Triggering udev rule for particular keyboard

Question

I need to write a udev rule for a particular keyboard which does not seem to have any unique attribute against which to match.

The lines below are the output of udevadm monitor upon insertion of the device. Is there something here I could use to uniquely identify this keyboard?

KERNEL[58443.215701] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2 (usb)
KERNEL[58443.218536] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0 (usb)
KERNEL[58443.218662] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/0003:04B3:3025.0005 (hid)
KERNEL[58443.221610] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/input/input15 (input)
KERNEL[58443.221669] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/input/input15/event4 (input)
KERNEL[58443.221868] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/0003:04B3:3025.0005/hidraw/hidraw0 
UDEV  [58443.236718] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2 (usb)                                       
UDEV  [58443.238026] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0 (usb)
UDEV  [58443.239532] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/0003:04B3:3025.0005 (hid)
UDEV  [58443.240670] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/0003:04B3:3025.0005/hidraw/hidraw0 
UDEV  [58443.288767] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/input/input15 (input)             
UDEV  [58443.319799] add      /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0/input/input15/event4 (input)

Edit:

Below are the lines from plugging the keyboard into a different usb port. As far as I can tell, it seems that there is no information that remains constant.

KERNEL[59428.187673] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1 (usb)
KERNEL[59428.190323] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0 (usb)
KERNEL[59428.190494] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:04B3:3025.0006 (hid)
KERNEL[59428.193088] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/input/input16 (input)
KERNEL[59428.193266] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/input/input16/event4 (input)
KERNEL[59428.193426] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:04B3:3025.0006/hidraw/hidraw0 
UDEV  [59428.300690] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1 (usb)                                       
UDEV  [59428.301790] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0 (usb)
UDEV  [59428.302553] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:04B3:3025.0006 (hid)
UDEV  [59428.303130] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/0003:04B3:3025.0006/hidraw/hidraw0 
UDEV  [59428.319082] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/input/input16 (input)             
UDEV  [59428.321444] add      /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/input/input16/event4 (input)

Edit: Using lsusb -v, I was able to find the idVendor and idProduct.

Bus 002 Device 009: ID 04b3:3025 IBM Corp. 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x04b3 IBM Corp.
  idProduct          0x3025 
  bcdDevice            1.09
  iManufacturer           1 LITE-ON Technology
  iProduct                2 USB NetVista Full Width Keyboard.
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           34
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 HID Keyboard
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower               70mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      1 Boot Interface Subclass
      bInterfaceProtocol      1 Keyboard
      iInterface              5 EP1 Interrupt
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      65
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              24
Device Status:     0x0000
  (Bus Powered)

So I have created the following udev rule:

SUBSYSTEM=="usb", ATTR{idVendor}=="0x04b3", ATTRS{idProduct}=="0x3025", RUN+="/home/myuser/bin/udev_jap.sh"

However, nothing is triggered so far. And strangely, the idVendor and idProduct information doesn't show up on udevadm monitor. Does this mean udev can't match against these attributes?

Answer 1

This is an old question, anyway:

• You have to remove 0x hexadecimal prefix.
• Note that ATTR and ATTRS are different, but for your case both should work.

• Your script udev_jap.sh should start with shebang #!/bin/sh or run shell itself:

   RUN+="/bin/sh /home/myuser/bin/udev_jap.sh"
  

Try this:

SUBSYSTEM=="usb", ATTR{idVendor}=="04b3", ATTR{idProduct}=="3025", RUN+="/home/myuser/bin/udev_jap.sh"