To use hibernation, the swap-partition must be at least a bit bigger than your RAM in the computer.
Elogind is just a replacement for the systemd-related logind - afaik.
I can tell you if you perform a standard installation (devuan desktop) you will most certainly get a well working system.
Also: I had very good results every-time with Devuan - OpenRC - Cinnamon or XFCE, on most of the hardware I tested.
And again: RTFM! (Read The Fascinating Manuals)

https://drive.google.com/file/d/1SkXRqe … drive_link

now this however was a ubuntu 24.04 and has systemd, but it function now there.
(fyi> i did not need create the part with "/etc/polkit-1/etc.")

hibernate can be evoken "sudo systemctl hibernate" or via "sudo pm-hibernate"
bit cumbersome process, but it can function.

will see if can implant it later on, but seems difficult.
the automatic installer could ask if one wants this feature, which is especially useful on laptops'?

As for triggering hibernation from the CLI, that would be either 'loginctl hibernate' (if you have [e]logind installed, which IIRC is the default setup) or 'pm-hibernate' from the pm-utils package.

usually for hibernation you want about 1.5x the size of your ram for either a partition or a file

noticed that this laptop has gotten the automatic install of devuan, but has only 1GB Swappartition allocated.
The RAM size is probably 4GB.

Is this a Bug?
How can i properly let the laptop go into hibernation after some time, since the battery is not so good on this T60.

xfce4-power-manager --dump
---------------------------------------------------
       Xfce power manager version 4.18.1
With policykit support
With network manager support
---------------------------------------------------
Can suspend: True
Can hibernate: True
Authorised to suspend: True
Authorised to hibernate: True
Authorised to shutdown: True
Has battery: True
Has brightness panel: True
Has power button: True
Has hibernate button: True
Has sleep button: True
Has battery button: True
Has LID: True

thank you!