> Best,
>
> Pan
>
>
>
> address@hidden:/usr/local/bin$ ./uhd_siggen
> linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.003-255-gc7054ce5
>
> -- Opening a USRP2/N-Series device...
> -- Current recv frame size: 1472 bytes
> -- Current send frame size: 1472 bytes
> -- Detecting internal GPSDO.... not found
>
> UHD Error:
> The daughterboard manager encountered a recoverable error in init.
> Loading the "unknown" daughterboard implementations to continue.
> The daughterboard cannot operate until this error is resolved.
> RuntimeError: fifo ctrl timed out looking for acks
>
> UHD Error:
> Control packet attempt 0, sequence number 318:
> RuntimeError: no control response, possible packet loss
>
> UHD Error:
> Control packet attempt 1, sequence number 319:
> RuntimeError: no control response, possible packet loss
>
> UHD Error:
> Control packet attempt 2, sequence number 320:
> RuntimeError: no control response, possible packet loss
>
> UHD Error:
> An unexpected exception was caught in a task loop.
> The task loop will now exit, things may not work.
> RuntimeError: link dead: timeout waiting for control packet ACK
>
> UHD Error:
> Control packet attempt 0, sequence number 321:
> RuntimeError: no control response, possible packet loss
>
> UHD Error:
> Control packet attempt 1, sequence number 322:
> RuntimeError: no control response, possible packet loss
>
> UHD Error:
> Control packet attempt 2, sequence number 323:
> RuntimeError: no control response, possible packet loss
> RuntimeError: fifo ctrl timed out looking for acks
> address@hidden:/usr/local/bin$ ./uhd_fft
> linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.003-255-gc7054ce5
>
> Traceback (most recent call last):
> File "./uhd_fft", line 337, in <module>
> main ()
> File "./uhd_fft", line 333, in main
> app = stdgui2.stdapp(app_top_block, "UHD FFT", nstatus=1)
> File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py",
> line 38, in __init__
> wx.App.__init__ (self, redirect=False)
> File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py",
> line 7981, in __init__
> self._BootstrapApp()
> File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py",
> line 7555, in _BootstrapApp
> return _core_.PyApp__BootstrapApp(*args, **kwargs)
> File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py",
> line 42, in OnInit
> self._max_noutput_items)
> File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py",
> line 64, in __init__
> self.panel = stdpanel (self, self, top_block_maker, max_nouts)
> File "/usr/local/lib/python2.7/dist-packages/gnuradio/wxgui/stdgui2.py",
> line 86, in __init__
> self.top_block = top_block_maker (frame, self, vbox, sys.argv)
> File "./uhd_fft", line 91, in __init__
> otw_format=options.wire_format, args=options.stream_args))
> File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py",
> line 116, in constructor_interceptor
> return old_constructor(*args)
> File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py",
> line 2834, in usrp_source
> return _uhd_swig.usrp_source(*args)
> RuntimeError: LookupError: KeyError: No devices found for ----->
> Empty Device Address
> address@hidden:/usr/local/bin$
>
>
>