Hi Nur, the actual error message is not shown in your output. I think you should run the flow graph in gdb with something like
gbd python gdb-prompt> run /home/user/gr-ieee802-11/examples/wifi_loopback.py once you hit the error gdb-prompt> bt Best, Bastian > On 06 Jul 2015, at 05:17, Nur Jalaudin <[email protected]> wrote: > > hi. I am newbie of gnuradio.i try run wifi_loopback.grc, all the port > are connected.but when i run it comes out with this messege below: > > > Generating: "/home/user/gr-ieee802-11/examples/wifi_loopback.py" >>>> Warning: This flow graph may not have flow control: no audio or RF hardware > blocks found. Add a Misc->Throttle block to your flow graph to avoid CPU > congestion. > > Executing: "/home/user/gr-ieee802-11/examples/wifi_loopback.py" > > linux; GNU C++ version 4.8.2; Boost_105400; > UHD_003.009.git-171-g51bc00ee > > Using Volk machine: avx_64_mmx_orc > OFDM MAPPER: encoding: 0 > set_min_output_buffer on block 31 to 96000 > set_min_output_buffer on block 33 to 96000 > set_min_output_buffer on block 35 to 96000 > set_min_output_buffer on block 36 to 96000 > set_min_output_buffer on block 39 to 96000 > set_min_output_buffer on block 50 to 96000 > >>>> Done (return code -11) > > > below is my system info: > user@userr-X455LDB:~$ python -V > Python 2.7.6 > user@userr-X455LDB:~$ gnuradio-config-info -v > 3.7.7.1 > user@userr-X455LDB:~$ uname -a > Linux userr-X455LDB 3.13.0-53-generic #89-Ubuntu SMP Wed May 20 10:34:39 > UTC 2015 x86_64 x86_64 x86_64 GNU/Linux > user@userr-X455LDB:~$ gcc --version > gcc (Ubuntu 4.8.2-19ubuntu1) 4.8.2 > Copyright (C) 2013 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. There is > NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR > PURPOSE. > > user@userr-X455LDB:~$ cat /etc/lsb-release > DISTRIB_ID=Ubuntu > DISTRIB_RELEASE=14.04 > DISTRIB_CODENAME=trusty > DISTRIB_DESCRIPTION="Ubuntu 14.04.2 LTS" > > -- > Posted via http://www.ruby-forum.com/. > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- Dipl.-Inform. Bastian Bloessl Distributed Embedded Systems Group University of Paderborn, Germany http://www.ccs-labs.org/~bloessl/ _______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
