Solved: Gnuradio UHD install 3.10.9.2 giving QT error in trx_am.grc

[mgarrett1955]

Description of the setup:

• Device:
• Red Pitays 125-14,
• SD card image:
• Alpine SDcard image (Latest on web)
• Application:
• Gnuradio
• Other relevant information:
• Ubuntu 24.04
• UHD and gnuradio installed using UHD repository sudo add-apt-repository ppa:ettusresearch/uhd sudo apt-get update sudo apt-get install libuhd-dev uhd-host

Installed UHD 4.7, gnuradio 3.10.9.2

Description of the problem:

When I run the trx_am.grc script or any script using the Red pitays source block I get the follotin error:

QSocket Notifier: Can only be used with threads started with QT, and the script ends.

Steps to reproduce the problem:

1. Install UHD and gnu radio from the included repository above
2. Set the GRC blocks path
3. Run the grc file

[mgarrett1955]

I installed through the Ubuntu repository as suggested in the instructions, and it works properly. The Gnuradio version is 10.9.2, Im not sure of the UHD version, ill check that. It looks like the Ettus supplied gnubuild through the above links, has an incompatible library somewhere.. Since this works Im going with this setup!! So I do not need a solution at this point. Thank you for the awesome work!!

[mgarrett1955]

It turns out I am still getting the same error, but the flow graphs run, which they do not in the other configuration.