ACPI/zh-cn
ACPI(Advanced Configuration 和 Power Management Interface)是power management 系统是 BIOS 的一部分。
安装
内核
ACPI 需要开启下列内核选项:
Power management and ACPI options ---> [*] Power Management support [*] ACPI (Advanced Configuration and Power Interface) Support --->
Option | Module | Recommend | Description |
---|---|---|---|
Deprecated /proc/acpi files | - | No | Creates deprecated files in the procfs filesystem, which are now replaced by files in the sysfs filesystem. |
Deprecated power /proc/acpi directories | - | No | Creates deprecated files in the procfs filesystem, which are now replaced by files in the sysfs filesystem. |
EC read/write access through /sys/kernel/debug/ec | ec-debugfs | No | Debug interface to the Embedded Controller. |
Deprecated /proc/acpi/event support | - | No | Creates deprecated files in the procfs filesystem, which are now replaced by the input layer or netlink events. |
AC Adapter | ac | Laptops | Creates files to tell, if your system is connected to AC. |
Battery | battery | Laptops | Creates files to tell, if your system is powered by a battery. |
Button | button | - | Handles events on the power, sleep, and lid buttons. |
Video | video | - | Supports basic operations for graphics adapters. |
Fan | fan | - | Supports ACPI fan devices, allowing user-mode applications to perform basic fan control (on, off, status). |
Dock | dock | - | Supports ACPI-controlled docking stations and removable drive bays, see the acpi dock article. |
Processor | processor | - | Installs ACPI as the idle handler for Linux and uses ACPI C2 and C3 processor states to save power. |
Processor Aggregator | processor-aggregator | - | ACPI 4.0 function to perform specific processor configuration and control. |
Thermal Zone | thermal | Yes | Supports ACPI thermal zones to protect your processor against overheating. |
NUMA support | - | - | |
Debug Statements | - | No | |
PCI slot detection driver | pci-slot | No | Helps to correlate PCI bus addresses with physical slots |
Container and Module Devices | container | - | Supports ACPI Container and Module devices to hotplug nodes, CPUs, and memory. |
Smart Battery System | sbs, sbshc | - | Supports another type of access to battery information, found on some laptops. |
Hardware Error Device | hed | - | Supports the Hardware Error Device, which is used to report some hardware errors. |
Allow ACPI methods to be inserted/replaced at run time | custom-method | No | |
ACPI Platform Error Interface (APEI) | - | - | APEI allows to report errors (for example from the chipset) to the operating system. |
Emerge
桌面环境对 ACPI 生成的常见事件做出反应。如果未安装桌面环境但想让系统对特殊事件做出反应,则可以安装 ACPI 包。安装 sys-power/acpid 包:
root #
emerge --ask sys-power/acpid
USE 标记
Several packages know about the global acpi
USE flag. There are no use flags available for sys-power/acpid at this time.
SELinux
为了让 acpid 能够关闭 SELinux 系统,请确保安装了 sec-policy/selinux-shutdown 包并且重新标记了 /sbin/shutdown 可执行文件:
root #
emerge --ask sec-policy/selinux-shutdown
配置
/etc/acpi 中的脚本定义了系统如何对 ACPI 事件做出反应。它们可以根据需要进行编辑以满足用户的要求。
服务
OpenRC
现在可以启动 acpid 服务。使用 OpenRC 时运行:
root #
/etc/init.d/acpid start
要在系统启动时运行 acpid 服务,请将其添加到默认运行级别:
root #
rc-update add acpid default
systemd
如果 systemd 被用作 init system,使用以下命令在系统启动时开启 acpid 服务:
root #
systemctl enable acpid.service
现在启动服务:
root #
systemctl start acpid.service
进阶示例
The default ACPI setup may be satisfactory for some users, however a little extra configuration may be required to get the acpid daemon to treat some basic ACPI events properly (AC power plug in/out, multimedia keys, etc.).
Modifications can be make to /etc/acpi/default.sh along with /etc/acpi/events/default if necessary. Why not create a complicated setup that makes use of the /etc/acpi/actions and /etc/acpi/events capabilities? Simply put scripts and event files in those locations for advanced usage.
对于大多数用户来说一个基本的 default.sh 文件可能就足够了,但是下面是一个使用 default.sh “可以”完成的示例:
/etc/acpi/default.sh
#!/bin/sh # # $Header: /etc/acpi/default.sh Exp $ # $Author: (c) 2012-2014 -tclover <tokiclover@dotfiles.> Exp $ # $License: MIT (or 2-clause/new/simplified BSD) Exp $ # $Version: 2014/12/24 21:09:26 Exp $ # log() { logger -p daemon "ACPI: $*"; } uhd() { log "event unhandled: $*"; } set $* group=${1%/*} action=${1#*/} device=$2 id=$3 value=$4 [ -d /dev/snd ] && alsa=true || alsa=false [ -d /dev/oss ] && oss=true || oss=false amixer="amixer -q set Master" ossmix="ossmix -- vmix0-outvol" case $group in ac_adapter) case $value in *0) log "switching to power.bat power profile" hprofile power.bat;; *1) log "switching to power.adp power profile" hprofile power.adp;; *) uhd $*;; esac ;; battery) case $value in *0) log "switching to power.adp power profile" hprofile power.adp;; *1) log "switching to power.adp power profile" hprofile power.adp;; *) uhd $*;; esac ;; button) case $action in lid) case "$id" in close) hibernate-ram;; open) :;; *) uhd $*;; esac ;; power) shutdown -H now;; sleep) hibernate-ram;; mute) $alsa && $amixer toggle;; volumeup) $alsa && $amixer 3dB+ $oss && $ossmix +3;; volumedown) $alsa && $amixer 3dB- $oss && $ossmix -3;; *) uhd $*;; esac ;; cd) case $action in play) :;; stop) :;; prev) :;; next) :;; *) uhd $*;; esac ;; jack) case $id in *plug) :;; *) uhd $*;; esac ;; video) case $action in displayoff) :;; *) uhd $*;; esac ;; *) uhd $*;; esac unset alsa oss amixer ossmix group action device id # vim:fenc=utf-8:ft=sh:ci:pi:sts=4:sw=4:ts=4:
另请参阅
- ACPI/ThinkPad-special-buttons — describes how to configure ACPI events and actions for the Lenovo ThinkPad T410 laptop.
- Suspend and hibernate — describes how to suspend or hibernate a Gentoo system.