had the same issue, fixed with newer mainline kernel
Ubuntu 16.04 xenial
Intel Core i7-3520M CPU @ 3.6GHz x86_64
using repo HWE kernel (linux-image-generic-hwe-16.04):
4.13.0.36.55 ---> hibernation broken
using mainline kernel (linux-image-4.15.9-041509-generic):
4.15.9-041509-generic ---> hibernation works
how to install (bc people asked and I don't want to clutter bug report):
https://pastebin.com/3Cg4jeeH
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https://bugs.launchpad.net/bugs/1743094
Title:
[regression] hibernation (freezes on resume) since 4.13.0-25.29
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