Hi!
I have a couple of questions about USB.
I recently bought a new USB keyboard, a Logitech K120. When attaching
this to a FreeBSD system, however, it is detected as a hid device
(attaching to uhid) rather than a keyboard (attaching to ukbd). The
keyboard works fine, but I'm just curious as to why it doesn't use ukbd.
The output from usbconfig for this keyboard is:
ugen2.3: <USB Keyboard Logitech> at usbus2, cfg=0 md=HOST spd=LOW
(1.5Mbps) pwr=ON
bLength = 0x0012
bDescriptorType = 0x0001
bcdUSB = 0x0110
bDeviceClass = 0x0000
bDeviceSubClass = 0x0000
bDeviceProtocol = 0x0000
bMaxPacketSize0 = 0x0008
idVendor = 0x046d
idProduct = 0xc31c
bcdDevice = 0x6400
iManufacturer = 0x0001 <Logitech>
iProduct = 0x0002 <USB Keyboard>
iSerialNumber = 0x0000 <no string>
bNumConfigurations = 0x0001
If I add the qurik UQ_HID_IGNORE, it attaches with ukbd and works fine.
I don't know if this is appropriate to add to the general quriks though.
I have another keyboard, also Logitech, but older. This one attaches to
ukbd, but the manufacture string says LITEON. Is this string fetched
from the device, or is it somehow stored in the usb drivers?
The output from usbconfig for this keyboard is:
ugen4.2: <USB Multimedia Keyboard LITEON Technology> at usbus4, cfg=0
md=HOST spd=LOW (1.5Mbps) pwr=ON
bLength = 0x0012
bDescriptorType = 0x0001
bcdUSB = 0x0110
bDeviceClass = 0x0000
bDeviceSubClass = 0x0000
bDeviceProtocol = 0x0000
bMaxPacketSize0 = 0x0008
idVendor = 0x046d
idProduct = 0xc312
bcdDevice = 0x0101
iManufacturer = 0x0001 <LITEON Technology>
iProduct = 0x0002 <USB Multimedia Keyboard>
iSerialNumber = 0x0000 <no string>
bNumConfigurations = 0x0001
These issues probably have natural explanations, but it's making me
slightly confused, so I hope someone can shed some light on them.
Regards!
--
Niclas
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