Hello!
I have a desktop. It has rear and front USB ports.
When I power off the computer, only the front USB ports are powered on. The rear ports are not. Thus, I can use the front ports to power on the computer (e.g., using the keyboard --- BIOS function).
However, when I hibernate, ALL ports are powered, and I can use a keyboard on the rear ports to achieve the same thing.
So, my question is: does the computer know if it was powered down on the S4 or G2 state (ACPI) ? I mean, even if perform a "mechanical power off" and power on again, does the computer know if it was previously hibernated or if it was powered off? It's the only thing that come to my mind, because I do know that hibernate is not dependent on energy being continuously supplied, like Suspend (to RAM), for example.
Thank you.
I have a desktop. It has rear and front USB ports.
When I power off the computer, only the front USB ports are powered on. The rear ports are not. Thus, I can use the front ports to power on the computer (e.g., using the keyboard --- BIOS function).
However, when I hibernate, ALL ports are powered, and I can use a keyboard on the rear ports to achieve the same thing.
So, my question is: does the computer know if it was powered down on the S4 or G2 state (ACPI) ? I mean, even if perform a "mechanical power off" and power on again, does the computer know if it was previously hibernated or if it was powered off? It's the only thing that come to my mind, because I do know that hibernate is not dependent on energy being continuously supplied, like Suspend (to RAM), for example.
Thank you.
