I fixed the error by deleting /etc/ld.so.cache:

$ sudo rm /etc/ld.so.cache
$ sudo ldconfig

I'm quoting the output of the commands you sent me. The output is the same
before and after deleting the cache. So they don't point at the source of
the issue.

$ gnuradio-config-info --enabled-components
python-support;testing-support;volk;doxygen;sphinx;
gnuradio-runtime;gr-ctrlport;gr-blocks;gnuradio-companion;
gr-fec;gr-fft;gr-filter;gr-analog;gr-digital;gr-dtv;gr-atsc;gr-audio;*
alsa;* oss;gr-comedi;gr-channels;gr-noaa;gr-pager;gr-qtgui;gr-
trellis;gr-uhd;gr-utils;gr-video-sdl;gr-vocoder;gr-fcd;
gr-wavelet;gr-wxgui;gr-zeromq

$ apt list --installed | grep gnuradio

WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.

$ ls -ld /usr/bin/python
lrwxrwxrwx 1 root root 9 Dec 13 22:39 /usr/bin/python -> python2.7

vk@alonzo:~/src/poanetwork/hbbft$ sudo ldconfig -v | grep gnuradio
ldconfig: Can't stat /usr/lib/digilent/adept: No such file or directory
ldconfig: Can't stat /usr/local/lib/i386-linux-gnu: No such file or
directory
ldconfig: Can't stat /usr/local/lib/i686-linux-gnu: No such file or
directory
ldconfig: Can't stat /lib/i686-linux-gnu: No such file or directory
ldconfig: Can't stat /usr/lib/i686-linux-gnu: No such file or directory
ldconfig: Can't stat /usr/local/lib/x86_64-linux-gnu: No such file or
directory
ldconfig: Path `/lib/x86_64-linux-gnu' given more than once
ldconfig: Path `/usr/lib/x86_64-linux-gnu' given more than once
ldconfig: /lib/i386-linux-gnu/ld-2.27.so is the dynamic linker, ignoring

libgnuradio-iio.so.0 -> libgnuradio-iio.so.0.2
libgnuradio-vocoder-3.7.11.1.so.0.0.0 -> libgnuradio-vocoder.so
libgnuradio-channels-3.7.11.1.so.0.0.0 -> libgnuradio-channels.so
libgnuradio-fcd-3.7.11.1.so.0.0.0 -> libgnuradio-fcd.so
libgnuradio-uhd-3.7.11.1.so.0.0.0 -> libgnuradio-uhd.so
libgnuradio-blocks-3.7.11.1.so.0.0.0 -> libgnuradio-blocks.so
libgnuradio-digital-3.7.11.1.so.0.0.0 -> libgnuradio-digital.so
libgnuradio-trellis-3.7.11.1.so.0.0.0 -> libgnuradio-trellis.so
libgnuradio-audio-3.7.11.1.so.0.0.0 -> libgnuradio-audio.so
libgnuradio-wavelet-3.7.11.1.so.0.0.0 -> libgnuradio-wavelet.so
libgnuradio-atsc-3.7.11.1.so.0.0.0 -> libgnuradio-atsc.so
libgnuradio-pager-3.7.11.1.so.0.0.0 -> libgnuradio-pager.so
libgnuradio-fec-3.7.11.1.so.0.0.0 -> libgnuradio-fec.so
libgnuradio-runtime-3.7.11.1.so.0.0.0 -> libgnuradio-runtime.so
libgnuradio-zeromq-3.7.11.1.so.0.0.0 -> libgnuradio-zeromq.so
libgnuradio-analog-3.7.11.1.so.0.0.0 -> libgnuradio-analog.so
libgnuradio-qtgui-3.7.11.1.so.0.0.0 -> libgnuradio-qtgui.so
libgnuradio-comedi-3.7.11.1.so.0.0.0 -> libgnuradio-comedi.so
libgnuradio-pmt-3.7.11.1.so.0.0.0 -> libgnuradio-pmt.so
libgnuradio-fft-3.7.11.1.so.0.0.0 -> libgnuradio-fft.so
libgnuradio-filter-3.7.11.1.so.0.0.0 -> libgnuradio-filter.so
libgnuradio-noaa-3.7.11.1.so.0.0.0 -> libgnuradio-noaa.so
libgnuradio-dtv-3.7.11.1.so.0.0.0 -> libgnuradio-dtv.so
libgnuradio-video-sdl-3.7.11.1.so.0.0.0 -> libgnuradio-video-sdl.so
libgnuradio-wxgui-3.7.11.1.so.0.0.0 -> libgnuradio-wxgui.so
ldconfig: /lib/x86_64-linux-gnu/ld-2.27.so is the dynamic linker, ignoring

ldconfig: /lib32/ld-2.27.so is the dynamic linker, ignoring

--Vladimir

On 6 April 2018 at 20:41, Cinaed Simson <cinaed.sim...@gmail.com> wrote:

> On 04/06/2018 01:27 AM, Vladimir Komendantskiy wrote:
> >
> >
> > On 6 April 2018 at 00:22, Cinaed Simson <cinaed.sim...@gmail.com
> > <mailto:cinaed.sim...@gmail.com>> wrote:
> >
> >     Type
> >
> >       gnuradio-config-info --prefix
> >
> >     and post it.
> >
> >     Whether or not you need to add anything to your PYTHONPATH or
> >     LD_LIBRARY_PATH depends on where you installed it.
> >
> >
> > $ gnuradio-config-info --prefix
> > /usr/local
> >
> > Cheers,
> > Vladimir
>
> Post
>
>   gnuradio-config-info --enabled-components
>
> Make sure you're using python2 and not python3 when you start a shell
>
>   ls -ld /usr/bin/python
>
> Also, check
>
>   apt list --installed | grep gnuradio
>
> and
>
>   ldconfig -v | grep gnuradio
>
> -- Cinaed
>
>
>
>
>
>
>
>
>
>
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