[Discuss-gnuradio] wbx - usrp_benchmark_usb.py failed at testing 4MB/sec

[Kyle Zhou]

In order to use WBX, I install git repo on my ubuntu 9.04. 
When I do usrp_benchmark_usb.py, it goes well with 2MB test, but failed at 4MB showing device busy error.
The output is attached below. I tried other daughter boards (RF2400), no problem. So I guess it is related to the WBX.

Testing 2MB/sec... usb_throughput = 2M
ntotal    = 1000000
nright    = 999156
runlength = 999156
delta     = 844
OK
Testing 4MB/sec... usrp_open_interface:usb_claim_interface: failed interface 1
could not claim interface 1: Device or resource busy
usrp_basic_tx: can't open tx interface
Traceback (most recent call last):
  File "./usrp_benchmark_usb.py", line 106, in <module>
    main ()
  File "./usrp_benchmark_usb.py", line 96, in main
    ok = run_test (rate, verbose)
  File "./usrp_benchmark_usb.py", line 63, in run_test
    usrp_tx = usrp.sink_s (0, tx_interp)
  File "/usr/local/lib/python2.6/dist-packages/gnuradio/usrp/usrp_swig.py", line 2741, in sink_s
    return _usrp_swig.sink_s(*args, **kwargs)
RuntimeError: can't open usrp