To be |TRUE| you’ll need some hardware that is mostly open. I believe the Asus C201p is quite close.

Some info: https://www.tuxedocomputers.com/en/Power-management-with-suspend-for-current-hardware.tuxedo

https://www.tuxedocomputers.com/en/Infos/Help-Support/Help-for-my-device/TUXEDO-Book-XP-series/TUXEDO-Book-XP1610/Improvements-to-sleep-mode.tuxedo

This is from Gentoo and has some things that are Gentoo specific, but others that are agnostic: https://wiki.gentoo.org/wiki/Suspend_and_hibernate

Hope you find a solution!