FM receiver exampel won't work

I have a new installed Ubuntu 18.04.1
followed the steps in:

and then I try to run the example FM receive.
enter serial no, and pres play.
The following error message comes up:

Generating: ‘/home/alita/LimeSDR Tester/’

Generating: ‘/home/alita/LimeSDR Tester/’

Executing: /usr/bin/python -u /home/alita/LimeSDR Tester/

Traceback (most recent call last):
File “/home/alita/LimeSDR Tester/”, line 232, in
File “/home/alita/LimeSDR Tester/”, line 226, in main
tb = top_block_cls()
File “/home/alita/LimeSDR Tester/”, line 138, in init
File “/usr/lib/python2.7/dist-packages/gnuradio/wxgui/”, line 92, in init
File “/usr/lib/python2.7/dist-packages/gnuradio/fft/”, line 65, in init
fft = self._fft_block[0](fft_size, True, fft_window)
File “/usr/lib/python2.7/dist-packages/gnuradio/fft/”, line 154, in make
return _fft_swig.fft_vcc_make(fft_size, forward, window, shift, nthreads)
RuntimeError: std::exception


someone who knows what it might be for wrong? grateful for help :slight_smile:

best regards
//Tobias /SA5CHW

if i run sudo gnuradio-companion in terminal it works.


Did you install from source? If so you need to install the udev rules:

Yes i did.
I can’t run any SDR (lime & RTL V3) if I don’t run the program as sudo gnuradio-companion in the terminal.
Is there a risk of running gnuradio as sudo? Otherwise i can live by starting the program in terminal.