Power Saving Modes (Hibernate vs Suspend)

carlosinfl · 06-28-2007, 06:19 PM

I was wondering what the difference would be if I told my box to hibernate or suspend after "x" amount of minutes? I was reading a power saving guide that spoke about S3 power modes and was looking into being more energy efficient on my PC since I usually keep my Linux box at home and work running all the time.

Anyone have a general answer for those and or does any of the following carry a Linux caveat?

Agrouf · 06-28-2007, 06:43 PM

I believe suspend makes your computer stop computing and save energy until waken up, while hibernate saves the sate of the computer to HD and poweroff.

carlosinfl · 06-29-2007, 07:51 AM

Quote:

Originally Posted by Agrouf

I believe suspend makes your computer stop computing and save energy until waken up, while hibernate saves the sate of the computer to HD and poweroff.

So Hibernation actually shuts down your PC? Is there a way to wake it up like "suspend mode" or do you just have to power the box on as if it was powering on for the 1st time?

Agrouf · 06-29-2007, 09:19 AM

It is my understanding that hibernate saves all memory to a file on the disk and restores it at the next startup. So when you power on it's not exactly like the first time because all memory is restored (running programs).
On the other hand, I believe suspend uses a little power to keep memory alive while the CPU, HD and stuff sleep.