我正在一台笔记本电脑上运行Ubuntu 9.10（Karmic Koala），希望根据我的USB键盘是否连接（连接时开启NumLock，未连接时关闭NumLock）自动切换NumLock。
为了实现这一点，我首先安装了“numlockx”软件包。
为了钩入设备系统，我想使用udev。我已经查看了StackOverflow上的其他问题并阅读了"编写udev规则"。但是我无法让udev规则起作用。
首先，这里是
为了实现这一点，我首先安装了“numlockx”软件包。
numlockx on 和 numlockx off 都可以正常工作。为了钩入设备系统，我想使用udev。我已经查看了StackOverflow上的其他问题并阅读了"编写udev规则"。但是我无法让udev规则起作用。
首先，这里是
dmesg输出的示例：
[20906.985102] usb 3-2: 使用uhci_hcd和地址6的新低速USB设备 [20907.166403] usb 3-2: 已选择配置#1中的1个 [20907.192904] 输入：Microsoft Natural® Ergonomic Keyboard 4000，路径为/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.0/input/input20 [20907.193100] microsoft 0003:045E:00DB.000B: 输入、hidraw1: USB HID v1.11 键盘[Microsoft Natural® Ergonomic Keyboard 4000]，位于usb-0000:00:1a.0-2/input0上 [20907.217810] 输入：Microsoft Natural® Ergonomic Keyboard 4000，路径为/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input21 [20907.217979] microsoft 0003:045E:00DB.000C: 输入、hidraw2: USB HID v1.11 设备[Microsoft Natural® Ergonomic Keyboard 4000]，位于usb-0000:00:1a.0-2/input1上
我使用udevadm info收集设备信息：
> udevadm info -a -p /devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input21
查看设备 '/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input21': KERNEL=="input21" SUBSYSTEM=="input" DRIVER=="" ATTR{phys}=="usb-0000:00:1a.0-2/input1" ATTR{uniq}=="" ATTR{modalias}=="input:b0003v045Ep00DBe0111-e0,1,2,3,4,14,k71,72,73,74,75,77,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,8B,8C,8E,90,96,98,9B,9C,9E,9F,A1,A3,A4,A5,A6,A7,A8,A9,AB,AC,AD,AE,B0,B1,B2,B3,B4,B5,B6,B8,B9,BA,BB,BC,BD,BE,BF,C0,C1,C2,CE,CF,D0,D1,D2,D5,D9,DB,DF,E2,E7,E8,E9,EA,EB,F0,100,162,166,16A,16E,178,179,17A,17B,17C,17D,17F,180,181,182,185,18C,18D,192,193,195,1A0,1A1,1A2,1A3,1A4,1A5,1A6,1A7,1A8,1A9,1AA,1AB,1AC,1AD,1AE,1B0,1B1,1B7,r6,a20,m4,lsfw"
查看父设备 '/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1': KERNELS=="3-2:1.1" SUBSYSTEMS=="usb" DRIVERS=="usbhid" ATTRS{bInterfaceNumber}=="01" ATTRS{bAlternateSetting}==" 0" ATTRS{bNumEndpoints}=="01" ATTRS{bInterfaceClass}=="03" ATTRS{bInterfaceSubClass}=="00" ATTRS{bInterfaceProtocol}=="00" ATTRS{modalias}=="usb:v045Ep00DBd0173dc00dsc00dp00ic03isc00ip00" ATTRS{supports_autosuspend}=="1"
查看父设备 '/devices/pci0000:00/0000:00:1a.0/usb3/3-2': KERNELS=="3-2" SUBSYSTEMS=="usb" DRIVERS=="usb" ATTRS{configuration}=="" ATTRS{bNumInterfaces}==" 2" ATTRS{bConfigurationValue}=="1" ATTRS{bmAttributes}=="a0" ATTRS{bMaxPower}=="100mA" ATTRS{urbnum}=="532" ATTRS{idVendor}=="045e" ATTRS{idProduct}=="00db" ATTRS{bcdDevice}=="0173" ATTRS{bDeviceClass}=="00" ATTRS{bDeviceSubClass}=="00" ATTRS{bDeviceProtocol}=="00" ATTRS{bNumConfigurations}=="1" ATTRS{bMaxPacketSize0}=="8" ATTRS{speed}=="1.5" ATTRS{busnum}=="3" ATTRS{devnum}=="6" ATTRS{version}==" 2.00" ATTRS{maxchild}=="0" ATTRS{quirks}=="0x0" ATTRS{authorized}=="1" ATTRS{manufacturer}=="Microsoft"
查看父设备 '/devices/pci0000:00/0000:00:1a.0/usb3': KERNELS=="usb3" SUBSYSTEMS=="usb" DRIVERS=="usb" ATTRS{configuration}=="" ATTRS{bNumInterfaces}=="
我创建了一个名为/etc/udev/rules.d/usb-keyboard.rules的文件：# 当键盘插入时打开NumLock。 ACTION=="add", ATTRS{manufacturer}=="Microsoft", SUBSYSTEM=="input", RUN+="/usr/bin/numlockx on"我使用
# 当键盘拔出时关闭NumLock。 ACTION=="remove", ATTRS{manufacturer}=="Microsoft", SUBSYSTEM=="input", RUN+="/usr/bin/numlockx off"udevadm test验证规则是否正确：> udevadm test --action=add /devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input21 run_command: calling: test udevadm_test: version 147
[...] parse_file: 将'/etc/udev/rules.d/usb-keyboard.rules'作为规则文件读取 udev_rules_new: 规则使用180864字节标记(15072 * 12字节)，31614字节缓冲区 udev_rules_new: 临时索引使用49760字节(2488 * 20字节) udev_device_new_from_syspath: 设备0x28d7d80的devpath为'/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input21' udev_rules_apply_to_event: 运行'/sbin/modprobe -b $env{MODALIAS}' /lib/udev/rules.d/80-drivers.rules:5 udev_rules_apply_to_event: 运行'socket:@/org/freedesktop/hal/udev_event' /lib/udev/rules.d/90-hal.rules:2 udev_device_new_from_syspath: 设备0x28d8560的devpath为'/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1' udev_device_new_from_syspath: 设备0x28d8708的devpath为'/devices/pci0000:00/0000:00:1a.0/usb3/3-2' udev_rules_apply_to_event: 运行'/usr/bin/numlockx on' /etc/udev/rules.d/usb-keyboard.rules:7 udevadm_test: UDEV_LOG=6 udevadm_test: DEVPATH=/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input21 udevadm_test: PRODUCT=3/45e/db/111 udevadm_test: NAME="Microsoft Natural® Ergonomic Keyboard 4000" udevadm_test: PHYS="usb-0000:00:1a.0-2/input1" udevadm_test: UNIQ="" udevadm_test: EV==10001f udevadm_test: KEY==837fff 2c3027 bf004444 0 0 1 10f84 8a27c007 ff7f7bfa d9415fff febeffdf ffefffff ffffffff fffffffe udevadm_test: REL==40 udevadm_test: ABS==1 0 udevadm_test: MSC==10 udevadm_test: MODALIAS=input:b0003v045Ep00DBe0111-e0,1,2,3,4,14,k71,72,73,74,75,77,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,8B,8C,8E,90,96,98,9B,9C,9E,9F,A1,A3,A4,A5,A6,A7,A8,A9,AB,AC,AD,AE,B0,B1,B2,B3,B4,B5,B6,B8,B9,BA,BB,BC,BD,BE,BF,C0,C1,C2,CE,CF,D0,D1,D2,D5,D9,DB,DF,E2,E7,E8,E9,EA,EB,F0,100,162,166,16A,16E,178,179,17A,17B,17C,17D,17F,180,181,182,185,18C,18D,192,193,195,1A0,1A1,1A2,1A3,1A4,1A5,1A6,1A7,1A8,1A9,1AA,1AB,1AC,1AD,1AE,1B0,1B1,1B7,r6,a20,m4,lsfw udevadm_test: ACTION=add udevadm_test: SUBSYSTEM=input udevadm_test: 运行:'/sbin/modprobe -b input:b0003v045Ep00DBe0111-e0,1,2,3,4,14,k71,这是“删除”测试：
> udevadm test --action=remove /devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input21问题在于当键盘插上或拔出时，NumLock状态不会改变。我尝试重新启动udev服务，但没有成功。我的udev规则有问题吗？我的做法是错的吗？
运行命令：test udevadm_test版本147
[...] 解析文件：将'/etc/udev/rules.d/usb-keyboard.rules'读取为规则文件 udev_rules_new：规则使用180864字节的标记(15072 * 12字节)，31614字节的缓冲区 udev_rules_new：临时索引使用了49760字节(2488 * 20字节) udev_device_new_from_syspath：设备0xd2fd80具有devpath '/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input21' udev_rules_apply_to_event：运行'socket:@/org/freedesktop/hal/udev_event' /lib/udev/rules.d/90-hal.rules:2 udev_device_new_from_syspath：设备0xd2fff8具有devpath '/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1' udev_device_new_from_syspath：设备0xd30690具有devpath '/devices/pci0000:00/0000:00:1a.0/usb3/3-2' udev_rules_apply_to_event：运行'/usr/bin/numlockx off' /etc/udev/rules.d/usb-keyboard.rules:10 udevadm_test：UDEV_LOG=6 udevadm_test：DEVPATH=/devices/pci0000:00/0000:00:1a.0/usb3/3-2/3-2:1.1/input/input21 udevadm_test：PRODUCT=3/45e/db/111 udevadm_test：NAME="Microsoft Natural® Ergonomic Keyboard 4000" udevadm_test：PHYS="usb-0000:00:1a.0-2/input1" udevadm_test：UNIQ="" udevadm_test：EV==10001f udevadm_test：KEY==837fff 2c3027 bf004444 0 0 1 10f84 8a27c007 ff7f7bfa d9415fff febeffdf ffefffff ffffffff fffffffe udevadm_test：REL==40 udevadm_test：ABS==1 0 udevadm_test：MSC==10 udevadm_test：MODALIAS=input:b0003v045Ep00DBe0111-e0,1,2,3,4,14,k71,72,73,74,75,77,79,7A,7B,7C,7D,7E,7F,80,81,82,83,84,85,86,87,88,89,8A,8B,8C,8E,90,96,98,9B,9C,9E,9F,A1,A3,A4,A5,A6,A7,A8,A9,AB,AC,AD,AE,B0,B1,B2,B3,B4,B5,B6,B8,B9,BA,BB,BC,BD,BE,BF,C0,C1,C2,CE,CF,D0,D1,D2,D5,D9,DB,DF,E2,E7,E8,E9,EA,EB,F0,100,162,166,16A,16E,178,179,17A,17B,17C,17D,17F,180,181,182,185,18C,18D,192,193,195,1A0,1A1,1A2,1A3,1A4,1A5,1A6,1A7,1A8,1A9,1AA,1AB,1AC,1AD,1AE,1B0,1B1,1B7,r6,a20,m4,lsfw udevadm_test：ACTION=remove udevadm_test：SUBSYSTEM=input udevadm_test：运行'socket:@/org/freedesktop/hal/udev_event' udevadm_test：运行'/usr/bin/numlockx off'