Hi Jose - I can run your script for hours without any issues on both GR
3.8 and 3.10.
Have you tried setting
export QT_QPA_PLATFORM=wayland
as indicated in the first error message - to see if the script runs
longer then 10 minutes?
My guess is if you eliminate the first exception the other exceptions
will disappear.
Are you working from the console of a linux machine - or are you working
from the console of a Windows machine - and then connecting to the a
Linux machine by some method?
-- Cinaed
On Tue, Nov 22, 2022 at 10:23 PM Jose Ruvalcaba wrote:
Hello,
I've been noticing an issue popping out everytime I stop running
my flowgraph and I was wondering if someone had some insight on
it. I have a flowgraph where a signal source is connected to a
probe signal block. This block is constantly updating values and
are being displayed using the QT GUI Label block. However, after
running my flowgraph for about 10 minutes I get the following error:
*/Executing: /usr/bin/python3 -u
/home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py/*
*/
/*
*/Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use
QT_QPA_PLATFORM=wayland to run on Wayland anyway./*
*/Exception in thread Thread-1 (_amp_probe):/*
*/Traceback (most recent call last):/*
*/ File
"/home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py",
line 150, in _amp_probe/*
*/self.doc.add_next_tick_callback(functools.partial(self.set_amp,val))/*
*/ File
"/usr/lib/python3/dist-packages/gnuradio/gr/hier_block2.py", line
88, in __getattr__/*
*/return getattr(self._impl, name)/*
*/AttributeError: 'gnuradio.gr.gr_python.top_block_pb' object has
no attribute 'doc'/*
*/
/*
*/During handling of the above exception, another exception
occurred:/*
*/
/*
*/Traceback (most recent call last):/*
*/ File "/usr/lib/python3.10/threading.py", line 1016, in
_bootstrap_inner/*
*/self.run()/*
*/ File "/usr/lib/python3.10/threading.py", line 953, in run/*
*/self._target(*self._args, **self._kwargs)/*
*/ File
"/home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py",
line 152, in _amp_probe/*
*/self.set_amp(val)/*
*/ File
"/home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py",
line 182, in set_amp/*
*/self.set_variable_qtgui_label_0(self.amp)/*
*/ File
"/home/spacerfvm/Documents/GNURadio_3.10_flowgraphs/func_probe_test.py",
line 189, in set_variable_qtgui_label_0/*
*/Qt.QMetaObject.invokeMethod(self._variable_qtgui_label_0_label,
"setText", Qt.Q_ARG("QString",
str(self._variable_qtgui_label_0_formatter(self.variable_qtgui_label_0/*
*/RuntimeError: wrapped C/C++ object of type QLabel has been deleted/*
*//*
It seems that my issue is related to the QT GUI Label block
because when I remove it and add say QT GUI Number sink, this
issue doesn't appear.
Has anyone experienced this issue? If so, would anyone be able to
steer me in the direction to fix it? I am currently running on
Ubuntu 22.04 and am running GNU RADIO 3.10.1.1 which I installed
using sudo apt-get install. I've also attached the flowgraph I am
talking about.
Thanks,
Jose Ruvalcaba
