Hi Jean-Michel, Try running
# sudo mkswap /dev/sda3 to recreate the swap area. In fact, run it now before continuing. See the last paragraph. I think that both of your problems have the same cause, and one that's easily fixed. To resume from hibernation, Linux needs to be told where the hibernation image was stored. It does not do this by itself. It also won't erase stale hibernation images, which is why you can't swapon. You need to add (kernel-arguments (list "resume=/dev/sda3")) to your system configuration, or append that string to the list if you already have a kernel-arguments field. Then reconfigure for the boot loader to be updated. Passing "resume=here-the-uuid-numbers-and-letters" instead of a device file name *should* also work, but it's not something I heavily tested since adding hibernation support. I've always used device file names. Until you can successfully hibernate and resume, you MUST run that mkswap at the top of this message after each failed attempt. You risk total corruption of all mounted file systems if you don't. Kind regards, T G-R Sent on the go. Excuse or enjoy my brevity.
