Udev not loading the right driver for usbtmc device

Question

I have a usb beam profiler  and I'm trying to get it to work on arch linux. It works using NI-VISA, so I should be able to communicate with it using usbtmc. However, when I plug it in, it does not show up in /dev.
I think the problem is that udev is not loading the tmc interface driver when I plug it in.
Here's a snippet of the output from lsusb -v:
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 4
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
I believe that bInterface* should look something like:
bInterfaceClass 254 Application Specific Interface
bInterfaceSubClass 3 Test and Measurement
bInterfaceProtocol 1 TMC
iInterface 5 TMC488
Is there a way to force udev to load the right interface? Or is the problem that I'm missing something from my kernel?

Answer 1

Could you post the entire output of lsusb -v for the device?
Bus 001 Device 013: ID 1313:8019 ThorLabs
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1313 ThorLabs
idProduct 0x8019
bcdDevice 0.00
iManufacturer 1
iProduct 2
iSerial 3
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 46
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 4
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x88 EP 8 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
What device node name are you expecting?
Not sure, but probably /dev/usbtmc0
Is there a chance that it is being instantiated as a HID device?  Does /dev/usbhid0 appear?
Nope, don't have a /dev/usbhid0
What does the journal say when the device has been attached?
I'm not sure what you mean, but dmesg says:
[ 6095.219400] usb 1-1.2: new high-speed USB device number 14 using ehci-pci
and udevadm monitor says:
KERNEL[6098.321484] add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2 (usb)
KERNEL[6098.321887] add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0 (usb)
UDEV [6098.324333] add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2 (usb)
UDEV [6098.325356] add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.2/1-1.2:1.0 (usb)