Just installed Cinnamon 3.2.8 in Ubuntu 16.04.1. The Screensaver/Lock Screen wouldn't turn blank after a few minutes, and would remain on a Screensaver Mode all night. The computer just wouldn't sleep after I lock it. What should I do in order that the Lock Screen will turn blank? I cannot possibly find an option in the Screensaver's Settings.
Help much appreciated. Thank you.
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