When I run
xfce4-session-logout --hibernate it seems to work. However, it fails to recover the session and starts up as a normal reboot (yet slower).
Hibernation works both with the commands
"systemctl hibernate" and "s2disk" (I manually installed uswsusp).
I see two possible ways forward:
1) Fix the
xfce use either of the other two hibernation commands
However, I failed at both.