On Thursday, 25 April 2024 22:29:01 BST Wojciech Kuzyszyn wrote: > Hello! > > Quick question: is it possible to use hibernation (suspend to disk) > with no initramfs?
Yes. > I don't have one and don't want to have one. So I'd > rather disable hibernate in kernel (so I won't do this by accident) or > leave it to use it happily when needed. You have to specify a swap block device - a swap partition, or a preconfigured swap file on an already mounted partition - in your kernel configuration, for hibernation to work, e.g.: [*] Hibernation (aka 'suspend to disk') [*] Userspace snapshot device (/dev/sdb6) Default resume partition This swap device will be used at hibernation time to compress and store what is running in your RAM. Since the contents of your RAM will be compressed less space will be required than the size of your RAM. However, if you are using RAM heavily when you try to hibernate, e.g. because you are compiling some large package, have many memory hungry applications open, etc., you may find hibernation fails due to lack of space. This would be more acute if your RAM is not large enough and swap is used on a regular basis. With large enough RAM less swap space will be used, since swap would be virtually empty. Therefore size your swap device accordingly.
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