Power Management; Suspend/Resume Button; Suspend Mode - Fujitsu LifeBook S-5582 User Manual

L i f e B o o k S S e r i e s – S e c t i o n T h r e e

Power Management

Your Fujitsu LifeBook notebook has many options and
features for conserving battery power. Some of these
features are automatic and need no user intervention,
such as those for the internal modem. However, others
depend on the parameters you set to best suit your oper-
ating conditions, such as those for the display bright-
ness. Internal power management for your notebook
may be controlled from settings made in your operating
system, pre-bundled power management application, or
from 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 Suspend 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.

SUSPEND/RESUME BUTTON

When your LifeBook notebook is active, the Suspend/
Resume button can be used to manually put your note-
book into Suspend mode. Push the Suspend/Resume
button when your notebook is active, but not actively
accessing anything, and immediately release the button.
You will hear two short beeps and your system will enter
Suspend mode. (See figure 2-5 on page 6 for location)
If your LifeBook is suspended, pushing the Suspend/
Resume button returns your notebook to active opera-
tion. You can tell whether the system is Suspended by
looking at the Power indicator. (See figure 2-5 on page 6)
If the indicator is visible and not flashing, your notebook
is fully operational. If the indicator is visible and
flashing, your notebook is in Suspend mode. If the indi-
cator is not visible, the power is off or your notebook is
in Hibernation mode. (See Hibernation Feature)

SUSPEND MODE

Suspend or Standby mode in Windows saves the
contents of your LifeBook notebook's system memory
during periods of inactivity by maintaining power to
critical parts. This mode will turn off the CPU, the
display, the hard drive, and all of the other internal
components except those necessary to maintain system
memory and allow for restarting. Your notebook can be
put in Suspend mode by:
Pressing the Suspend/Resume button when your
system is turned on.
Selecting Standby from the Windows Shut Down menu.
Timing out from lack of activity.
Allowing the battery to reach the Dead Battery
Warning condition.
32
Your notebook's system memory typically stores the file
on which you are working, open application informa-
tion, and any other data required to support operations
in progress. When you resume operation from Suspend
mode, your notebook will return to the point where it left
off. You must use the Suspend/Resume button to resume
operation, and there must be an adequate power source
available, or your notebook will not resume.
P O I N T S
If you are running your LifeBook notebook on battery
power, be aware that the battery continues to dis-
charge while your notebook is in Suspend mode,
though not as fast as when fully operational.
Disabling the Suspend/Resume button prevents it
from being used to put your LifeBook notebook in
Suspend or Hibernation (Save-to-Disk) mode. The
resume function of the button cannot be disabled.
The Suspend or Hibernation (Save-to-Disk) mode
should not be used with certain PC Cards. Check your
PC Card documentation for more information. When
PC Cards or external devices are in use, Hibernation
(Save-to-Disk) mode cannot return to the exact state
prior to suspension, because all of the peripheral
devices will be re-initialized when the system restarts.
If your LifeBook notebook is actively accessing infor-
mation when you enter the Suspend or Hibernation
(Save-to-Disk) mode, changes to open files are not
lost. The files are left open and memory is kept active
during Suspend mode or the memory is transferred to
the internal hard drive during Hibernation mode.
The main advantage of using the Hibernation (Save-
to-Disk) function is that power is not required to
maintain your data. This is particularly important if
you will be leaving your LifeBook notebook in a sus-
pended state for a prolonged period of time. The
drawback of using Hibernation mode is that it length-
ens the power down and power up sequences and
resets peripheral devices.
Windows 98 systems only: Hibernation (Save-to-
Disk) mode requires allocating a significant amount of
hard drive capacity for saving all system memory,
which reduces your usable disk space. When you pur-
chase your LifeBook notebook it will have space allo-
cated for the memory installed. If you upgrade the
original system by adding a memory upgrade module
without changing the size of your Save-to-Disk allo-
cation you will get an error message when you try to
activate Hibernation (Save-to-Disk) mode and it will
not work. In Windows 98 Second Edition, use the
PHDISK Utility to increase the size of the Save-to-Disk
file, SAVE2DSK.BIN. You can download the Save-to-
Disk File Allocation information from our Web site at
www.fujitsupc.com. I
f you need help, contact your
support representative.