Comment 9 for bug 305339

One more correlary.

There doesn't seem to be a hibernate option from the Gnome menu system any more.

When I tried the /etc/acpi/hibernate.sh script from a terminal window within Gnome, the machine did not hibernate to the point of turning off. It partially turned off: the Gnome display went dark, and I was unable to recover my Gnome session (or any Gnome session), but the computer was still on. Eventually escaped to tt1 and did sudo halt, and then rebooted, since alt-f7 just got me back to the dark screen, not Gnome.

I also tried sudo /etc/acpi/hibernate.sh from a TTY window. That worked fine - the machine hibernated, and woke up fine.

So again, hibernate seems to have the same problem as sleep: it works OK if run from the /etc/acpi scripts from a TTY console window, but not if run from within Gnome.