Comment 22 for bug 68258

I too am experiencing this problem with a Dell XPS M140. Relevant lines from /var/log/messages:

Jun 10 02:47:07 stocksxps gnome-power-manager: (bobby) Hibernating computer beca
use the lid has been closed on ac power
Jun 10 11:10:21 stocksxps gnome-power-manager: (bobby) An unknown error occured
code='32' quark='g-exec-error-quark'
Jun 10 11:10:24 stocksxps gnome-power-manager: (bobby) Resuming computer
Jun 10 11:10:25 stocksxps gnome-power-manager: (bobby) hibernate failed

Suspend doesn't work either. I have the same problem as described above. It goes into suspend ok, but in attempting to resume the screen stays completely black and the computer requires a restart. I have tried switching from the xserver-xorg-video-i810 to the xserver-xorg-video-intel as described by https://wiki.ubuntu.com/LaptopTestingTeam/DellInspiron630m with no luck.