Binary package hint: pm-utils
Recently, my EeePc 1005HA running the latest version of Natty lost the ability to hibernate. The "hibernate" option was removed from the shutdown menu and pm-hibernate and pm-suspend-hybrid don't do anything now. pm-suspend still suspends the laptop, but there are a number of problems with the suspend approach that make it unusable for me.
I regularly hibernate my laptop with very little battery life left and then toss it in my bag for several hours. Depending on what I'm doing, it's common for me to leave one of my laptops hibernated without power for days at a time. When suspended, both my Sony and Lenovo laptops still generate a small amount of heat. It's not much, but it still makes me uncomfortable with leaving them in the laptop sleeve in my bag for hours at a time. Hibernate has also saved me in the past when I've forgotten my power cord somewhere.
DistroRelease: Ubuntu 11.04
Package: pm-utils 1.4.1-4
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic i686
Date: Mon Jan 31 09:24:07 2011
InstallationMedia: Ubuntu-Netbook-Remix 9.10 "Karmic Koala" - Release i386 (20091028.4)