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22.1.1 Power Conservation
The inclusion of energy-optimized system components during laptop manufacturing
contributes to their suitability for use without access to the electrical power grid. Their
contribution towards conservation of power is at least as important as that of the oper-
ating system. openSUSE® supports various methods that inuence the power consump-
tion of a laptop and have varying effects on the operating time under battery power.
The following list is in descending order of contribution towards power conservation:
Throttling the CPU speed.
Switching off the display illumination during pauses.
Manually adjusting the display illumination.
Disconnecting unused, hotplug-enabled accessories (USB CD-ROM, external mouse,
unused PCMCIA cards, WLAN, etc.).
Spinning down the hard disk when idling.
Detailed background information about power management in openSUSE is provided
in Chapter 23, Power Management (page 421).
22.1.2 Integration in Changing Operating
Environments
Your system needs to adapt to changing operating environments when used for mobile
computing. Many services depend on the environment and the underlying clients must
be recongured. openSUSE handles this task for you.
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