Re: [Discuss-gnuradio] Gnuradio 3.7.2 adn WX GUI Waterfall Sink with only blue screen output

Hi,

Found no way to solve the problem, after trying to make openGL working and disabling as described in Tom's message so I did a clean Ubuntu 12,04 install, then run the wonderfull gnuradio installation script and now I have a nicely working waterfall with Gnuradio 3.7.2

Now, before playing time starts I have to re-install some other software ;-)

Thanks,

Ben

2013/11/25 Tom Rondeau <tom@trondeau.com>

On Mon, Nov 25, 2013 at 3:11 PM, Ben Z en de rest
<hoofdeigenwijs@gmail.com> wrote:
> Just to update what I did to try and solve this problem (with no luck yet)
>
> I did read that the problem could be related to the need for Python OpenGL
> support. I did install Python OpenGL (and OpenGL accelerator) from
> http://pyopengl.sourceforge.net  but that gave me a "X windows system error"
> on all Gnuradio examples that I tried.
>
> Had to remove Python OpenGL to solve that "X windows system error" but the
> waterfall sink still only shows blue lines.
>
>
> Then I had Synaptic install the Python OpenGL but with the same "X windows
> system error" as result. So I had it removed and now I am back at my first
> problem.
>
> Kind regards,
>
> Ben

Ben,
Yes, it's probably related to OpenGL issues. Sounds like your system
doesn't like OpenGL much at all.

Try disabling it in the WXGUI plots by editing
$prefix/etc/gnuradio/conf.d/gr-wxgui.conf and changing "style = auto"
to "style = nongl".

Tom

> 2013/11/24 Ben Z en de rest <hoofdeigenwijs@gmail.com>
>>
>> Hi,
>>
>> Installed Gnuradio 3.7.2 from source. Had some troubles loading files from
>> earlier versions so I started from scratch with the FM receiver from author
>> 2h20. Added a bandpass filter to filter the 19 kHz pilot tone (just for fun)
>> but want to add the waterfall sink to see / show 57 kHz RDS carrier (also
>> for fun / getting experience).
>>
>> The waterfall sink only shows a blue screen. Tried different range
>> settings, different ref scale settings and FFT sizes. Stole the settings
>> from this example
>> http://www.kj6msg.com/2013/09/gnu-radio-rtl-sdr-and-mac-os-x.html but still
>> no output. The waterfall also shows no scale information or labels.
>>
>> Found another problem about this on the list where the question was what
>> happened if a signal source was connected to the waterfall sink without
>> anything else, I tried that also but even there only a blue screen is filled
>> but no signal and no labels and so on are showed.
>>
>> The output window is here:
>> http://www.pe2bz.nl/hamradio/uploads/images/Selectie_001.png
>>
>> Thanks for any advice,
>>
>>
>> Ben
>
>
>

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