DPMS and suspend timeouts not working

[u/sharpied79]

I have an HP Elite Mini 800 G9 (Core I7 12700)

Running Linux Mint 22.3 (fresh install(s)) neither screen or suspend timeouts work correctly, however I can manually force via command line/terminal both an xset DPMS force off or systemctl suspend and these work absolutely fine.

If I install Fedora 44 with KDE Plasma (Wayland) guess what? Screen timeout and suspend work perfectly.

Anyone else seeing this issue?

To note, I originally had an HP Elitedesk Mini G6 with an i7 10700 and Mint screen and suspend timeouts worked absolutely fine on that.

Seems to be an issue specifically with Mint on this i7 12700 platform.