Udev
udev - 連接無線滑鼠時自動禁用觸控板
我始終將加密狗放在筆記型電腦中，用於無線滑鼠，並希望使用 udev 執行一個腳本，在滑鼠實際打開時禁用我的觸控板。我已經編寫了規則和腳本，但似乎無法讓它們發揮作用。
以下是 OFF/ON 的 UDEV 動作
離開
UDEV [404.700104] change /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:046D:C52B.0003/0003:046D:4060.0004/power_supply ACTION=change DEVPATH=/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:046D:C52B.0003/0003:046D:4060.0004/power_supply/hidpp_battery_0 POWER_SUPPLY_CAPACITY_LEVEL=Unknown POWER_SUPPLY_MANUFACTURER=Logitech POWER_SUPPLY_MODEL_NAME=Wireless Mouse MX Master POWER_SUPPLY_NAME=hidpp_battery_0 POWER_SUPPLY_ONLINE=0 POWER_SUPPLY_SCOPE=Device POWER_SUPPLY_SERIAL_NUMBER=4060-fb-d9-a0-50 POWER_SUPPLY_STATUS=Unknown SEQNUM=3540 SUBSYSTEM=power_supply USEC_INITIALIZED=404691556在
UDEV [406.390053] change /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:046D:C52B.0003/0003:046D:4060.0004/power_supply ACTION=change DEVPATH=/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:046D:C52B.0003/0003:046D:4060.0004/power_supply/hidpp_battery_0 POWER_SUPPLY_CAPACITY_LEVEL=Normal POWER_SUPPLY_MANUFACTURER=Logitech POWER_SUPPLY_MODEL_NAME=Wireless Mouse MX Master POWER_SUPPLY_NAME=hidpp_battery_0 POWER_SUPPLY_ONLINE=1 POWER_SUPPLY_SCOPE=Device POWER_SUPPLY_SERIAL_NUMBER=4060-fb-d9-a0-50 POWER_SUPPLY_STATUS=Discharging SEQNUM=3541 SUBSYSTEM=power_supply USEC_INITIALIZED=406373747我的規則
ACTION=="change", ATTR{serial_number}=="4060-fb-d9-a0-50", RUN+="/home/sly/bin/mouse-plug.sh $attr{online}"mouse-plug.sh
#!/bin/sh TOUCHPADDEVICE=$(($(xinput list | grep -i touchpad | cut -d= -f2 | cut -d[ -f1)+0)) if [ $1 -eq 1 ]; then xinput disable $TOUCHPADDEVICE else xinput enable $TOUCHPADDEVICE fi設備的udev資訊
$ udevadm info -a -p /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:046D:C52B.0003/0003:046D:4060.0004/power_supply/hidpp_battery_0 Udevadm info starts with the device specified by the devpath and then walks up the chain of parent devices. It prints for every device found, all possible attributes in the udev rules key format. A rule to match, can be composed by the attributes of the device and the attributes from one single parent device. looking at device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:046D:C52B.0003/0003:046D:4060.0004/power_supply/hidpp_battery_0': KERNEL=="hidpp_battery_0" SUBSYSTEM=="power_supply" DRIVER=="" ATTR{capacity_level}=="Normal" ATTR{manufacturer}=="Logitech" ATTR{model_name}=="Wireless Mouse MX Master" ATTR{online}=="1" ATTR{scope}=="Device" ATTR{serial_number}=="4060-fb-d9-a0-50" ATTR{status}=="Discharging" ATTR{type}=="Battery" looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:046D:C52B.0003/0003:046D:4060.0004': KERNELS=="0003:046D:4060.0004" SUBSYSTEMS=="hid" DRIVERS=="logitech-hidpp-device" ATTRS{country}=="00" looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:046D:C52B.0003': KERNELS=="0003:046D:C52B.0003" SUBSYSTEMS=="hid" DRIVERS=="logitech-djreceiver" ATTRS{country}=="00" looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2': KERNELS=="1-2:1.2" SUBSYSTEMS=="usb" DRIVERS=="usbhid" ATTRS{authorized}=="1" ATTRS{bAlternateSetting}==" 0" ATTRS{bInterfaceClass}=="03" ATTRS{bInterfaceNumber}=="02" ATTRS{bInterfaceProtocol}=="00" ATTRS{bInterfaceSubClass}=="00" ATTRS{bNumEndpoints}=="01" ATTRS{supports_autosuspend}=="1" looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1/1-2': KERNELS=="1-2" SUBSYSTEMS=="usb" DRIVERS=="usb" ATTRS{authorized}=="1" ATTRS{avoid_reset_quirk}=="0" ATTRS{bConfigurationValue}=="1" ATTRS{bDeviceClass}=="00" ATTRS{bDeviceProtocol}=="00" ATTRS{bDeviceSubClass}=="00" ATTRS{bMaxPacketSize0}=="8" ATTRS{bMaxPower}=="98mA" ATTRS{bNumConfigurations}=="1" ATTRS{bNumInterfaces}==" 3" ATTRS{bcdDevice}=="1207" ATTRS{bmAttributes}=="a0" ATTRS{busnum}=="1" ATTRS{configuration}=="RQR12.07_B0029" ATTRS{devnum}=="2" ATTRS{devpath}=="2" ATTRS{devspec}==" (null)" ATTRS{idProduct}=="c52b" ATTRS{idVendor}=="046d" ATTRS{ltm_capable}=="no" ATTRS{manufacturer}=="Logitech" ATTRS{maxchild}=="0" ATTRS{product}=="USB Receiver" ATTRS{quirks}=="0x0" ATTRS{removable}=="removable" ATTRS{rx_lanes}=="1" ATTRS{speed}=="12" ATTRS{tx_lanes}=="1" ATTRS{urbnum}=="69831" ATTRS{version}==" 2.00" looking at parent device '/devices/pci0000:00/0000:00:14.0/usb1': KERNELS=="usb1" SUBSYSTEMS=="usb" DRIVERS=="usb" ATTRS{authorized}=="1" ATTRS{authorized_default}=="1" ATTRS{avoid_reset_quirk}=="0" ATTRS{bConfigurationValue}=="1" ATTRS{bDeviceClass}=="09" ATTRS{bDeviceProtocol}=="01" ATTRS{bDeviceSubClass}=="00" ATTRS{bMaxPacketSize0}=="64" ATTRS{bMaxPower}=="0mA" ATTRS{bNumConfigurations}=="1" ATTRS{bNumInterfaces}==" 1" ATTRS{bcdDevice}=="0418" ATTRS{bmAttributes}=="e0" ATTRS{busnum}=="1" ATTRS{configuration}=="" ATTRS{devnum}=="1" ATTRS{devpath}=="0" ATTRS{devspec}==" (null)" ATTRS{idProduct}=="0002" ATTRS{idVendor}=="1d6b" ATTRS{interface_authorized_default}=="1" ATTRS{ltm_capable}=="no" ATTRS{manufacturer}=="Linux 4.18.5-arch1-1-ARCH xhci-hcd" ATTRS{maxchild}=="16" ATTRS{product}=="xHCI Host Controller" ATTRS{quirks}=="0x0" ATTRS{removable}=="unknown" ATTRS{rx_lanes}=="1" ATTRS{serial}=="0000:00:14.0" ATTRS{speed}=="480" ATTRS{tx_lanes}=="1" ATTRS{urbnum}=="279" ATTRS{version}==" 2.00" looking at parent device '/devices/pci0000:00/0000:00:14.0': KERNELS=="0000:00:14.0" SUBSYSTEMS=="pci" DRIVERS=="xhci_hcd" ATTRS{ari_enabled}=="0" ATTRS{broken_parity_status}=="0" ATTRS{class}=="0x0c0330" ATTRS{consistent_dma_mask_bits}=="64" ATTRS{d3cold_allowed}=="1" ATTRS{device}=="0xa12f" ATTRS{devspec}=="" ATTRS{dma_mask_bits}=="64" ATTRS{driver_override}=="(null)" ATTRS{enable}=="1" ATTRS{irq}=="128" ATTRS{local_cpulist}=="0-7" ATTRS{local_cpus}=="ff" ATTRS{msi_bus}=="1" ATTRS{numa_node}=="-1" ATTRS{revision}=="0x31" ATTRS{subsystem_device}=="0x07be" ATTRS{subsystem_vendor}=="0x1028" ATTRS{vendor}=="0x8086" looking at parent device '/devices/pci0000:00': KERNELS=="pci0000:00" SUBSYSTEMS=="" DRIVERS==""mouse-plug.sh 會按預期啟用和禁用觸摸板，但不會在 UDEV 事件時觸發。
mouse-plug 需要修改為
#!/bin/sh export DISPLAY=:0 export XAUTHORITY="/home/sly/.Xauthority" TOUCHPADDEVICE=$(($(xinput list | grep -i touchpad | cut -d= -f2 | cut -d[ -f1)+0)) if [ $1 -eq 1 ]; then xinput disable $TOUCHPADDEVICE else xinput enable $TOUCHPADDEVICE fi這可以通過傳遞使用者名並通過 udev 動態顯示來改善，但對於單使用者筆記型電腦，它可以像這樣正常工作。