How does ACPI handle power management during system shutdown?
When the operating system initiates a shutdown, ACPI coordinates the process of powering off or transitioning the system to a low-power state.
ACPI sends signals to devices and components to prepare for shutdown. It may also notify the operating system to save any unsaved data and perform necessary cleanup tasks.
ACPI can initiate a variety of power states during shutdown, depending on system configuration and user settings. For example, it may enter an S5 (soft-off) state, where the system is completely powered off, or it may enter a sleep state (e.g., S1, S3) if configured to do so.
ACPI ensures that all necessary operations are completed before cutting off power to the system, preventing data loss or corruption.
In summary, ACPI is responsible for managing power states throughout the boot and shutdown processes, working in conjunction with the BIOS/UEFI firmware and the operating system to optimize power usage and ensure smooth transitions between states.
Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: How does ACPI handle power management during system shutdown? ### Response: When the operating system initiates a shutdown, ACPI coordinates the process of powering off or transitioning the system to a low-power state.
ACPI sends signals to devices and components to prepare for shutdown. It may also notify the operating system to save any unsaved data and perform necessary cleanup tasks.
ACPI can initiate a variety of power states during shutdown, depending on system configuration and user settings. For example, it may enter an S5 (soft-off) state, where the system is completely powered off, or it may enter a sleep state (e.g., S1, S3) if configured to do so.
ACPI ensures that all necessary operations are completed before cutting off power to the system, preventing data loss or corruption.
In summary, ACPI is responsible for managing power states throughout the boot and shutdown processes, working in conjunction with the BIOS/UEFI firmware and the operating system to optimize power usage and ensure smooth transitions between states. 