Comment 6 for bug 1637774

if you have compiled gr-osmosdr yourself and still nothing works then it could be becase there's another lib installed in the /usr/lib/x86_64-linux-gnu

solution:

sudo mv /usr/lib/x86_64-linux-gnu/libgnuradio-osmosdr.so.0.1.4 /usr/lib/x86_64-linux-gnu/libgnuradio-osmosdr.so.0.1.4.sav

sudo ln -s /usr/local/lib/libgnuradio-osmosdr.so /usr/lib/x86_64-linux-gnu/libgnuradio-osmosdr.so.0.1.4