advertisement
Power Management
Your notebook has many options and features for conserving battery power. Some are automatic and need no user intervention. However, others depend on parameters you set to best suit your operating conditions, such as those for the display brightness. Internal power management can be controlled by settings made in the operating system, power management application, or settings made in BIOS setup utility.
Besides the options available for conserving battery power, there are also some things that you can do to prevent your battery from running down as quickly. For example, you can create an appropriate power saving profile, put your notebook into Sleep mode when it is not performing an operation, and you can limit the use of high power devices.
As with all mobile, battery powered computers, there is a trade-off between performance and power savings.
Power/Suspend/Resume Button
When your notebook is active, the Power/Suspend/Resume button can be used to manually put the notebook into
Sleep mode. Push the Power/Suspend/Resume button when the notebook is active, but not actively accessing anything, and immediately release the button. Note that if you press the button continuously for four seconds or longer, your notebook will shut down.
If your notebook is suspended, pushing the Power/Suspend/Resume button returns your notebook to active operation. You can tell whether the system is Suspended by looking at the Power indicator. If the indicator is visible and not flashing, your notebook is fully operational. If the indicator is visible mode. If the indicator is not visible, the power is off or your notebook is in Hibernation mode.
Feature) and
flashing, your notebook is in Sleep
(See Hibernation
Sleep Mode
Sleep mode in Windows saves the contents of your system memory during periods of inactivity by maintaining power to critical parts. This mode turns off the CPU, display, hard drive, and all other internal components except those necessary to maintain system memory and for restarting.
Your notebook will go into Sleep mode due to one of the following actions or conditions:
•
Pressing the Power/Suspend/Resume button when your system is turned on.
•
Selecting Sleep from the Windows Shut Down menu.
•
Timing out from lack of activity.
45 - Power Management
•
Allowing the battery to reach the Dead Battery Warning condition.
System memory typically stores the files on which you are working, open application information, and any other data required to support operations in progress. When you resume operation from Sleep, your system will return to where it left off. You must use the Power/Suspend/Resume button to resume operation, and there must be an adequate power source available, or your notebook will not resume.
•
I
F RUNNING YOUR NOTEBOOK ON BATTERY POWER
,
BE AWARE THAT THE BATTERY CONTINUES TO DISCHARGE WHILE YOUR NOTEBOOK IS IN
S
LEEP
MODE
,
THOUGH NOT AS FAST AS WHEN FULLY OPERATIONAL
.
•
D
ISABLING THE
P
OWER
/S
USPEND
/R
ESUME BUTTON PREVENTS IT FROM BEING USED TO PUT THE NOTEBOOK INTO
S
LEEP OR
H
IBERNATION
(S
AVE
-
TO
-D
ISK
)
MODE
. T
HE BUTTON RESUME FUNCTION CAN
’
T BE DISABLED
.
•
I
F YOUR NOTEBOOK IS ACCESSING INFORMATION WHEN YOU ENTER THE
S
LEEP OR
H
IBERNATION MODE
,
CHANGES TO OPEN FILES ARE NOT LOST
.
T
HE FILES ARE LEFT OPEN AND MEMORY IS KEPT ACTIVE DURING
S
LEEP MODE OR THE MEMORY IS TRANSFERRED TO THE INTERNAL HARD DRIVE
DURING
H
IBERNATION MODE
.
•
T
HE MAIN ADVANTAGE OF USING
H
IBERNATION
(S
AVE
-
TO
-D
ISK
)
IS THAT POWER IS NOT REQUIRED TO MAINTAIN YOUR DATA
. T
HIS IS PARTICULARLY
IMPORTANT IF YOU WILL BE LEAVING YOUR NOTEBOOK IN A SUSPENDED STATE FOR A PROLONGED PERIOD OF TIME
. T
HE DRAWBACK OF USING
H
IBERNATION MODE IS THAT IT LENGTHENS THE POWER DOWN AND POWER UP SEQUENCES AND RESETS PERIPHERAL DEVICES
.
Hibernation (Save-to-Disk) Feature
The Hibernation feature saves the contents of your notebook’s system memory to the hard drive as a part of the
Power/Suspend/Resume mode. You can enable or disable this feature.
Enable or Disable the Hibernation Feature
The default settings are not enabled. To enable or disable the Hibernation feature, follow these steps:
1
2
From the Modern Start screen, press [Windows]+[X]. Select Control Panel from the menu, then select Power
Options.
Select Choose what the power button does or Choose what closing the lid does, then make your selection (Do
Nothing, Sleep, Hibernate, or Shut Down).
46 - Power Management
Windows Power Management
The Power Options icon in the Control Panel allows you to configure some of the power management settings. For example, you can use Power Options to set the timeout values for turning off the display and hard disks whether you are running the notebook on battery or one of the adapters.
Restarting the System
If your system is on and you need to restart it, be sure that you use the following procedure.
1
2
From the Modern Start screen, open Charms ([Windows]+C) or mouse over [-] in the bottom right corner of the screen). Click [Settings]->[Power].
Select Restart from the list.
T
URNING OFF YOUR
LIFEBOOK
NOTEBOOK WITHOUT EXITING
W
INDOWS OR TURNING ON YOUR NOTEBOOK WITHIN
10
SECONDS OF THE NOTEBOOK
BEING SHUT OFF MAY CAUSE AN ERROR WHEN YOU START THE NEXT TIME
.
Powering Off
Before turning off the power, check that the hard drive/optical drive access indicator is off. If you turn off the power while accessing a disk there is a risk of data loss. To ensure that your notebook shuts down without error, use the
Windows shutdown procedure.
B
E SURE TO CLOSE ALL FILES AND EXIT ALL APPLICATIONS PRIOR TO TURNING OFF THE POWER
. I
F FILES ARE OPEN WHEN YOU TURN THE POWER OFF
,
YOU WILL LOSE ANY CHANGES THAT HAVE NOT BEEN SAVED
,
AND MAY CAUSE DISK ERRORS
.
Using the correct procedure to shut down from Windows allows your notebook to complete its operations and turn off power in the proper sequence to avoid errors. The proper sequence is:
From the Modern Start screen, open Charms ([Windows]+C) or mouse over [-] in the bottom right corner of the screen), click [Settings]->[Power]. Select Shut down from the list
47 - Power Management
ENERGY STAR® Compliance
Your Fujitsu system is an ENERGY STAR® qualified mobile PC. By choosing a computer with the latest energy-saving technology, you’re helping to preserve our environment for future generations.
ENERGY STAR is a joint program of the U.S. Environmental Protection Agency, U.S. Department of
Energy, Natural Resources Canada, and other governments around the world helping us save money while protecting the environment through energy efficient products and practices. With energy costs and global warming top-of-mind for consumers, Fujitsu is committed to offering solutions that help consumers conserve energy and improve the quality of our environment.
Sleep Mode:
If you are powering your system with a power adapter, you will notice that your computer is initially set so that the display turns off after 15 minutes of user inactivity, and the computer goes into Sleep mode after 20 minutes of user inactivity. If you are powering your system with the battery, your computer is initially set so that the display turns off after 10 minutes of user inactivity, and the computer goes into Sleep mode after 20 minutes of user inactivity. When going into Sleep mode, the computer also reduces the speed of any active Ethernet network links. To “wake” the computer from Sleep mode, press the Suspend/Resume Button.
Energy saving benefits:
Fujitsu ENERGY STAR qualified mobile PCs use about half as much electricity as standard equipment – saving half in utility costs. But more than that, ENERGY STAR also makes a difference for the environment. Did you know that the average house can be responsible for twice the greenhouse gas emissions as the average car? That’s because every time you flip on a light switch, run your dishwasher, or turn on your PC, you use energy, which means more greenhouse gas emissions from power plants. So the more energy we can save through energy efficiency, the more we help to reduce greenhouse gases and the risks of global warming.
To learn more about the important ENERGY STAR program, visit: www.energystar.gov.
To read about how Fujitsu is supporting Sustainable Management along with several other environmental activities, visit the Fujitsu Corporate Citizenship page at:
http://www.computers.us.fujitsu.com/www/content/aboutus/environmental/environment.php
48 - Power Management
advertisement
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project