Novell LINUX ENTERPRISE DESKTOP 11 - GNOME 17-03-2009, Manual

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Figure 2.5 Power History Going From Battery Power to AC
The Power History graph shows the power history charge used by the composite primary
battery. The line represents the amount of power that is either being used to charge the
batteries in the system or the power being used by the system from the batteries. You
should see the line go up when processor intensive tasks are performed, and go down
when the system is at idle (or when the screen is dimmed). A legend is shown with this
graph when data events have been received.
You will not receive rate data from your computer if it is not charging or discharging,
or if the computer is suspended. This is due to hardware limitations (where the rate is
only sent from the battery management chip, rather than the power management chip
on the motherboard).
Depending on your hardware, other graphs will be available from the Graph Type menu.
You might also see additional hardware that can be accessed via the optional Devices
button.
2.10.2 Modifying Power Management
Preferences
The Power Management Preferences dialog box lets you control the LCD brightness
when your system is on AC or battery power, the idle time for the screen power-down
Working with Your Desktop 33