gnome-power-manager is responsible for determining when the system should resume from suspend. If it's randomly resuming it seems likely the issue lies in there.
** Package changed: ubuntu => gnome-power-manager (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1319113 Title: Wakes up from suspend by itself To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/1319113/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs