I seem to be able to hibernate OK using s2disk, but when I switch the laptop back on, it seems to hang half-way through the "resuming" menu. The splash screen looks healthy, it seems to be trying to resume from the correct disk, but it hangs about half-way through, with three little pips.

One great help would be - where can I find the logs, and how do I get more verbose ones?

There is some info in /var/log/pm-suspend.log, but that all seems fine, just lots of hibernate: success messages...

How do I switch on more verbose logging in s2disk? And what about the resume process, where are the logs for that, and how can I make them more detailed?

Background: the standard Ubuntu hibernate wouldn't work, so I've install uswusp and its associated tools - s2disk etc. That initially made things worse, but a fair amount of fiddling with its config, my swap size and so on seem to have got it at least seemingly successfully suspending...