Apologies for being vague. As I mentioned earlier, it also happens to the QT
waterfall sink. When I was using the WX GUI, the same two sinks failed. Here’s
the detail:
Executing: /usr/bin/python -u ~/Documents/top_block.py
RSP devIndex: [0] RSP2
SDRplay bandwidth requested=1.536e+06 actual=1536000
Traceback (most recent call last):
File “~/Documents/top_block.py", line 299, in <module>
main()
File “~/Documents/top_block.py", line 287, in main
tb = top_block_cls()
File “~/Documents/top_block.py", line 191, in __init__
1 #number of inputs
File "/usr/lib/python2.7/dist-packages/gnuradio/qtgui/qtgui_swig.py", line
1563, in make
return _qtgui_swig.freq_sink_c_make(fftsize, wintype, fc, bw, name,
nconnections, parent)
RuntimeError: std::exception
>>> Done
Here’s the link to the GNURadio archive:
https://lists.gnu.org/archive/html/discuss-gnuradio/2017-08/msg00116.html
<https://lists.gnu.org/archive/html/discuss-gnuradio/2017-08/msg00116.html>
Thanks for the help.
Carlos
> On Feb 20, 2020, at 10:12 AM, Müller, Marcus (CEL) <[email protected]> wrote:
>
> There's no such thing as "the Qt4 runtime error". Please send us the
> exactly what you're getting. This mailing list sees a couple of
> thousand emails in 3 years, so really, we'll need you to tell us what
> you're reading as error *in verbatim*, and a link to the mailing list
> archive post (or at least the exact date and subject line) to figure
> out what you're talking about.
>
> Best regards,
> Marcus
> On Thu, 2020-02-20 at 14:54 +0000, Carlos Velazquez wrote:
>> I was referring to the QT4 runtime error. I was hoping 3 years may have
>> provided a solution since those QT blocks are so basic (frequency sink,
>> waterfall).
>>
>> I’m hesitant to switch to 3.8 since I don’t know if my OOT items will work,
>> took me forever to get working, and my project is due in one week. But I’ll
>> try on a VM tonight and see.
>>
>> Thanks for your help!
>>
>>> On Feb 20, 2020, at 8:32 AM, Müller, Marcus (CEL) <[email protected]> wrote:
>>>
>>> Hi Carlos,
>>>
>>>> I saw mention to this error
>>>
>>> not quite sure what you're referring to. What error?
>>>
>>> WX not working on every platform and us not having adequate knowledge
>>> to repair it was the reason to remove it from GNU Radio, so my
>>> recommendation really is using Qt instead.
>>>
>>> Also, instead of the oooold GNU Radio 3.7.11, I'd recommend you get our
>>> release builds:
>>>
>>> uninstall your old GNU Radio, and then run
>>> sudo add-apt-repository ppa:gnuradio/gnuradio-releases
>>> sudo apt-get update
>>> to get GNU Radio 3.8.
>>>
>>> Best regards,
>>> Marcus
>>>
>>>
>>>> On Thu, 2020-02-20 at 00:17 -0500, Carlos wrote:
>>>> I saw mention to this error in 2017 in the archives and the fix was a
>>>> delete and install. This is running Ubuntu 18.04 with GR3.7.11-10. The
>>>> weird part is that WX FFT does not work and none of the frequency related
>>>> QTs either. The others do.
>>>>
>>>> Any idea how to fix that besides remove and re-install?
>>>>
>>>> v/r,
>>>>
>>>> Carlos
