I have never been able to make hibernation (suspend to disk) work on my laptops (Dell M3800 and Dell XPS 13 9370) on Ubuntu with systemd. The symptom was that running [crayon-675014bc85be5858442295/] was making the system shutdown, but then upon restart the system was not restored: it was just like booting the system from scratch. … Continue reading Enabling Hibernation on Ubuntu 20.04