Comment 18 for bug 114312

I am running Gutsy64 from scratch, the hibernate sometimes works as intended, but sometimes the problem with not running fan is there.

http://blog.paulbetts.org/index.php/2007/02/11/fixing-software-suspend-hibernate-with-uswsusp-in-ubuntu-feisty-and-edgy/
The above link seems to be solving this problem completely, but I need some time for additional testing. And using this method hibernating and waking from hibernate take significantly less time.