Sorry for the late reply here, but 1 more thing to check: is the device getting consistent power? We’ve noticed that if the voltage is too low or the connector
is loose, the radio can be thrown into a state that produces those errors.
From: discuss-gnuradio-bounces+address@hidden [mailto:discuss-gnuradio-bounces+address@hidden
On Behalf Of Ben Hilburn
Sent: Monday, October 15, 2012 3:11 PM
To: address@hidden
Cc: address@hidden
Subject: Re: [Discuss-gnuradio] Very weird about my N210 board.
Also, are you using Network Manager on your PC? If so, have you told it to ignore the ethernet interface? If not, NM will try to re-negotiate DHCP on that interface over and over, bringing down your link every time.
Ben
On Mon, Oct 15, 2012 at 9:40 AM, Josh Blum <address@hidden> wrote:
On 10/15/2012 09:36 AM, Pan wrote:
> Hi,
>
> Sorry for bothering you guys. I encountered some very weird thing about my
> N210 board.
>
> When the board is powered up, it seems very thing works well. Actually, I
> can even ping this board. However, if I run any applications in the
> applications，such as uhd_fft， uhd/siggen in the /usr/local/bin folder, the
> terminal shows there are many errors as following. After that, this board
> reset again and again for several minutes. It is very weird! Is there
> anyone can tell me what happened with my N210 board. Any suggestion or hint
> will be very appreciated. Thank you so much.
>
Looks like the ethernet link is dying on you. Could be an issue w/ the
driver for your ethernet card. Can you try a different ethernet or PC
and see if the problem follows?
> 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$
>
>
>
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