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I hadn't set up a swap partition on my PC, because a) I have plenty of RAM (8 GB) and b) I have large harddrives that I didn't want to chop into tiny pieces, so my smallest partitions are 50 GiB, and I'm already using those for the OS's.
Now, to hibernate, my Linux (Ubuntu Jaunty) required swap. I had a spare 100 GB partition so I set that up as swap, but I'm not satisfied with that. It's only ever used for hibernation (there's always plenty of RAM free and the system never goes to swap) and it's also a little large for swap. Also, I'm eventually going to need it for something else.
How can I hibernate (suspend to disk) without a swap partition in Ubuntu Jaunty?
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Here an official guide from debian about hibernate without swap: https://wiki.debian.org/Hibernation/Hibernate_Without_Swap_Partition
– Francesco – 2015-03-17T03:31:42.387Even though you have a lot of RAM, swapping can still help you also for increasing performance, when the space of unused (and therefore swapped out) application code is used for caching data. – Michael Schmid – 2017-06-11T09:53:58.177