Description of problem: The gnuradio rotator block is broken in 3.8.0.0. I hit this when building a git checkout of gqrx using in a Fedora 32 container. Narrowband FM demodulation in gqrx is almost unintelligible. Clayton pointed me at: https://github.com/gnuradio/gnuradio/issues/2748 The fixes are in the maint branch, and appear to be in 3.8.1.0. Note that gqrx was only modified recently to use the gnuradio rotator, so this bug is not present in the Fedora 32 version of gqrx.
It seems that in 3.8.1.0 it just uses workaround to bypass the broken volk-2.0.0 code in the rotator block, but it should resolve your problem.
FEDORA-2020-b3cf6c9982 has been submitted as an update to Fedora 32. https://bodhi.fedoraproject.org/updates/FEDORA-2020-b3cf6c9982
FEDORA-2020-b3cf6c9982 has been pushed to the Fedora 32 testing repository. In short time you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2020-b3cf6c9982` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2020-b3cf6c9982 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Thanks, this update does fix my issue.
FEDORA-2020-b3cf6c9982 has been pushed to the Fedora 32 stable repository. If problem still persists, please make note of it in this bug report.