Lost Screensaver After Suspend to Ram

I lost the ability to do video suspension and screensaving after the system recovered from suspend.

Is there any quick way to re-activate the power management service after system recovered from suspend to ram? Thanks.

I am running v. 11 on Lenovo R61i. Everything works really great!

Turned out that all I need to do is activating the gnome-screensaver service.

The video suspend and screensaver are now working nicely!