Does Sleeper work on portable Macintoshes?
Yes. While Sleeper duplicates many of the functions provided by the PowerBook control panel, it does provide some features missing on PowerBooks. If you have an external hard disk or monitor, Sleeper provides support for them while the PowerBook control panel does not. Sleeper’s screen saver also takes care of dimming the backlight on the LCD screen if you have the brightness for the screen saver set below 5%, and its Energy Star feature can be used to invoke the PowerBook’s CPU sleep when desired.