I am having problem with hibernate. I have ubuntu 20.04LTS and it doesn't hibernates

When i do sudo hibernate, it gives me this error :

hibernate:Warning: Tuxonice binary signature file not found.
Some modules failed to unload: nvidia_drm nvidia_modeset nvidia
hibernate: Aborting suspend due to errors in ModulesUnloadBlacklist (use --force to override).

What to do?

I've had this issue and after some testing I was able to go to hibernate on Ubuntu 20.04.2.

conclusions:

1. hibernate won't work with Nvidia's On-demand prime profile, but works with Performance or Intel profile
2. works fine with pm-hibernate from pm-utils package (sudo apt install pm-utils)