Try /etc/login.d directory?
Maybe systemd is doing another takeover.? See if you can find a relevant service?
Try /etc/systemd/logind.conf
Try ps ax | grep login . Does it find logind running?
We have to solve this. An OS that sleeps permanently is unusable.
Have a look at this topic
Especially reply no 4
Update : I found something
" The /etc/sddm.conf file is where the configuration for the SDDM login manager is stored on KDE Neon, although many settings can also be managed through the System Settings application under Startup and Shutdown > Login Screen. "
and
" KDE stores sleep configuration files in
your user’s configuration directory, primarily in ~/.config/, and specifically, the power management settings are typically located in ~/.config/powermanagementprofilesrc. Older or less common settings might be found in ~/.kde/ or ~/.kde4/ directories, though ~/.config/ is the modern standard. "
Hey, what are they doing configuring a system-wide thing like sleep in users home directory? It is not like you can sleep one user’s part of the system? Crazy.
This may also be useful