Hi Jim, though the crash here definitely is different from what you witness in GRC, I'd chalk it up to either a bug in Matplotlib (a python graph drawing library) or our code. https://stackoverflow.com/a/17935694/4433386 might be an indication that we're the ones doing something wrong.
I don't have the bandwidth to look at this today, but could you open a bug report on https://github.com/gnuradio/gnuradio/issues with the the info that you run gr-perf-monitorx manually, and got that backtrace and crash, and assign it to me? That way, I don't lose track of it. Thanks! Marcus On Sun, 2018-07-15 at 21:47 -0700, Jim Larsen wrote: > Hi Marcus, > > Thank you for your patience with my CtrlPort Performance Monitor > problems. I have been distracted by other projects and finally had > time to try your suggestion. > > > On Jul 4, 2018, at 1:47 AM, Müller, Marcus (CEL) <muel...@kit.edu> > > wrote: > > > > hm... > > no, but if `gr-ctrlport-monitor` works, does running `gr-perf- > > monitorx`? Do you still get the same blank display, are there any > > warnings/errors printed? > > Here is the terminal output from running gr-perf-monitorx: > > jim@vmware:~/gnuradio/prefix/perfmon$ gr-perf-monitorx vmware 46263 > QPaintDevice: Cannot destroy paint device that is being painted > Traceback (most recent call last): > File "/home/jim/.local/lib/python2.7/site- > packages/matplotlib/backends/backend_qt5agg.py", line 72, in > paintEvent > painter.drawImage(origin / self._dpi_ratio, qimage) > File "/home/jim/.local/lib/python2.7/site- > packages/matplotlib/backends/backend_qt5.py", line 273, in _dpi_ratio > return self.devicePixelRatio() or 1 > RuntimeError: wrapped C/C++ object of type FigureCanvasQTAgg has been > deleted > Segmentation fault (core dumped) > > Does this give you any ideas about what is causing the blank > Performance Monitor graph display? > > Regards, > > Jim > > >
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