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Full disk encryption - Hibernation and unlocking
(feddit.org)
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Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
It should work with just one swap (encrypted), unless the swap is full at the moment of hibernation attempt.
mkinitramfs
-generated script should ask for the LUKS password, then it would start loading the pages.Note that hibernation in general may fail to work (regardless of encryption) if, for example, a signed kernel and Secure Boot is used.