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Re: [Discuss-gnuradio] GRC not responding?

From: Marcus Müller
Subject: Re: [Discuss-gnuradio] GRC not responding?
Date: Sat, 5 Dec 2015 11:25:21 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

Hi Gerard!
> I'm new to GNURadio (and to Linux), and I try to understand how it works.

Well then: Welcome to the community!

> I use the tutorials from GNU site and from ETTUS which are quite
> simple to begin.
Since there are so many tutorials: I like to point people to our Guided
Tutorials, which I consider to be the "official" way to get started with
GNU Radio, since we pay close attention to keeping these up-to-date and
correct etc:
> However, I have some problems: I cannot save the flow-chart nor
> execute it.
I have a blind guess (having my last name): You have entered a special
character in the author field? I recently patched that, but that fix is
not in 3.7.5.

If it's not, we'll have a few more things we can look at:
> When I start GRC and save the first screen (only variable + option
> squares) it's OK.
Good sign.
> Then I enter a simple sketch (signal source + slider + throttle + FFT
> sink) and it's impossible to save or to execute.
Hm, are you using the same GUI widgets as in your options->build options?
To explain: If you use the Qt frequency sink, you will have to make sure
your build options is set to Qt; the same applies for WX Gui and the Wx
build option. You cannot mix those.
I recommend using Qt GUI. It's actively developed, and in my opinion,
feature-richer. Also, in my experience, it performs much better.
> There are no apparent error (all is black and the STOP sign is not on)
> and I counter-checked dozen of times, directly and against similar
> tutorials.
> No error arise during saving and execute phases, but nothing happens.
> It's probably something completely obvious, but I cannot figure what.
> It worked and suddenly did not work!
> Any hint would be welcome!
> I use version 3.7.5 (this is the one which has been automatically
> installed with "apt-get install").
> OS is the last DEBIAN with KDE desk.
That sounds alright.
> Have all a nice WE.
Best regards,

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