Trying to configure hibernate / resume

[Richmond <dnomhcir@gmx.com>]

Hibernate does not seem to be available on my system. My desktop is
Mate. When the system was installed I accepted the default swap space
size but this was way to small, only 1G for a system with 8G of RAM.

So I made a new swap space and set it up in /etc/fstab and set it up as
resume.

"
systemctl hibernate 
Call to Hibernate failed: Sleep verb "hibernate" not supported
"

So, I check that I have only one swap space and it is larger than RAM. I
have it configured in /etc/fstab

I also make sure that this is in /etc/initramfs-tools/conf.d/resume

I run:

update-initramfs -u
update-grub2

But when I check:

cd /etc/grub.d/
find . -print|xargs grep resume

There is no resume command line parameter for kernel 6 which I am using,
although there are for older kernels, but they have the wrong resume
partition in them.

Also I reboot the system and edit the debian menu entry and see there is
no resume command line parameter.

How do I get that resume space as a command line parameter and enable
hibernation?