Comment 37 for bug 226279

OK, my next theory is the that scheduler change from CONFIG_FAIR_USER_SCHED to CONFIG_FAIR_CGROUP_SCHED has broken suspend, so I've built a kernel with the original scheduler setting. Please test by loading and running the kernel/lum packages from http://people.ubuntu.com/~rtg/linux-2.6.24-19. For example (if you are running the 64 bit kernel):

wget http://people.ubuntu.com/~rtg/linux-2.6.24-19/linux-image-2.6.24-19-generic_2.6.24-19.33_amd64.deb
wget http://people.ubuntu.com/~rtg/linux-2.6.24-19/linux-ubuntu-modules-2.6.24-19-generic_2.6.24-19.26_amd64.deb
sudo dpkg -i linux-image-2.6.24-19-generic_2.6.24-19.33_amd64.deb linux-ubuntu-modules-2.6.24-19-generic_2.6.24-19.26_amd64.deb
sudo reboot