Problem with USB passthrough (SmartCard reader)

Thanks for reporting this bug.

If you create a quantal vm and pass the device through to it, does that work?

What is the exact kvm command you are using?

Could you please show the results of:
   lsusb on the host
   lsusb -v in a quantal guest with the device passed through

Also add 'monitor stdio' to the kvm command line, then in the monitor type
   info usb
   info usbhost

I have started Quantal as a VM from the DVD-iso and following you find the results of the lsusb commands. Unfortunately, I cannot give you the kvm command because I am using virt-manager. But I am going to add its todays log entries as an attachment.

lsusb on the host:
Bus 001 Device 007: ID 0781:5566 SanDisk Corp.
Bus 002 Device 002: ID 04d9:1135 Holtek Semiconductor, Inc.
Bus 004 Device 002: ID 17ef:6009 Lenovo ThinkPad Keyboard with TrackPoint
Bus 005 Device 004: ID 076b:3021 OmniKey AG CardMan 3121
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

lsusb -v in the VM:
Bus 001 Device 004: ID 0409:55aa NEC Corp. Hub
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 1.10
  bDeviceClass 9 Hub
  bDeviceSubClass 0 Unused
  bDeviceProtocol 0 Full speed (or root) hub
  bMaxPacketSize0 8
  idVendor 0x0409 NEC Corp.
  idProduct 0x55aa Hub
  bcdDevice 1.01
  iManufacturer 1
  iProduct 2
  iSerial 3
  bNumConfigurations 1
  Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 25
    bNumInterfaces 1
    bConfigurationValue 1
    iConfiguration 0
    bmAttributes 0xe0
      Self Powered
      Remote Wakeup
    MaxPower 0mA
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 0
      bAlternateSetting 0
      bNumEndpoints 1
      bInterfaceClass 9 Hub
      bInterfaceSubClass 0 Unused
      bInterfaceProtocol 0 Full speed (or root) hub
      iInterface 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x81 EP 1 IN
        bmAttributes 3
          Transfer Type Interrupt
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0002 1x 2 bytes
        bInterval 255

Bus 001 Device 003: ID 076b:3021 OmniKey AG CardMan 3121
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 2.00
  bDeviceClass 0 (Defined at Interface level)
  bDeviceSubClass 0
  bDeviceProtocol 0
  bMaxPacketSize0 8
  idVendor 0x076b OmniKey AG
  idProduct 0x3021 CardMan 3121
  bcdDevice 3.02
  iManufacturer 1
  iProduct 2
  iSerial 0
  bNumConfigurations 1
  Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 93
    bNumInterfaces 1
    bConfigurationValue 1
    iConfiguration 3
    b...