acpid-2.0.32
Introduction to acpid
The acpid (Advanced Configuration
and Power Interface event daemon) is a completely flexible, totally
extensible daemon for delivering ACPI events. It listens on netlink
interface 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 user.
This package is known to build and work properly using an LFS-10.1
platform.
Package Information
User Notes: http://wiki.linuxfromscratch.org/blfs/wiki/acpid
Installation of acpid
Install acpid by running the
following commands:
./configure --prefix=/usr \
--docdir=/usr/share/doc/acpid-2.0.32 &&
make
This package does not come with a test suite.
Now, as the root user:
make install &&
install -v -m755 -d /etc/acpi/events &&
cp -r samples /usr/share/doc/acpid-2.0.32
Configuring acpid
acpid is configured by user
defined events. Place event files under /etc/acpi/events directory. If an event occurs,
acpid recurses
through the event files in order to see if the regex defined after
"event" matches. If they do, action is executed.
The following brief example will suspend the system when the laptop
lid is closed (it requires pm-utils-1.4.1):
cat > /etc/acpi/events/lid << "EOF"
event=button/lid
action=/etc/acpi/lid.sh
EOF
cat > /etc/acpi/lid.sh << "EOF"
#!/bin/sh
/bin/grep -q open /proc/acpi/button/lid/LID/state && exit 0
/usr/sbin/pm-suspend
EOF
chmod +x /etc/acpi/lid.sh
Unfortunately, not every computer labels ACPI events in the same
way. To determine how your buttons are recognized, use the
acpi_listen tool.
Also, look in the samples directory
under /usr/share/doc/acpid-2.0.32 for
more examples.
Boot Script
To automatically start acpid when the system is
rebooted, install the /etc/rc.d/init.d/acpid boot script from the
blfs-bootscripts-20210110 package.
make install-acpid
Contents
Installed Programs:
acpid, acpi_listen, and kacpimon
Installed Libraries:
None
Installed Directories:
/etc/acpi and
/usr/share/doc/acpid-2.0.32
Short Descriptions
|
acpid
|
is a program that listens for ACPI events and executes
the rules that match the received event
|
|
acpi_listen
|
is a simple tool which connects to acpid and listens for
events
|
|
kacpimon
|
is a monitor program that connects to three sources of
ACPI events (events file, netlink and input layer) and
then reports on what it sees while it is connected
|
Last updated on 2021-02-20 13:35:58 -0600