Comment 12 for bug 134238

I see that s2ram is integrated in powersaved
http://packages.ubuntu.com/gutsy/admin/powersaved

" Powersave
s2ram is integrated in the latest version of powersaved, there are some configuration variables that let you select the workaround if your machine is not yet in the whitelist. They are explained here. "
http://en.opensuse.org/S2ram#Up_to_date_packages_for_various_distributions

But I have no clue how to direct you to use this.
Otherwise, have you considered using s2both?

"s2both combines the funtionalities of s2ram and s2disk and it's very useful when the battery is almost depleted. s2both write system snapshot to the swap (just like s2disk) but then put the machine into STR (just like s2ram). If the battery has enough power left you can quickly resume from STR, otherwise you can still resume from disk without loosing your work."
http://suspend.sourceforge.net/intro.shtml