Description of problem: gnuradio is built against an older, incompatible, version of libuhd than F21 currently ships. gnuradio should be rebuilt. gqrx output: FATAL: GR-UHD detected ABI compatibility mismatch with UHD library. GR-UHD was build against ABI: 3.6.0-1, but UHD library reports ABI: 3.7.1-0 Suggestion: install an ABI compatible version of UHD, or rebuild GR-UHD component against this ABI version. Version-Release number of selected component (if applicable): gnuradio 3.7.5.1-1.fc21, uhd 3.7.2-1.fc21, gr-osmosdr 0.1.3 How reproducible: Run gqrx with an Ettus B200 connected.
Note: Works when I use gnuradio from rawhide.
Thanks for the report, reproduced. Reproducer: $ uhd_fft linux; GNU C++ version 4.9.1 20140813 (Red Hat 4.9.1-7); Boost_105500; UHD_003.007.002-0-unknown GR-UHD detected ABI compatibility mismatch with UHD library. GR-UHD was build against ABI: 3.6.0-1, but UHD library reports ABI: 3.7.1-0 Suggestion: install an ABI compatible version of UHD, or rebuild GR-UHD component against this ABI version.
gnuradio-3.7.5.1-2.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/gnuradio-3.7.5.1-2.fc21
Package gnuradio-3.7.5.1-2.fc21: * should fix your issue, * was pushed to the Fedora 21 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing gnuradio-3.7.5.1-2.fc21' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2015-1237/gnuradio-3.7.5.1-2.fc21 then log in and leave karma (feedback).
gnuradio-3.7.5.1-2.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report.