Weird thing with the laptop tonight. I got home and it wouldn't stop hibernating. Not until I shut the power off cold, turned it on again and put up with all the restarting rigamarole. Which is probably not the best thing to do, but then neither is muling opium from Turkey, which I bring up for no particular reason.
No, I've looked this problem up and they suggest updating some drivers. This is worth a try, I just couldn't do it in the moment.