Configuring Power Management in Ubuntu

Click the Power icon in the System Settings menu to control how Ubuntu handles power-saving features in specific situations (see Figure 1.11). You can have the display dim the backlight to use less power when on battery, put the display to sleep after a certain amount of inactivity, spin down your hard disks (kind of like turning them off, but not completely; this just makes them stop moving until a request is made from them, saving power in the interim), and set your computer to suspend, hibernate, or turn off when the battery reaches a certain level.

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FIGURE 1.11 Configure specific power-related actions ...

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