Re: [Discuss-gnuradio] Unable to execute a flow with remote desktop on an RPi

[Jean Luc]

Thank you, Nate, I had missed that and after changing the option, it works fine now.

JL

On Sun, Apr 3, 2016 at 12:39 AM, Nate Temple <address@hidden> wrote:

Hi Jean,

Did you switch the "Generate Options" option in the properties of the top_block from WX GUI to QT GUI ?

- Nate

> On Apr 2, 2016, at 8:52 PM, Jean Luc <address@hidden> wrote:
>
> Hi everyone,
>
> I've just joined the list and I'm trying to execute a flow in GRC on an RPi3 accessed via a remote desktop connection (I need to run it headless because I'd like to use it for radio-astronomy with an SDR).  The flow is extremely simple (just an osmocom source and the WX GUI FFT sink, I'm trying to test the setup before doing anything).
>
> I did pass the first error, by setting
>
> [wxgui]
> style=nongl
>
> in ~/.gnuradio/config.conf but got C++ assertion "m_window" failed at ../src/gtk/dcclient.cpp(2043) in DoGetSize(): GetSize() doesn't work without window when running the flow. Googling for it revealed a workaround 2 years ago (downgrading Python) and another message on this list about the QT widgets that will replace the WX ones.
>
> So I replaced the WX GUI FFT sink with the QT Frequency Sink and now I get a different error (and no output):
>
>
> Executing: "/home/pi/top_block.py"
>
> linux; GNU C++ version 4.9.1; Boost_105500; UHD_003.007.003-0-unknown
>
> Using Volk machine: neon_hardfp_orc
> Traceback (most recent call last):
>   File "/home/pi/top_block.py", line 139, in <module>
>     tb = top_block()
>   File "/home/pi/top_block.py", line 63, in __init__
>     self.top_layout.addWidget(self._qtgui_waterfall_sink_x_0_win)
>   File "/usr/lib/python2.7/dist-packages/gnuradio/gr/top_block.py", line 101, in __getattr__
>     return getattr(self._tb, name)
> AttributeError: 'top_block_sptr' object has no attribute 'top_layout'
>
>
> I would appreciate some help here for choosing the recommended way to approach this (if possible at all).
>
> Many thanks,
> JL

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