"I want to suspend the gui, and have my laptop enter sleep, but keep sshd active and wake to ultra-low-power mode on connection"

bonus points if there's also a way to do this on mac OS X+

edit:

i feel like Linux laptops really need "low power low heat stay accessible in backpack" mode -- your phone is terminal enough sometimes

I'm realizing the real answer here is sell the laptop and buy a good linode subscription but I'd rather own the hardware