computer will not wake up after it has been set to hibernate or suspend

Binary package hint: hibernate

I have tried both hibernate and suspend, multiple times, and my computer will not wake up when I use either of them. I have to hard-reboot the computer by holding down the power button to get it to restart. And one time after restarting from a failed hibernation, my computer did not detect mouse or keyboard, so I had to hard-reboot again.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: hibernate (not installed)
ProcVersionSignature: Ubuntu 2.6.32-24.42-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Tue Sep 14 06:46:13 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: hibernate