[Discuss-gnuradio] RuntimeError: Unable to find USRP #0

[teka yemane]

Hello guys,
I have already installed the gnuradio on Ubuntu 8.10 (interpid) and the dial_tone.py is working fine. Then, I was trying to test the usrp_wfm_rcv.py with my USRP which takes input from 10.7M scanner but I came to the following error:

address@hidden:~/Desktop/gnuradio-3.1.3/gnuradio-examples/python/usrp$ ./usrp_wfm_rcv.py -f 10.7M
Traceback (most recent call last):
  File "./usrp_wfm_rcv.py", line 290, in <module>
    app = stdgui2.stdapp (wfm_rx_block, "USRP WFM RX")
  File "/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py", line 36, in __init__
    wx.App.__init__ (self, redirect=False)
  File "/usr/lib/python2.5/site-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7912, in __init__
    self._BootstrapApp()
  File "/usr/lib/python2.5/site-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7487, in _BootstrapApp
    return _core_.PyApp__BootstrapApp(*args, **kwargs)
  File "/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py", line 39, in OnInit
    frame = stdframe (self.top_block_maker, self.title, self._nstatus)
  File "/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py", line 60, in __init__
    self.panel = stdpanel (self, self, top_block_maker)
  File "/usr/local/lib/python2.5/site-packages/gnuradio/wxgui/stdgui2.py", line 81, in __init__
    self.top_block = top_block_maker (frame, self, vbox, sys.argv)
  File "./usrp_wfm_rcv.py", line 79, in __init__
    self.u = usrp.source_c()                    # usrp is data source
  File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp.py", line 247, in __init__
    _ensure_rev2(which)
  File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp.py", line 85, in _ensure_rev2
    v = _look_for_usrp(which)
  File "/usr/local/lib/python2.5/site-packages/gnuradio/usrp.py", line 79, in _look_for_usrp
    raise RuntimeError, "Unable to find USRP #%d" % (which,)
RuntimeError: Unable to find USRP #0

Any help is appreciated!
Teka