Does hibernation use more power than a total shutdown?
The oft-given answer is no, but I can't help but wonder if that's a lie: hibernation seems to be an ACPI feature, and a completely different sleep state (S4) than, well, "off" (S5).
So, does hibernation use more power than shutdown?
If not, then why is it a different hardware state than shut down?
I forgot to mention the last part of the question, sorry:
If so, then what makes it different from shutdown, from a hardware (not driver) perspective?
Shouldn't devices not be receiving power either way?
i.e. How does a device behave differently when it is "shut down" versus when it is hibernated?