Power Management and Applications

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Power Management and Applications [Copy link]

ACPI is a more advanced and effective power management mode than APM. Using ACPI mode can save more power. What does this mean? The temperature of the CPUs that are "overclocked" by enthusiasts will be very low in "Suspend" mode, about 4 to 5 degrees lower than in APM mode. Of course, ACPI mode, like other power management methods, must also be supported by the corresponding operating system and hardware environment. Windows 98 and its subsequent products and Windows 2000 all provide comprehensive support for ACPI. For hardware, the situation is a little more complicated: mainly the motherboard, graphics card and network card must support ACPI management mode. There should be no problem with the hardware you purchased recently. For specific situations, you can refer to the manual of the hardware you purchased. After talking so much, how should you implement the ACPI function on your computer?

　　Enable ACPI

　　We use the implementation of ACPI under Windows 98 operating system as an example. If Windows 98 is not installed on your machine, you only need to use the "SETUP/PJ" command during installation. If you have already installed Windows 98, you need to enter the "Device Manager". In "System Devices", there is an option called "Advanced Power Management ". Double-click this option and select "Upgrade Driver → Show All Devices". You can then see the "Advance Configuration And Power Interface (ACPI)" option. Select this option and follow the system prompts to complete the setup step by step. The system will then prompt you to restart. After the restart, Windows 98 will prompt that new hardware has been found, and then continue to follow the system prompts to complete the setup step by step.

　　Since ACPI is a new power management mode, you may encounter some problems during use, such as

　　Computer sleeps forever

　　This is mainly because the hardware does not support ACPI well. At this time, you should first read the instructions of the motherboard and other hardware to see if they fully support ACPI. You can also try to turn off the "PowerManger" function of the motherboard in the BIOS and let Windows 98 take over the power management completely . Sometimes, when the BIOS is set to use the USWC?UncacheableSpeculativeWriteCombining? mode of the graphics card, such a situation will occur. If you change it back to the UC?Uncacheable? mode, there will be no problem.

　　STD failure

　　Some appliances can use "Suspend To Disk" (STD is the hibernation to hard disk function. After saving the current system status to the hard disk, the hard disk stops rotating and the system enters a low power consumption state. When the system is turned on again, the system will skip the self-check and directly restore the original system status from the hard disk instead of the default status of the normal system, thereby shortening the boot time.) Some computers cannot implement this function, which is usually related to the partition format of the hard disk. Usually, there will be no problem using the FAT16 partition format. In fact, the STD function is implemented by software and has nothing to do with hardware. The problem with the FAT32 format is due to software compatibility issues. Sometimes refreshing the motherboard BIOS can solve the problem.

　　In actual operation, various problems will arise. As long as we start from the operating system, combine BIOS settings, and carefully accumulate experience, we can truly achieve environmentally friendly and energy-saving power management .