Advanced Power Management
lastmod 2021-02-04created 2021-02-042 edits
Advanced Power Management (APM) is an API developed by Intel and Microsoft that enables an operating system running on an IBM-compatible PC to work with the BIOS (part of the computer's firmware) to perform power management. It was designed for laptop computers running on battery power. It can adjust the speed of computer components by reporting power requirements.
ACPI succeeds APM. Microsoft has been dropping support for APM starting with Windows Vista.
apmd
Power management daemon.