Comment 8 for bug 908917

FWIW, I have the same issue (timeout for each and every command nfcpy tries to send) with my ACR122U207.
I ran ccid-nfc.py and got the following output:

trying reader at usb port 001:015
Device: 015
  Device class: 0
  Device sub class: 0
  Device protocol: 0
  Max packet size: 8
  idVendor: 1839 (0x072f)
  idProduct: 8704 (0x2200)
  Device Version: 02.07
  Configuration: 1
    Total length: 93
    selfPowered: 0
    remoteWakeup: 0
    maxPower: 144
    Interface: 0
    Alternate Setting: 0
      Interface class: 11
      Interface sub class: 0
      Interface protocol: 0
      Endpoint: 0x81L
        Type: 3
        Max packet size: 8
        Interval: 2
      Endpoint: 0x2L
        Type: 2
        Max packet size: 64
        Interval: 0
      Endpoint: 0x82L
        Type: 2
        Max packet size: 64
        Interval: 0

I'll try to find some time to investigate that further, but Stephen what's the output you get with a ACR122U203 ?