Comment 4 for bug 1225782

I found a workaround on ubuntu gnome 13.10: just install hibernate:

sudo apt-get install hibernate

The only problem is that apport will issue three errors when starting up after normal Power Off. For this you can disable apport:

sudo gedit /etc/default/apport

Then change enabled=0.

To change settings from hibernate edit files in /etc/hibernate. In hibernate.conf you can comment "TryMethod tuxonice.conf" and "TryMethod ram.conf" and leave uncommented "TryMethod disk.conf" as for hibernate you only need to use the disk, like this:
#TryMethod tuxonice.conf
TryMethod disk.conf
#TryMethod ram.conf