the second line sets RESUME to  the empty string for a sub shell attempting to execute a program named "none".

It's a simple mistake to make and clearly the usability coefficient for initramfs-tools has room to be raised. In fact, one could say that that way of loading variables has big clown feets well into the security risk space.

Not willing to let it go at that, I went over the error message again ...

# update-initramfs -u
--- snip ---
/usr/sbin/mkinitramfs: 5: /etc/initramfs-tools/conf.d/resume: none: not found
--- snip ---
#

... because it had to be a spelling or syntax problem.
ie: my bad.

I tried with misspelling none -> nones and got this:

# update-initramfs -u
--- snip ---
W: initramfs-tools configuration sets RESUME=nones
W: but no matching swap device is available.
--- snip ---
#

The system does not find a matching swap device, but that is not the error I previously had.

So I tried using the syntax that the error message actually printed out, ie: resume: none <- a space in the wrong place
and then got the original error message:

# update-initramfs -u
update-initramfs: Generating /boot/initrd.img-6.1.0-28-amd64
/usr/sbin/mkinitramfs: 5: /etc/initramfs-tools/conf.d/resume: none: not found
I: The initramfs will attempt to resume from /dev/sda3
I: (UUID=f0187ff0-be52-4bbc-9461-40f744554b85)
I: Set the RESUME variable to override this.
live-boot: core filesystems dm-verity devices utils udev blockdev dns.
# 

So ...
Mystery solved.
ie: a severe case of PEBCAK.  8^°

Once again, thanks for your input.

Best,

A.

I had deleted the edited file and returned to the back-up I saved.
So I re-edited it now.

$ cat /etc/initramfs-tools/conf.d/resume
# changed 06122024
# see https://dev1galaxy.org/viewtopic.php?pid=53266#p53266
# this box does not use hibernation / resume

RESUME=none

# RESUME=UUID=f0187ff0-be52-4bbc-9461-40f744554b85
$ 

But now it works.

# update-initramfs -u
update-initramfs: Generating /boot/initrd.img-6.1.0-28-amd64
live-boot: core filesystems dm-verity devices utils udev blockdev dns.
#

I'm sure I had written / spelled it correctly.

But if it did not work, there was obviously something amiss.
Maybe the added comments?
Not so sure now.  8^/

Thank you very much for your input.

Best,

A.

$ cat /etc/initramfs-tools/conf.d/resume
RESUME=UUID=f0187ff0-be52-4bbc-9461-40f744554b85
$ 

$ sudo blkid
--- snip ---
/dev/sdb3: UUID="f0187ff0-be52-4bbc-9461-40f744554b85" TYPE="swap" PARTUUID="0004a8f4-03"
--- snip ---
$ 

No, just that one.

$ ls /etc/initramfs-tools/conf.d/
resume
$ 

Thank you for your input.

Best,

A.

Is there another file in /etc/initramfs-tools/conf.d/ ? If so, which, and please show it too.

This topic is a split from this this thread.
(See posts #19 / #20)

--- split ---

--- /split---

That is exactly what my box has and the UUID is the swap file.
But it happens that I do not keep my system on all day, just shut down and reboot as needed.
ie: there is no hibernation image present, never set it up to hibernate.

At some point my dmesg printout reads:

--- snip ---
[   24.068315] PM: Image not found (code -22)
--- snip ---

Q:
Does the system look for a hibernation image at boot time because the line in /etc/initramfs-tools/conf.d/resume is not set to =none and there is a valid (swap file) UUID present?

If I edit /etc/initramfs-tools/conf.d/resume and set RESUME=none, on updating I get this:

# update-initramfs -u
update-initramfs: Generating /boot/initrd.img-6.1.0-28-amd64
/usr/sbin/mkinitramfs: 5: /etc/initramfs-tools/conf.d/resume: none: not found
I: The initramfs will attempt to resume from /dev/sdb3
I: (UUID=f0187ff0-be52-4bbc-9461-40f744554b85)
I: Set the RESUME variable to override this.
live-boot: core filesystems dm-verity devices utils udev blockdev dns.
# 

The system looks for a swap file and not finding one with a UUID of none, finds one with a valid UUID and uses it.
But like I said, I never set the system up for hibernation and although the system finds a swap file to hibernate, it does not (as dmesg indicates) find an image. (I am assuming it is a hibernation image)

How to solve this?
Thanks in advance.

Best,

A.