On Sat, 2019-11-09 at 18:26 +0000, steve-ALUG@hst.me.uk wrote:

Howdy

I brought a 2nd hand Thinkpad T430 & I've tweaked it so that Hibernate appears on the shutdown menu.

In a command prompt, the command sudo pm-hibernate writes to disk and shuts down. Switching on brings the machine back to the state it was in on shutdown.

Launching Hibernate from the startup menu, or from a command prompt typing sudo systemctl hibernate both write to the disk and shutdown, but on boot up, they start a fresh session, as if starting up from scratch.

Anyone got any ideas how to successfully hibernate from the shutdown menu?

No, but that sounds suspiciously like an environment problem.