thinkpad（T42)热键支持和合盖待机的实现 （peterpannju发表，我稍微完善）

1.在/etc/X11/xorg.conf中加入DPMS

# ********************************************************************** Section "Monitor"     Identifier "Generic Monitor"     HorizSync 31.5 - 48.5     VertRefresh 50-70     Option    "DPMS" EndSection # ********************************************************************** Section "Device"     Identifier "** ATI Radeon (generic) [radeon]"     Driver "radeon"     Option "DPMS" "true"     Option "AGPSize" "32" # default:8 EndSection

2. rc.conf中启用相关的模块

ac button battery fan acpi_cpufreq cpufreq_ondemand thinkpad_acpi

注意别少了最后一个thinkpad_acpi。

2.5 实现自动降频：（第二步添加 acpi_cpufreq cpufreq_ondemand两个模块后）把一下加入/etc/rc.local

echo "ondemand" > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

3. 安装acpid,acpi。

$sudo pacman -S acpid acpi

4. 编辑/etc/modprobe.conf，添加

options ibm_acpi hotkey=enable,0xffff experimental=1

    来指定加载模块时的参数,hotkey=enable,0xffff指明使用尽可能多的快捷键,experimental=1打开一些在测试中的功能,如 控制cpu风扇等,启用hotkey功能后,Fn+F4组合键将不产生sleep的acpi的事件,而是ibm/hotkey事件。acpid这个东西干 什么呢？ThinkWiki介绍说：
    Basically, acpid just executes scripts residing in /etc/acpi/actions. Which script to launch at which event is configured in several files in /etc/acpi/events. All actions are documented in /var/log/acpid.

5.编辑/etc/acpi/文件夹 ，让文件结构如下所示（如果没有则自己创建）：
        | - apci
        | | - actions
        | | | - instWiFi.sh
        | | | - lcd_switch.sh
        | | | - sleep.sh
        | | - events
        | | | - anything
        | | - handler.sh

6.将acpi对ibm/hotkey事件的相应加入handler.sh：

ibm/hotkey)                   case "$2" in                         HKEY)                         case "$4" in                                 00001003) #echo "f3" >/dev/tty5                                         /etc/acpi/actions/lcd_switch.sh                                         ;;                                 00001004) #echo "f4" >/dev/tty5                                         /etc/acpi/actions/sleep.sh                                         ;;                                 00001005) #echo "f7" >/dev/tty5                                         /etc/acpi/actions/instWiFi.sh                                         ;;                                 00001007) #echo "f7" >/dev/tty5                                         echo video_switch > /proc/acpi/ibm/video                                         ;;                                 00001008) #echo "f8" >/dev/tty5                                         echo eject > /proc/acpi/ibm/bay                                         ;;                                 0000100c) #echo "f12" >/dev/tty5                                         /sbin/halt                                         ;;                         esac                         ;;                         *) logger "ibm_acpi undefined:$2";;                  esac                  ;;

7.编写actions文件夹下相对应的脚本如下：

lcd_switch.sh：

#!/bin/sh         flag=/tmp/thinkpad_lcd_off         if [ -e $flag ]; then             /usr/sbin/radeontool light on             rm -f $flag         else             /usr/sbin/radeontool light off >$flag         fi

instWiFi.sh

#!/bin/sh #echo Feel Freedom,using WiFi!         if lsmod |grep -q 'ipw2200'         then rmmod ipw2200 ieee80211 ieee80211_crypt;pkill dhcpcd         else modprobe ipw2200;iwconfig eth1 essid default key 7db579d6f3;dhcpcd eth1         fi

sleep.sh

#!/bin/sh         # if launched through a lid event and lid is open, do nothing         echo "$1" | grep "button/lid" && grep -q open /proc/acpi/button/lid/LID/state && exit 0         # remove USB 1.1 driver         rmmod uhci_hcd         # sync filesystem and clock         sync         /sbin/hwclock --systohc         # switch to console         FGCONSOLE=`fgconsole`         chvt 6         /usr/sbin/radeontool light off         # go to sleep         echo -n "mem" > /sys/power/state         # readjust the clock (it might be off a bit after suspend)         /sbin/hwclock --adjust         /sbin/hwclock --hctosys         # reload USB 1.1 driver         modprobe uhci_hcd         # turn on the backlight and switch back to X         radeontool light on         chvt $FGCONSOLE

    可以看出，我另添加了三个脚本：
    --lcd_switch.sh提供了关闭屏幕的功能（需要radeontool的支持）；
    --sleep.sh提供了休眠的功能，修改后的休眠脚本（需要radeontool的支持）；
    --instWiFi.sh提供了无线连接和断开的功能（需要首先配置好无线：安装wireless_tools和ipw2200-fw，并且编译内核时提供了无线支持）。
    记得chmod +x /etc/acpi/actions/*

8.安装radeontool， [url]http://www.thinkwiki.org/wiki/Radeontool[/url]
PKGBUILD:

pkgname=radeontool pkgver=1.5 pkgrel=2 pkgdesc= url="http://fdd.com/software/radeon/" license=GPL depends=('pciutils') arch=("i686" "x86_64") source=( http://fdd.com/software/radeon/$pkgname-$pkgver.tar.gz) md5sums=(8065eebe5a2b163e43b40461bfe49a56) build() {         cd $startdir/src/$pkgname-$pkgver         make || return 1         mkdir -p $startdir/pkg/usr/sbin         cp $pkgname $startdir/pkg/usr/sbin }

9.$/etc/rc.d/acpid restart，然后就可以看看各个热键是否起作用了。

10.IBM ThinkPad 合上屏幕休眠的设置：
---------------------------------------------
 
    IBM休眠的快捷方式有两个：
        1）. 按Fn+F4
        2）. 合上机盖
    分别在handler.sh上对应：
        1）.    ibm/hotkey HKEY 00000080 00001004
        2）.    ibm/hotkey HKEY 00000080 00005001  #ThinkPad对笔记本加上的热键，只有thinkpad会产生
              button/lid LID 00000080 00000007     #正常合上机盖所产生的信号，适合于所有的笔记本
    于是，对于情况2），我们在handler.sh中加入相应的处理方法：

...         button/lid)         #echo "LID switched!">/dev/tty5             /etc/acpi/actions/sleep.sh #添加这句             ;;         ...

    对于情况1），就是前面的步骤
           
11.原理：
--------------------------------------
 
    我们来看看acpid的工作原理：
  
    1）. 首先，我们按下某热键，此处我们举例Fn+F4 ；
  
    2）. acpid监听并截获这个按键组合，我们可以用acpi_listen命令来手动查看不同按键组合产生不同的信号：
        $ acpi_listen
        ibm/hotkey HKEY 00000080 00001004 #这是我的机器上Fn+F4产生的中断信号
  
    3）. acpid在/ect/acpi/events/下寻找对应的处理方案，我的该文件夹下面只有一个文件：
        $ cat anything
        event=.*
        action=/etc/acpi/handler.sh %e
    NOTE: 在这里，我偷了一个懒。我将所有的信号（前面acpi_listen所监听到的）一股脑儿抛给了handler.sh，然后在handler.sh里进行分析处理。其实，你可以创建自己的处理方案，比如，
        $ vim /etc/acpid/events/sleep
        event=ibm/hotkey HKEY 00000080 00001004  #ThinkPad Fn+F4产生的中断信号
        action=/etc/acpi/actions/sleep.sh  #遇到这个中断信号则执行该脚本
  
    4）. handler.sh接收到处理信号后，首先进行分析：
        set $*
            case "$1" in
                ibm/hotkey)
                    case "$2" in
                        HKEY)
                          case "$4" in
                             00001004) #echo "f4" >/dev/tty5，终于分析完Fn+F4信号了
                                        /etc/acpi/actions/sleep.sh  #激活相应事件处理程序
                                        ;;
        ...
        NOTE: 其实整个事件过程可以在上面第三步用NOTE中的方法代替。但是这样做的好处是将所有的处理方法都放到一起，便于编辑（就是喜欢ArchLinux的这种风格，在系统启动脚本/etc/rc.*上尤其明显）。
 
    5）. /etc/acpi/actions/sleep.sh被执行。
  
Links:
-------------------------------------------
 
    1. 笔记本上使用ArchLinux:
    [url]http://www.archlinux.org.cn/main/?q=node/76#sec-4[/url]
    2.  How to configure acpid:
    [url]http://www.thinkwiki.org/wiki/How_to_configure_acpid#Action_Script[/url]
    3. Radeontool:
    [url]http://www.thinkwiki.org/wiki/Randontool[/url]
    4. Debian GNU/Linux on IBM T41P
    [url]http://pthichat.net/index.php/2004/11/01/22-debian-gnulinux-on-ibm-t41p[/url]
    5. Debian + IBM-R40(迅驰)
    [url]http://www.linuxsir.org/bbs/showthread.php?t=238459[/url]

--------------
附上完整的/etc/acpi/handler.sh

#!/bin/sh # Default acpi script that takes an entry for all actions # NOTE: This is a 2.6-centric script. If you use 2.4.x, you'll have to # modify it to not use /sys minspeed=`cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq` maxspeed=`cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq` setspeed="/sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed" set $* case "$1" in     button/power)         #echo "PowerButton pressed!">/dev/tty5         case "$2" in             PWRF)    logger "PowerButton pressed: $2" ;;             *) logger "ACPI action undefined: $2" ;;         esac         ;;     button/sleep)         case "$2" in             SLPB) echo -n mem >/sys/power/state ;;             *) logger "ACPI action undefined: $2" ;;         esac         ;;     ac_adapter)         case "$2" in             AC)                 case "$4" in                     00000000)                         echo -n $minspeed >$setspeed                         #/etc/laptop-mode/laptop-mode start                     ;;                     00000001)                         echo -n $maxspeed >$setspeed                         #/etc/laptop-mode/laptop-mode stop                     ;;                 esac                 ;;             *) logger "ACPI action undefined: $2" ;;         esac         ;;     battery)         case "$2" in             BAT0)                 case "$4" in                     00000000)    #echo "offline" >/dev/tty5                     ;;                     00000001)    #echo "online" >/dev/tty5                     ;;                 esac                 ;;             CPU0)                     ;;             *) logger "ACPI action undefined: $2" ;;         esac         ;;     button/lid)         #echo "LID switched!">/dev/tty5         /etc/acpi/actions/sleep.sh         ;;          ibm/hotkey)                   case "$2" in                         HKEY)                         case "$4" in                                 00001003) #echo "f3" >/dev/tty5                                         /etc/acpi/actions/lcd_switch.sh                                         ;;                                 00001004) #echo "f4" >/dev/tty5                                         /etc/acpi/actions/sleep.sh                                         ;;                                 00001005) #echo "f7" >/dev/tty5                                         /etc/acpi/actions/instWiFi.sh                                         ;;                                 00001007) #echo "f7" >/dev/tty5                                         echo video_switch > /proc/acpi/ibm/video                                         ;;                                 00001008) #echo "f8" >/dev/tty5                                         echo eject > /proc/acpi/ibm/bay                                         ;;                                 0000100c) #echo "f12" >/dev/tty5                                         /sbin/halt                                         ;;                         esac                         ;;                         *) logger "ibm_acpi undefined:$2";;                  esac                  ;;     *)         logger "ACPI group/action undefined: $1 / $2"         ;; esac

----完----

peterpannju的原文请查看
[url]http://peterpannju.blogbus.com/logs/7173241.html[/url]