If you installed Ubuntu Precise Pangolin on a laptop, you probably noticed that hibernate is missing. Out of the box, Ubuntu 12.04 only offers suspend. In some cases, you need hibernate (e.g., when your computer’s battery is critically low and you don’t want to lose your work, or when you don’t have power to save the suspend state). Here are details about the two states:
- Suspend: This state is like putting the computer to sleep. The computer will remain powered on and all of your work will be left open, but it will use much less power. You can wake the computer by pressing a key or clicking the mouse.
- Hibernate: This state is basically turning the computer off completely while saving the current state of the computer (such as keeping all of your open documents). When you turn the computer back on from hibernation, all of your work should be restored as it was before hibernation. No power is used during this state.
I have no idea why hibernate was not included in 12.04, but I do know how you can add it to your system. Follow these steps as I describe how to get hibernate back.
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