What is acpi?
"In computing, the Advanced Configuration and Power Interface (ACPI) specification provides an open standard for device configuration and power management by the operating system." (Wikipedia)
What is acpid?
"ACPID is a completely flexible, totally extensible daemon for delivering ACPI events. It listens on a file (
/proc/acpi/event) and when an event occurs, executes programs to handle the event. The programs it executes are configured through a set of configuration files, which can be dropped into place by packages or by the admin." (acpid Sourceforge)
Preparing to install
Optional: Other ACPI features
Below are the locations and short descriptions of the function of different ACPI options in the kernel. In the majority of cases, you do not have to alter any of these to have a functional ACPI system.
- AC Adapter
- Processor Aggregator
- Thermal Zone
After configuring the kernel power management options, we are ready to install Package:ACPI Daemon. To install acpid, run the following command:
# emerge -av acpid
Adding to rc
After you have finished emerging acpid, you may want to add it to the list of rc services to be started with your system at boot.
# rc-update add acpid default
Then, run the following to start acpid: