在ThinkPad T23上使用Slackware Linux

--配置 ACPID和ThinkPad功能键

Author: Cowyn Li

简介

一般地，acpid从/etc/acpi/events/目录下读取内容并执行/etc/acpi/actions/下面的脚本，并把所有 执行的动作记录在/var/log/acpid文件里。

前提条件

在内核里启用了ACPI电源管理支持。

  [*] ACPI Support
  [*] Sleep States
  <*> AC Adapter
  <*> Battery
  <*> Button
  <*> Video
  <*> Generic Hotkey (EXPERIMENTAL)
  <*> Fan
  <*> Dock
  <*> Processor
  <*> Thermal Zone
  <M> IBM ThinkPad Laptop Extras 
        

可以直接修改.config文件的以下部分：

  #
  # Power management options (ACPI, APM)
  #
  CONFIG_PM=y
  # CONFIG_PM_LEGACY is not set
  # CONFIG_PM_DEBUG is not set
  # CONFIG_PM_SYSFS_DEPRECATED is not set
  # CONFIG_SOFTWARE_SUSPEND is not set
  #
  # ACPI (Advanced Configuration and Power Interface) Support
  #
  CONFIG_ACPI=y
  CONFIG_ACPI_SLEEP=y
  CONFIG_ACPI_SLEEP_PROC_FS=y
  # CONFIG_ACPI_SLEEP_PROC_SLEEP is not set
  CONFIG_ACPI_AC=y
  CONFIG_ACPI_BATTERY=y
  CONFIG_ACPI_BUTTON=y
  CONFIG_ACPI_VIDEO=y
  CONFIG_ACPI_HOTKEY=y
  CONFIG_ACPI_FAN=y
  CONFIG_ACPI_DOCK=y
  CONFIG_ACPI_PROCESSOR=y
  CONFIG_ACPI_THERMAL=y
  # CONFIG_ACPI_ASUS is not set
  CONFIG_ACPI_IBM=m
  # CONFIG_ACPI_TOSHIBA is not set
  CONFIG_ACPI_BLACKLIST_YEAR=0
  # CONFIG_ACPI_DEBUG is not set
  CONFIG_ACPI_EC=y
  CONFIG_ACPI_POWER=y
  CONFIG_ACPI_SYSTEM=y
  CONFIG_X86_PM_TIMER=y
  # CONFIG_ACPI_CONTAINER is not set
        

上面的<M> IBM ThinkPad Laptop Extras（CONFIG_ACPI_IBM=m）即ibm-acpi，从kernel 2.6.10 之后集成到内核里。如果你的kernel比较老，可以去<http://ibm-acpi.sourceforge.net/>看看。

如果修改了.config文件，重新编译一次内核。

如果IBM ThinkPad Laptop Extras编译成了模块的形式，需要在开机的时候加载他，这里有一个脚本 /etc/rc.d/rc.ibm-apci供参考：

  #!/bin/sh
  # ibm-acpi - Support special ACPI events on IBM Thinkpads
  # $Id: ibm-acpi.init,v 1.3 2004/10/14 10:42:38 dws Exp $
  case "$1" in
  start|reload|restart|force-reload)
  ;;
  stop)
  exit
  ;;
  *)
  exit
  ;;
  esac

  # load the module
  /sbin/modprobe ibm_acpi
  # successful?
  [ -d /proc/acpi/ibm ] || exit
  echo enable,0xffff >/proc/acpi/ibm/hotkey
        

然后可以把rc.ibm-apci放到rc.local里面。当然别忘了/etc/rc.d/rc.acpid为可执行。还需要ACPID package，slackcware 11.0 最新的是acpid-1.0.4-i486-2，这个包一般系统里都装上了。

几个例子

• FN+F3 关闭LCD

  执行该动作需要对screen有执行控制权限，执行xhost +local:root，可以把root换成你的用户名。 还需要在 /etc/X11/XF86Config 或者 /etc/X11/xorg.conf 配置文件里的Monitor部分加上

    Option "DPMS"。
              

    $ cat /etc/acpi/events/f3
    event=ibm/hotkey HKEY 00000080 00001003
    action=/etc/acpi/actions/f3.sh %e
              

    $ cat /etc/acpi/actions/f3.sh
    #!/bin/bash
    # default display on current host
    DISPLAY=:0.0
    # find out if DPMS is enabled
    STATUS=`/usr/X11R6/bin/xset -display $DISPLAY -q | grep -e 'DPMS is'`
    # enable DPMS if disabled
    if [ "$STATUS" == " DPMS is Disabled" ]
    then
    echo "Enabling DPMS ..."
    /usr/X11R6/bin/xset -display $DISPLAY +dpms
    fi
    # find out if the monitor is on
    STATUS=`/usr/X11R6/bin/xset -display $DISPLAY -q | grep 'Monitor'`
  
    if [ "$STATUS" == " Monitor is On" ]
    then
    echo "[`date`] Turning display OFF"
    /usr/X11R6/bin/xset -display $DISPLAY dpms force off
    else
    echo "[`date`] Turning display ON"
    /usr/X11R6/bin/xset -display $DISPLAY dpms force on # turn monitor on
    /usr/X11R6/bin/xset -display $DISPLAY s activate # un-blank monitor
    fi
    exit 0
              

• FN+F4 待机

    $ cat /etc/acpi/events/f4
    event=ibm/hotkey HKEY 00000080 00001004
    action=/etc/acpi/actions/f4.sh %e
            

    $ cat /etc/acpi/actions/f4.sh
    #!/bin/bash
    FGCONSOLE=`fgconsole`
    chvt 8
    sync
    hwclock --systohc
    echo -n "mem" > /sys/power/state
    hwclock --hctosys
    vbetool post
    if [ "$FGCONSOLE" -ge "7" ] ; then
    chvt $FGCONSOLE
    else
    chvt 7
    chvt $FGCONSOLE
    fi
            

• POWER 键关机

    $ cat /etc/acpi/events/power
    event=button/power PWRF 00000080 xxxxxxxx
    action=/etc/acpi/actions/power.sh %e
            

    $ cat /etc/acpi/actions/power.sh
    #!/bin/sh
    # power down the system
    /sbin/halt -p
            

参考文档

• http://www.thinkwiki.org/wiki/APM_vs._ACPI
• http://www.thinkwiki.org/wiki/How_to_get_special_keys_to_work
• http://www.thinkwiki.org/wiki/Problem_with_display_remaining_black_after_resume