Is it possible to add “hibernate” and “hybrid sleep” buttons in the shutdown menu?
Doesn’t work: Hibernate Status Button - GNOME Shell Extensions
Yes, with an extension. That’s the only way.
Sorry, that doesn’t help anyone help you.
Please see:
Please see:
Like this 
I use Bring Out Submenu Of Power Off Button - GNOME Shell Extensions
You need to make sure you have swap and bigger than ram size. Usually when installed wiping the system it will make a swap partition for you but if you kept windows and resized/repartitioned then you might not have a swap partition, but a swapfile works the same.
I only use hibernate tho. No hybrid sleep because it supposedly doens’t work with windows dual boot. Just hibernate works fine when I do it to both and that also not supposed to be done 