Re: gnuradio 3.9 on ubuntu 20.04

Hi Jeff

thank you!

it's work for me by removing cache.json

Now gnuradio flow graph run just fine.

BR

David

Il giorno sab 17 apr 2021 alle ore 12:57 Jeff Long <willcode4@gmail.com> ha scritto:

The first thing to try is

- quit GRC

- rm ~/.cache/grc_gnuradio/cache.json

- start GRC

- reselect the signal type in the signal source block (or delete and re-add the block)

If that does not work, you might want to try a more recent version of 3.9, installed from the PPA ppa:gnuradio/gnuradio-maint-3.9.

On Sat, Apr 17, 2021 at 2:17 AM David Martini <martini.david.p1@gmail.com> wrote:

Hi all,

I upgrade the system to ubuntu 20.04 starting from iso.
Then I install GNURADIO 3.9.0.0 following the instruction in the wiki.

GNU radio is correctly installed because I'm able to run successfully top_block.py but I have problems building the flowgraf.
In attached picture of the error that I get : waveforms generator don't show frequency (even do in block editor is correctly assigned).

Of course I'm not able to generate any topblock.

I try to re-install gnuradio but get same error.

On internet I found some indication that the problem can be in grc.conf file global_block_patch but not working on my cases.

Thank you for help.

David