I've the high level source of the problem, but not the root. If I
simply change my Desktop from Mate to Ubuntu's default, then GRC runs
fine and doesn't seg fault. So it seems there's something with Mate
on Ubuntu that conflicts with something in gnuradio-companion causing
it to seg fault, but I have no idea how to figure out what that might
be so I can fix it. I'm not sure I'd call it a bug, but there's
definitely a problem. Perhaps a gnuradio developer can test this on a
box running Mate? I'm not sure if it has to be Ubuntu or if it could
be any other distro. If anyone has any clues on how to fix this (I'd
really prefer using Mate over Unity) please let me know, or if you
need me to get more diagnostics to debug.
On Wed, May 22, 2019 at 4:54 PM Jason Fritz <address@hidden> wrote:
Problem: When I run gnuradio-companion and then just select the
window and move the mouse around or try to resize the window, the
program generates a segmentation fault. I don't even have the
opportunity to load any models and usually only have to wait <10
seconds before the crash.
OS: Ubuntu 18.04
I did read about other seg faults with GRC, but none quite matched
my situation. One suggested running gdb to get a backtrace, which I
did and why I believe the problem is GTK related. The backtrace is
given below from PyBOMBS installation.
My initial gnuradio installation was via apt-get. Thinking that was
the problem, I removed it and used PyBOMBS following the
instructions at
https://www.gnuradio.org/blog/2016-06-19-pybombs-the-what-the-how-and-the-why/
, which matches others I've found. When that still didn't solve the
problem, I tried compiling from source, although I tested it before
running 'make install'. No luck there either, and I couldn't figure
out how to get some of the dependencies so I'd prefer to use the
Pybombs version.
I'm not ruling out a conflict somewhere, but the backtrace seems to
indicate a GTK problem. Any ideas? Need more info?
Thanks!
which python
/usr/bin/python
python --version
Python 2.7.15rc1
which gnuradio-companion
/usr/local/src/prefix/default/bin/gnuradio-companion
gbd --args python $(which gnuradio-companion)
run
*** move mouse around window until it crashes about 5 seconds later
***
(gdb) bt
#0 0x0000000000000154 in ()
#1 0x00007ffff7bd0c2b in gdk_window_set_decorations () at
/usr/lib/x86_64-linux-gnu/libgtk3-nocsd.so.0
#2 0x00007fff94ce16f3 in () at /usr/lib/x86_64-linux-gnu/libgtk-
x11-2.0.so.0
#3 0x00007fff8e04a277 in () at /usr/lib/x86_64-linux-gnu/gtk-
2.0/modules/libappmenu-gtk-module.so
#4 0x00007fff9558310d in g_closure_invoke () at /usr/lib/x86_64-
linux-gnu/libgobject-2.0.so.0
#5 0x00007fff9559612e in () at /usr/lib/x86_64-linux-
gnu/libgobject-2.0.so.0
#6 0x00007fff9559e715 in g_signal_emit_valist () at
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#7 0x00007fff9559f12f in g_signal_emit () at /usr/lib/x86_64-
linux-gnu/libgobject-2.0.so.0
#8 0x00007fff94cd53d8 in gtk_widget_realize () at /usr/lib/x86_64-
linux-gnu/libgtk-x11-2.0.so.0
#9 0x00007fff94cdfa5d in () at /usr/lib/x86_64-linux-gnu/libgtk-
x11-2.0.so.0
#10 0x00007fff9558310d in g_closure_invoke () at /usr/lib/x86_64-
linux-gnu/libgobject-2.0.so.0
#11 0x00007fff9559612e in () at /usr/lib/x86_64-linux-
gnu/libgobject-2.0.so.0
#12 0x00007fff9559e715 in g_signal_emit_valist () at
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007fff9559f12f in g_signal_emit () at /usr/lib/x86_64-
linux-gnu/libgobject-2.0.so.0
#14 0x00007fff94cd4b96 in gtk_widget_show () at /usr/lib/x86_64-
linux-gnu/libgtk-x11-2.0.so.0
#15 0x00007fff8e2569da in () at /usr/lib/x86_64-linux-gnu/gtk-
2.0/modules/liboverlay-scrollbar.so
#16 0x00007fff960f7d03 in () at /usr/lib/x86_64-linux-gnu/libglib-
2.0.so.0
#17 0x00007fff960f7285 in g_main_context_dispatch () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fff960f7650 in () at /usr/lib/x86_64-linux-gnu/libglib-
2.0.so.0
#19 0x00007fff960f7962 in g_main_loop_run () at /usr/lib/x86_64-
linux-gnu/libglib-2.0.so.0
#20 0x00007fff94bb6a37 in gtk_main () at /usr/lib/x86_64-linux-
gnu/libgtk-x11-2.0.so.0
#21 0x00007fff9525ba75 in () at /usr/lib/python2.7/dist-
packages/gtk-2.0/gtk/_gtk.so
#22 0x000055555564f8af in PyEval_EvalFrameEx ()
#23 0x000055555564f232 in PyEval_EvalFrameEx ()
#24 0x000055555564f232 in PyEval_EvalFrameEx ()
#25 0x0000555555647d0a in PyEval_EvalCodeEx ()
#26 0x0000555555647629 in PyEval_EvalCode ()
#27 0x000055555567861f in ()
#28 0x0000555555673322 in PyRun_FileExFlags ()
#29 0x000055555567267d in PyRun_SimpleFileExFlags ()
#30 0x00005555556211ab in Py_Main ()
#31 0x00007ffff77feb97 in __libc_start_main (main=
0x555555620b10 <main>, argc=2, argv=0x7fffffffdab8,
init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized
out>, stack_end=0x7fffffffdaa8) at ../csu/libc-start.c:310
#32 0x0000555555620a2a in _start ()
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