Hi,
I am trying to run benchmark_rx.py and the first time I execute it after booting up the PC, I encounter the error pasted at the end of this message. The error goes away when I try to run benchmark_rx again, but comes back again after rebooting and executing bechmark_rx.
Some information about the PC
~$ uname -a
Linux ubuntu 3.5.0-23-generic #35~precise1-Ubuntu SMP Fri Jan 25 17:13:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.3 LTS
Release: 12.04
Codename: precise
~$ gnuradio-config-info -v
v3.7.0-104-g6bf21a5a
Thanks,
Kapil
Error Message:
~$ /usr/local/share/gnuradio/examples/digital/narrowband/benchmark_rx.py -m dbpsk -r 500000 -f 0.6e9 -a addr=192.168.10.2 --spec=A:0 -A TX/RX --rx-gain=20 -v -S 2
linux; GNU C++ version 4.6.3; Boost_104800; UHD_003.005.001-0-gf3a16983
Using Volk machine: avx_64_mmx
Demodulator:
bits per symbol: 1
RRC roll-off factor: 0.35
FLL bandwidth: 6.28e-02
Timing bandwidth: 6.28e-02
Phase bandwidth: 6.28e-02
-- Opening a USRP2/N-Series device...
-- Current recv frame size: 1472 bytes
-- Current send frame size: 756 bytes
UHD Error:
Control packet attempt 0, sequence number 1:
RuntimeError: no control response, possible packet loss
UHD Error:
Control packet attempt 1, sequence number 2:
RuntimeError: no control response, possible packet loss
UHD Error:
Control packet attempt 2, sequence number 3:
RuntimeError: no control response, possible packet loss
Traceback (most recent call last):
File "/usr/local/share/gnuradio/examples/digital/narrowband/benchmark_rx.py", line 141, in <module>
main()
File "/usr/local/share/gnuradio/examples/digital/narrowband/benchmark_rx.py", line 130, in main
tb = my_top_block(demods[options.modulation], rx_callback, options)
File "/usr/local/share/gnuradio/examples/digital/narrowband/benchmark_rx.py", line 57, in __init__
options.verbose)
File "/usr/local/share/gnuradio/examples/digital/narrowband/uhd_interface.py", line 190, in __init__
freq, gain, spec, antenna)
File "/usr/local/share/gnuradio/examples/digital/narrowband/uhd_interface.py", line 52, in __init__
self.u = uhd.usrp_source(device_addr=args, stream_args=uhd.stream_args('fc32'))
File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", line 121, in constructor_interceptor
return old_constructor(*args)
File "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", line 1699, in make
return _uhd_swig.usrp_source_make(*args)
RuntimeError: RuntimeError: link dead: timeout waiting for control packet ACK
Thanks,
Kapil