This sounds a lot like cpu overconsumption. Look at the output of GRC,
does it tell you
>>> Warning: This flow graph may not have flow control: no audio or
usrp blocks found. Add a Misc->Throttle block to your flow graph to
avoid CPU congestion.
If not, do it anyway.
Greetings
Marcus Müller
Am
I run a flow graph under GRC with WX GUI widgets (sliders, FFT sink, etc) on
Linux. The graph works and I can receive signals, but the GUI is not
responsive (I can't move a slider, choose between radio buttons), and it
gets grayed out after a few seconds. The flow graph continues to work and
the gr
