gr-fosphor works with 3.10. It looks like you built gr-fosphor from source
when you had 3.9 installed, and then upgraded to 3.10. The gr-fosphor
library is looking for the old gnuradio-runtime library. If this is the
case, rebuild gr-fosphor under 3.10.

On Wed, Jun 8, 2022 at 10:46 AM Gwendoline Hochet Derevianckine <
ghoc...@semtech.com> wrote:

> Hi,
>
>
>
> 5 months ago I was using GnuRadio 3.9 with the fosphor sink block.
>
> I had some issues and some of you help me to fix it.
>
>
>
> Today I restart GnuRadio. It indicate me that the version is : 3.10.2.0.
>
> When I try to run my flowgraph : UHD:USRP Source à fosphor sink (Qt) I
> have the following error:
>
> Generating:
> '/home/ghochet/Documents/Experimentations/CaracterisationEnvironnement/2022/08-06-2022/test_detect_wifigrc.py'
> Executing: /usr/bin/python3 -u
> /home/ghochet/Documents/Experimentations/CaracterisationEnvironnement/2022/08-06-2022/test_detect_wifigrc.py
>
> Traceback (most recent call last):
>   File
> "/home/ghochet/Documents/Experimentations/CaracterisationEnvironnement/2022/08-06-2022/test_detect_wifigrc.py",
> line 28, in <module>
>     from gnuradio import fosphor
>   File "/usr/lib/python3/dist-packages/gnuradio/fosphor/__init__.py", line
> 9, in <module>
>     from .fosphor_python import *
> ImportError: libgnuradio-runtime.so.3.9.4: cannot open shared object file:
> No such file or directory
>
>
>
> I try to install the package with apt-get but I have an error saying it
> does not exist.
>
>
>
> Do you know how I can fix it ?
>
> Or do you know a block having the same output of fosphor ? I appreciate it
> because I can see in real time if a signal is present or not.
>
> I try using QT GUI Sink looking at the waterfall but this is not what I
> want. Same for the QT GUI Frequency Sink.
>
>
>
> Thanks for your help,
>
> Gwendoline
>
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