From GNU Radio
How to install a stable GNU Radio version 3.8 and gr-iio
- download and install Ubuntu 20.04 - do not check "install third party software"
- from a terminal enter:
sudo apt install gnuradio
- follow the steps in https://wiki.gnuradio.org/index.php/ModuleNotFoundError
- to install gr-iio, follow step 7 in https://github.com/duggabe/gr-control#installation