Tomcat i7221 S5150
Chapter 3: BIOS Setup
3-22
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contents of the registers of the processor from RAM and force all the peripherals to
be relinked.
•
S1 & S3 - In this method, the BIOS depends on the OS to select either S1 or S3.
Run VGABIOS if S3 Resume
Selects whether to run the VGA BIOS if resumed from S3 state. This is only necessary for
older VGA drivers. Select Auto, if in doubt.
Auto
/ Yes / No
Note
This option is enabled only if S3 or S1 & S3 is selected from the ACPI
Suspend Type option.
Power Management
This function allows you to set the default parameters of power-saving modes. Set this to User
Define to choose your own parameters. The following table shows the parameters for
Maximum Saving and Minimum Saving options for the various modes:
Mode
Doze
Standby
Suspend
HDD Power Down
Min Saving
1 hour
1 hour
1 hour
15 min
Max Saving
1 min
1 min
1 min
1 min
Min Saving
/ Max Saving / User Define
Video Off Method
This option defines the method used to power off video. The various methods are as follows.
•
Blank Screen: The system BIOS will only send a blank screen when disabling video.
•
H SYNC + Blank: In addition to Blank screen, the BIOS will also turn off the V-SYNC
& H-SYNC signals from VGA cards to monitor.
•
DPMS:
Select this option if your monitor supports the Display Power Management
Signaling (DPMS) standard of the Video Electronics Standards Association VESA).
Use the software supplied for your video subsystem to select video power
management values.
Note
Green monitors detect the V/H SYNC signals to turn off their electron
guns. It is important to realize that the CRT consumes the most power
(several hundred watts) of any system. To really save energy, you must
shut it down when not in use.
Green monitors (also known as Energy Star monitors) reduce power usage by 90% without
actually turning off the CRT. To make a green monitor function properly you MUST use Video
Off Method = V/H Sync, because this tells the Green Monitor to shut down. If you incorrectly
use the "Blank Screen" setting then you will just get a blank screen that still consumes 100%
power. If you have a screensaver running, then you will not have CPU inactivity, and the
standard BIOS options will not shut the CRT down ever. So, turn OFF your screensaver in the
WINDOWS control panel, not in the BIOS.
Video Off in Suspend
This option defines the time frame in which the video will be disabled under current power
management settings. The settings are:
•
No: System BIOS will never turn off the screen.
•
Yes:
System BIOS turns of the screen when system is in SUSPEND mode.
