原因調査

unix

ついでなのでudesc_dump。

su-2.05b# udesc_dump
Standard Device Descriptor:
  bLength            18
  bDescriptorType    01
  bcdUSB             0110
  bDeviceClass       ff
  bDeviceSubClass    00
  bDeviceProtocol    00
  bMaxPacketSize     8
  idVendor           0553
  idProduct          0201
  bcdDevice          0000
  iManufacturer      1
  iProduct           2
  iSerialNumber      0
  bNumConfigurations 1

Configuration 0:
        Standard Configuration Descriptor:
          bLength             9
          bDescriptorType     02
          wTotalLength        34
          bNumInterface       1
          bConfigurationValue 1
          iConfiguration      0
          bmAttributes        a0 (remote-wakeup)
          bMaxPower           35 (70 mA)

        Standard Interface Descriptor:
          bLength            9
          bDescriptorType    04
          bInterfaceNumber   0
          bAlternateSetting  0
          bNumEndpoints      0
          bInterfaceClass    ff
          bInterfaceSubClass 00
          bInterfaceProtocol 00
          iInterface         0

        Standard Interface Descriptor:
          bLength            9
          bDescriptorType    04
          bInterfaceNumber   0
          bAlternateSetting  1
          bNumEndpoints      1
          bInterfaceClass    ff
(中略)
String (index 1): VLSI Vision Ltd

String (index 2): USB Camera

まぁ、細かいところはさておき。
bInterfaceClass ff
…うーみゅ。
君か?君が原因なのか?