Suspend and hibernation are both cursed features due to weird nonstandard ACPI fuckery and hardware devices that don't cleanly know how to bring itself back up.
The last time I successfully enable hibernation, it took more tike (to save and boot from hibernate) than booting fresh and restore session.
I had 32GB of RAM and XFCE as DE.
Odd, not my experience at all.
I use swapfiles, which makes hibernation slightly more difficult than a partition. Depending on the filesystem there are even different steps (btrfs).
What do you mean by «support»? In my Debian install I created an encrypted partition + LVM and I can hibernate without issue. I believe Ubuntu has an install option for encryption, so I think it should also work.
Full hibernate? Hybrid with power might work, but if the battery dies the default way doesn't work.
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
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