Version: (using KDE 4.2.0) OS: Linux Installed from: Ubuntu Packages Steps: 1. In Power Devil, choose to suspend to ram when lid is closed on battery power 2. Unplug so running on battery power 3. Choose suspend to ram from the KMenu 4. Close the lid before suspending completes What happens: I press the spacebar, and it resumes. As soon as it finishes resuming, it suspends again. I have to press the spacebar again to make it re-resume. What should happen: Only one suspend event should be queued. This involves both HAL and the power manager. See https://bugs.edge.launchpad.net/ubuntu/+source/acpi-support/+bug/306310 for more information. That bug shows that it has already been fixed in HAL and gnome-power-manager for Ubuntu, but I can attest that the problem persists if you use Power Devil instead of gnome-power-manager.
I used to have this problem, then I've found that I've had both KDE3 power manager (forgot its name) and KDE 4 PowerDevil running. Try to kill/uninstall the old kde3 power manager. I guess it's an upgrade problem.
KDE3 has never been installed on this machine, so...no, not an upgrade bug.
This bug should actually be fixed, since now powerdevil holds a lock whenever starting a suspend action. Please reopen if you're still able to reproduce it with 4.3+