I recently hooked up an external Acer 23" monitor to my laptop (set as the single display) and now the laptop nor monitor will go to sleep anymore. I have the screensaver set to come on after 10 mins, monitor to sleep after 15, and harddrive to sleep after 20. Right now the only thing working is the screensaver. All the power options are set the same and I'm stumped.
HP dv6748us laptop, always plugged in (battery not installed), options set to "do nothing when lid closes" (external is now the only display).