Re: [Discuss-gnuradio] qt frequency sink runtime error

[Ruediger Bauernschmitt]

... I went to the build directory generated by the build-gnuradio script and uninstalled using "make uninstall". I then used apt-get uninstall gnuradio to remove the package installed with apt-get. As a final step I reinstalled with apt-get install. Unfortunately gnuradio-companion is now not starting at all anymore throwing a memory access error.

Best regards,

Ruedi

Am 10.08.2017 um 20:01 schrieb Kyeong Su Shin:

Dear Ruediger:

Could you try removing all GNU Radio installations except one (that you would use), reboot the system, and then re-build -> re-execute the code? Because I have seen a case where multiple installations of GNU Radio messed up the PATH variable and caused a similar issue..

Regards,

Kyeong Su Shin

On Thu, Aug 10, 2017 at 10:48 AM, Ruediger Bauernschmitt <address@hidden> wrote:

Dear Marcus and Kyeong Su Shin

indeed I used the build-gnuradio script before I installed gnuradio by apt-get. Sorry for not having mentioned that and in fact I did not deinstall after build-gnuradio.

Thank you,

Ruedi

Am 10.08.2017 um 19:27 schrieb Marcus Müller:

Hm, ok, I was hoping for some parser problems within GRC to produce errorneous configuration of your QT GUI Frequency sink, but nooope. Exactly, byte-wise, the same file as mine.

Soooo, there's something crashing in Qt GUI.

So, how did you get 3.7.11.1 on Ubuntu 14.04? you say apt-get, but Canonical's repos only carry 3.7.2 for 14.04; since this might really be a binary compatibility problem, this is my main focus.

Cheers,

Marcus

On 08/10/2017 05:54 PM, Ruediger Bauernschmitt wrote:

Hello,

I'm using gnuradio-companion 3.7.11.1 installed using apt-get on Ubuntu 14.04.5 LTS running on a Lenovo T60.

The dialtone example works fine but once I'm using the frequency sink like e.g. in the resampler_demo.grc I get the following Runtime Error:

Generating: '/tmp/resampler_demo.py'

Executing: /usr/bin/python2 -u /tmp/resampler_demo.py

Traceback (most recent call last):
  File "/tmp/resampler_demo.py", line 284, in <module>
    main()
  File "/tmp/resampler_demo.py", line 272, in main
    tb = top_block_cls()
  File "/tmp/resampler_demo.py", line 104, in __init__
    1 #number of inputs
  File "/usr/local/lib/python2.7/dist-packages/gnuradio/qtgui/qtgui_swig.py", line 1371, in make
    return _qtgui_swig.freq_sink_c_make(*args, **kwargs)
RuntimeError: std::exception

Any ideas?

Best wishes,

Ruedi


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