GDB Debugger not working

[aha_1980]

@Shane00 said in GDB Debugger not working:

am running QT Creator on the ARM system.

Ok. This is a very special setup, I'm not sure anyone here has a similar one and might be able to help you.

Note that the usual setup is to run Qt Creator on an x86 Linux PC and to cross-compile for the ARM target system. I do not say that this environment is easier to setup, but it is more common and therefore more people might be able to help you.

I am not using python for my program but i need the python-cv? Is it because the debugger uses the python interpreter.

Correct. And from the debugger log we can see that it cannot load the module python-cv. It does, however, not say, what the problem really is.

Qt 5.9.5 (arm64-little_endian-lp64 shared (dynamic) release build; by GCC 7.4.0) on "xcb"

That is the Qt version, not the Qt Creator version...

Regards

[aha_1980]

@Shane00 said in GDB Debugger not working:

Anyways i did what the https://forum.qt.io/topic/95387/unable-to-start-debugger did too and i still cannot run.

What exactly did you do?

Regards

[Shane00]

@aha_1980 I see. For the project i am working on, it is far easier to work directly from the embedded system itself because of parallel programming config that i require for it to work.

My bad, it is QT Creator 4.5.2

[Shane00]

Anyways i did what the https://forum.qt.io/topic/95387/unable-to-start-debugger did too and i still cannot run.

What exactly did you do?

Regards

I did a sudo apt install python-opencv
I also did a sudo apt install python3-opencv

ls /usr/local/lib/python3.6/dist-packages/ -> prebuilt previously already

cv2                                          mpl_toolkits
cycler-0.10.0.dist-info                      numpy
cycler.py                                    numpy-1.19.0-py3.6.egg-info
Cython                                       pandas
Cython-0.29.20.dist-info                     pandas-1.0.5-py3.6.egg-info
cython.py                                    pkg_resources
easy_install.py                              __pycache__
imutils                                      pylab.py
imutils-0.5.3.egg-info                       pyparsing-2.4.7.dist-info
kiwisolver-1.2.0-py3.6.egg-info              pyparsing.py
kiwisolver.cpython-36m-aarch64-linux-gnu.so  pyximport
matplotlib                                   setuptools
matplotlib-3.2.2-py3.6.egg-info              setuptools-47.3.1.dist-info
matplotlib-3.2.2-py3.6-nspkg.pth

ls '/usr/lib/python3.6' 

abc.py                         operator.py
aifc.py                        optparse.py
antigravity.py                 os.py
argparse.py                    _osx_support.py
ast.py                         pathlib.py
asynchat.py                    pdb.py
asyncio                        __phello__.foo.py
asyncore.py                    pickle.py
base64.py                      pickletools.py
bdb.py                         pipes.py
binhex.py                      pkgutil.py
bisect.py                      platform.py
_bootlocale.py                 plistlib.py
bz2.py                         poplib.py
calendar.py                    posixpath.py
cgi.py                         pprint.py
........

[aha_1980]

Hi @Shane00,

what you could try is to open python and python3 and do an import opencvtypes there to see if that works or if another error appears.

Regards

[Shane00]

@aha_1980

nvidia@nvidia-desktop:/usr/lib$ python3
Python 3.6.9 (default, Jul 17 2020, 12:50:27) 
[GCC 8.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import opencvtypes
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'opencvtypes'

I got this error

[aha_1980]

@Shane00 so now you know where the problem originates from and can search for solutions.

Regards

[Shane00]

@aha_1980 I manually went to add 2 missing files from my debugger folder. utils.py and opencvtypes.py and now i have no clue what is going on at all.

This is the debug log

Starting debugger "GdbEngine" for ABI "arm-linux-generic-elf-64bit"...
dStart parameters: 'test2' mode: 1
dABI: arm-linux-generic-elf-64bit
dLanguages: c++ 
dExecutable: /home/nvidia/Desktop/Video_Analytics_OpenCV/build-test2-Desktop-Debug/test2  [terminal]
dDirectory: /home/nvidia/Desktop/Video_Analytics_OpenCV/build-test2-Desktop-Debug
dDebugger: /usr/bin/gdb
dProject: /home/nvidia/Desktop/Video_Analytics_OpenCV/test2
dAdditional Search Directories:
dSysroot: 
dDebug Source Location: 
dDebugger settings:
dAdditionalArguments:   (default: )
dAdjustBreakpointLocations: true  (default: true)
dAllPluginBreakpoints: true  (default: true)
dAlwaysAdjustColumnWidths: true  (default: true)
dAutoDerefPointers: true  (default: true)
dAutoEnrichParameters: true  (default: true)
dAutoQuit: false  (default: false)
dBreakEvent:   (default: )
dBreakOnAbort: false  (default: false)
dBreakOnCatch: false  (default: false)
dBreakOnCrtDbgReport: false  (default: false)
dBreakOnFatal: false  (default: false)
dBreakOnThrow: false  (default: false)
dBreakOnWarning: false  (default: false)
dBreakpointCorrection: true  (default: true)
dBreakpointsFullPath: false  (default: false)
dCDB_Console: false  (default: false)
dCloseBuffersOnExit: false  (default: false)
dCloseMemoryBuffersOnExit: true  (default: true)
dDisplayStringLimit: 100  (default: 100)
dEnableReverseDebugging: false  (default: false)
dExtraDumperFile:   (default: )
dFontSizeFollowsEditor: false  (default: false)
dGdbCustomDumperCommands:   (default: )
dGdbPostAttachCommands:   (default: )
dGdbStartupCommands:   (default: )
dIdentifyDebugInfoPackages: false  (default: false)
dIgnoreFirstChanceAccessViolation: false  (default: false)
dIntelFlavor: false  (default: false)
dLoadGdbDumpers2: false  (default: false)
dLoadGdbInit: true  (default: true)
dLogTimeStamps: false  (default: false)
dMaximalStackDepth: 20  (default: 20)
dMaximalStringLength: 10000  (default: 10000)
dMultiInferior: false  (default: false)
dNoPluginBreakpoints: false  (default: false)
dQmlInspector.ShowAppOnTop: false  (default: false)
dRaiseOnInterrupt: true  (default: true)
dSelectedPluginBreakpoints: false  (default: false)
dSelectedPluginBreakpointsPattern: .*  (default: .*)
dShowQObjectNames2: true  (default: true)
dShowQmlObjectTree: true  (default: true)
dShowQtNamespace: true  (default: true)
dShowStandardNamespace: true  (default: true)
dShowThreadNames: false  (default: false)
dSkipKnownFrames: false  (default: false)
dSortStructMembers: true  (default: true)
dSourcePaths:   (default: )
dStationaryEditorWhileStepping: false  (default: false)
dSwitchModeOnExit: false  (default: false)
dSymbolPaths:   (default: )
dTargetAsync: false  (default: false)
dUseAddressInBreakpointsView: false  (default: false)
dUseAddressInStackView: false  (default: false)
dUseAlternatingRowColours: false  (default: false)
dUseCodeModel: true  (default: true)
dUseDebuggingHelper: true  (default: true)
dUseDynamicType: true  (default: true)
dUseMessageBoxForSignals: true  (default: true)
dUsePythonDumper: true  (default: true)
dUseToolTips: true  (default: true)
dUseToolTipsInBreakpointsView: false  (default: false)
dUseToolTipsInBreakpointsView: false  (default: true)  ***
dUseToolTipsInLocalsView: false  (default: false)
dWarnOnReleaseBuilds: true  (default: true)
dWatchdogTimeout: 20  (default: 20)
dState changed from DebuggerNotReady(0) to EngineSetupRequested(1) [master]
dCALL: SETUP ENGINE
dTRYING TO START ADAPTER
dENABLING TEST CASE: 0
dSTARTING /usr/bin/gdb -i mi
dGDB STARTED, INITIALIZING IT
<1show version
<2show debug-file-directory
<3set print object on
<4set breakpoint pending on
<5set print elements 10000
<6set unwindonsignal on
<7set width 0
<8set height 0
sSetting up inferior...
<9set substitute-path /var/tmp/qt-src /usr/include/aarch64-linux-gnu
<10python sys.path.insert(1, '/usr/share/qtcreator/debugger/')
<11python sys.path.append('/usr/bin/data-directory/python')
<12python from gdbbridge import *
<13python theDumper.loadDumpers({"token":13})

>=thread-group-added,id="i1"
>~"GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git\n"
>~"Copyright (C) 2018 Free Software Foundation, Inc.\n"
>~"License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.  Type \"show copying\"\nand \"show warranty\" for details.\n"
>~"This GDB was configured as \"aarch64-linux-gnu\".\nType \"show configuration\" for configuration details."
>~"\nFor bug reporting instructions, please see:\n"
>~"<http://www.gnu.org/software/gdb/bugs/>.\n"
>~"Find the GDB manual and other documentation resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"
>~"For help, type \"help\".\n"
>~"Type \"apropos word\" to search for commands related to \"word\".\n"

>&"show version\n"
>~"GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git\n"
>~"Copyright (C) 2018 Free Software Foundation, Inc.\n"
>~"License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\nThis is free software: you are free to change and redistribute it.\nThere is NO WARRANTY, to the extent permitted by law.  Type \"show copying\"\nand \"show warranty\" for details.\n"
>~"This GDB was configured as \"aarch64-linux-gnu\".\nType \"show configuration\" for configuration details."
>~"\nFor bug reporting instructions, please see:\n"
>~"<http://www.gnu.org/software/gdb/bugs/>.\n"
>~"Find the GDB manual and other documentation resources online at:\n<http://www.gnu.org/software/gdb/documentation/>.\n"
>~"For help, type \"help\".\n"
>~"Type \"apropos word\" to search for commands related to \"word\".\n"
>1^done
dPARSING VERSION: 1^done
dSUPPORTED GDB VERSION GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
dCopyright (C) 2018 Free Software Foundation, Inc.
dLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
dThis is free software: you are free to change and redistribute it.
dThere is NO WARRANTY, to the extent permitted by law.  Type "show copying"
dand "show warranty" for details.
dThis GDB was configured as "aarch64-linux-gnu".
dType "show configuration" for configuration details.
dFor bug reporting instructions, please see:
d<http://www.gnu.org/software/gdb/bugs/>.
dFind the GDB manual and other documentation resources online at:
d<http://www.gnu.org/software/gdb/documentation/>.
dFor help, type "help".
dType "apropos word" to search for commands related to "word".
dGNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
dCopyright (C) 2018 Free Software Foundation, Inc.
dLicense GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
dThis is free software: you are free to change and redistribute it.
dThere is NO WARRANTY, to the extent permitted by law.  Type "show copying"
dand "show warranty" for details.
dThis GDB was configured as "aarch64-linux-gnu".
dType "show configuration" for configuration details.
dFor bug reporting instructions, please see:
d<http://www.gnu.org/software/gdb/bugs/>.
dFind the GDB manual and other documentation resources online at:
d<http://www.gnu.org/software/gdb/documentation/>.
dFor help, type "help".
dType "apropos word" to search for commands related to "word".
dUSING GDB VERSION: 80100, BUILD: 0
<14-interpreter-exec console "set target-async off"

>&"show debug-file-directory\n"
>~"The directory where separate debug symbols are searched for is \"/usr/lib/debug\".\n"
>2^done

>&"set print object on\n"
>=cmd-param-changed,param="print object",value="on"
>3^done

>&"set breakpoint pending on\n"
>=cmd-param-changed,param="breakpoint pending",value="on"
>4^done

>&"set print elements 10000\n"
>=cmd-param-changed,param="print elements",value="10000"
>5^done

>&"set unwindonsignal on\n"
>=cmd-param-changed,param="unwindonsignal",value="on"
>6^done

>&"set width 0\n"
>=cmd-param-changed,param="width",value="4294967295"
>7^done

>&"set height 0\n"
>8^done

>&"set substitute-path /var/tmp/qt-src /usr/include/aarch64-linux-gnu\n"
>9^done

>&"python sys.path.insert(1, '/usr/share/qtcreator/debugger/')\n"
>10^done

>&"python sys.path.append('/usr/bin/data-directory/python')\n"
>11^done

>&"python from gdbbridge import *\n"

>12^done

>&"python theDumper.loadDumpers({\"token\":13})\n"

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>13^done
dENGINE SUCCESSFULLY STARTED
dNOTE: ENGINE SETUP OK
dState changed from EngineSetupRequested(1) to EngineSetupOk(3) [master]
dCALL: SETUP INFERIOR
dState changed from EngineSetupOk(3) to InferiorSetupRequested(4) [master]
dTaking notice of pid 23121
 Going to attach to 23121
sSetting breakpoints...
dSetting breakpoints...
dATTEMPT BREAKPOINT SYNCHRONIZATION
dBREAKPOINTS ARE SYNCHRONIZED

>14^done
dALL COMMANDS DONE; INVOKING CALLBACK
dNOTE: INFERIOR SETUP OK
dState changed from InferiorSetupRequested(4) to InferiorSetupOk(6) [master]
dState changed from InferiorSetupOk(6) to EngineRunRequested(7) [master]
dCALL: RUN ENGINE
<15attach 23121

>&"attach 23121\n"
>~"Attaching to process 23121\n"
>=thread-group-started,id="i1",pid="23121"
sThread group i1 created.
>=thread-created,id="1",group-id="i1"
sThread 1 created.
>15^done
dINFERIOR ATTACHED AND RUNNING
>~"Reading symbols from /home/nvidia/Desktop/Video_Analytics_OpenCV/build-test2-Desktop-Debug/test2..."
sReading /home/nvidia/Desktop/Video_Analytics_OpenCV/build-test2-Desktop-Debug/test2......
>~"done.\n"
>=library-loaded,id="/lib/ld-linux-aarch64.so.1",target-name="/lib/ld-linux-aarch64.so.1",host-name="/lib/ld-linux-aarch64.so.1",symbols-loaded="0",thread-group="i1",ranges=[{from="0x0000007f870e0040",to="0x0000007f870f6e48"}]
sLibrary /lib/ld-linux-aarch64.so.1 loaded.
>~"Reading symbols from /lib/ld-linux-aarch64.so.1..."
sReading /lib/ld-linux-aarch64.so.1......
>~"Reading symbols from /usr/lib/debug//lib/aarch64-linux-gnu/ld-2.27.so..."
sReading /usr/lib/debug//lib/aarch64-linux-gnu/ld-2.27.so......
>~"done.\n"
>~"done.\n"
>~"0x0000007f870e01c0 in _start () from /lib/ld-linux-aarch64.so.1\n"
>*stopped,frame={addr="0x0000007f870e01c0",func="_start",args=[],from="/lib/ld-linux-aarch64.so.1"},thread-id="1",stopped-threads="all",core="2"
dNOTE: ENGINE RUN AND INFERIOR STOP OK
sStopped.
dState changed from EngineRunRequested(7) to InferiorStopOk(14) [master]
dNOTE: INFERIOR RUN REQUESTED
sRun requested...
dState changed from InferiorStopOk(14) to InferiorRunRequested(10) [master]
sRunning requested...
<16-exec-continue

>16^running
dNOTE: INFERIOR RUN OK
sRunning.
dState changed from InferiorRunRequested(10) to InferiorRunOk(11) [master]
>*running,thread-id="all"
dNOTE: INFERIOR STILL RUNNING IN STATE InferiorRunOk.

>~"\nProgram"
>~" received signal SIGSTOP, Stopped (signal).\n"
>~"0x0000007f870e01c0 in _start () from /lib/ld-linux-aarch64.so.1\n"
>*stopped,reason="signal-received",signal-name="SIGSTOP",signal-meaning="Stopped (signal)",frame={addr="0x0000007f870e01c0",func="_start",args=[],from="/lib/ld-linux-aarch64.so.1"},thread-id="1",stopped-threads="all",core="3"
dNOTE: INFERIOR SPONTANEOUS STOP
sStopped.
dState changed from InferiorRunOk(11) to InferiorStopOk(14) [master]
<17importPlainDumpers off
dHANDLING SIGNAL SIGSTOP
sStopped: Stopped (signal) (Signal SIGSTOP).

>&"p 0\n"
>~"$1 = 0"
>~"\n"
>^done

<18-thread-info
>&"importPlainDumpers off\n"
>~"1 printer disabled\n"
>~"0 of 1 printers enabled\n"
>~"None\n"
>17^done

>18^done,threads=[{id="1",target-id="process 23121",name="test2",frame={level="0",addr="0x0000007f870e01c0",func="_start",args=[],from="/lib/ld-linux-aarch64.so.1"},state="stopped",core="3"}],current-thread-id="1"
<19python theDumper.fetchStack({"limit":20,"nativemixed":0,"token":19})

>&"python theDumper.fetchStack({\"limit\":20,\"nativemixed\":0,\"token\":19})\n"
>~"result={token=\"0\",stack={frames=[frame={level=\"0\",address=\"0x7f870e01c0\",function=\"_start\",file=\"\",line=\"0\",module=\"\",language=\"c\"}frame={level=\"1\",address=\"0x0\",function=\"??\",file=\"\",line=\"0\",module=\"\",language=\"c\"}].report}}\n"
>19^done
<20set disassembly-flavor att
<21-interpreter-exec console "disassemble /rm 0x7f870e01c0"
<22-stack-select-frame 0
<23python theDumper.fetchVariables({"autoderef":1,"context":"","displaystringlimit":"100","dyntype":1,"expanded":["return","inspect","local","watch"],"fancy":1,"formats":{},"nativemixed":0,"partialvar":"","passexceptions":0,"qobjectnames":1,"resultvarname":"","stringcutoff":"10000","token":23,"typeformats":{},"watchers":[]})

>&"set disassembly-flavor att\n"
>&"No symbol \"disassembly\" in current context.\n"
>20^error,msg="No symbol \"disassembly\" in current context."

>~"Dump of assembler code for function _start:\n"
>~"=> 0x0000007f870e01c0 <+0>:\te0 03 00 91\tmov\tx0, sp\n"
>~"   0x0000007f870e01c4 <+4>:\te3 01 00 94\tbl\t0x7f870e0950 <_dl_start>\n"
>~"   0x0000007f870e01c8 <+8>:\tf5 03 00 aa\tmov\tx21, x0\n"
>~"End of assembler dump.\n"
>21^done

>22^done

>&"python theDumper.fetchVariables({\"autoderef\":1,\"context\":\"\",\"displaystringlimit\":\"100\",\"dyntype\":1,\"expanded\":[\"return\",\"inspect\",\"local\",\"watch\"],\"fancy\":1,\"formats\":{},\"nativemixed\":0,\"partialvar\":\"\",\"passexceptions\":0,\"qobjectnames\":1,\"resultvarname\":\"\",\"stringcutoff\":\"10000\",\"token\":23,\"typeformats\":{},\"watchers\":[]})\n"
>~"result={token=\"0\",data=[],typeinfo=[],partial=\"0\",counts={},timings=[]}\n"
>23^done
 <Rebuild Watchmodel 1 @ 23:04:43.997 >
sFinished retrieving data


 --- token barrier ---
dNOTE: INFERIOR RUN REQUESTED
sRun requested...
dState changed from InferiorStopOk(14) to InferiorRunRequested(10) [master]
sStep requested...
<24-exec-step
>~"Single stepping until exit from function _start,\nwhich has no line number information.\n"
>24^running
dNOTE: INFERIOR RUN OK
sRunning.
dState changed from InferiorRunRequested(10) to InferiorRunOk(11) [master]
>*running,thread-id="all"
dNOTE: INFERIOR STILL RUNNING IN STATE InferiorRunOk.

>~"\nProgram"
>~" received signal SIGSTOP, Stopped (signal).\n"
>~"0x0000007f870e01c0 in _start () from /lib/ld-linux-aarch64.so.1\n"
>*stopped,reason="signal-received",signal-name="SIGSTOP",signal-meaning="Stopped (signal)",frame={addr="0x0000007f870e01c0",func="_start",args=[],from="/lib/ld-linux-aarch64.so.1"},thread-id="1",stopped-threads="all",core="3"
dNOTE: INFERIOR SPONTANEOUS STOP
sStopped.
dState changed from InferiorRunOk(11) to InferiorStopOk(14) [master]
dHANDLING SIGNAL SIGSTOP
sStopped: Stopped (signal) (Signal SIGSTOP).

>&"p 0\n"
>~"$2 = 0"
>~"\n"
>^done

<25-thread-info
>25^done,threads=[{id="1",target-id="process 23121",name="test2",frame={level="0",addr="0x0000007f870e01c0",func="_start",args=[],from="/lib/ld-linux-aarch64.so.1"},state="stopped",core="3"}],current-thread-id="1"
<26python theDumper.fetchStack({"limit":20,"nativemixed":0,"token":26})

>&"python theDumper.fetchStack({\"limit\":20,\"nativemixed\":0,\"token\":26})\n"
>~"result={token=\"0\",stack={frames=[frame={level=\"0\",address=\"0x7f870e01c0\",function=\"_start\",file=\"\",line=\"0\",module=\"\",language=\"c\"}frame={level=\"1\",address=\"0x0\",function=\"??\",file=\"\",line=\"0\",module=\"\",language=\"c\"}].report}}\n"
>26^done
<27set disassembly-flavor att
<28-interpreter-exec console "disassemble /rm 0x7f870e01c0"
<29-stack-select-frame 0
<30python theDumper.fetchVariables({"autoderef":1,"context":"","displaystringlimit":"100","dyntype":1,"expanded":["return","inspect","local","watch"],"fancy":1,"formats":{},"nativemixed":0,"partialvar":"","passexceptions":0,"qobjectnames":1,"resultvarname":"","stringcutoff":"10000","token":30,"typeformats":{},"watchers":[]})

>&"set disassembly-flavor att\n"
>&"No symbol \"disassembly\" in current context.\n"
>27^error,msg="No symbol \"disassembly\" in current context."

>~"Dump of assembler code for function _start:\n"
>~"=> 0x0000007f870e01c0 <+0>:\te0 03 00 91\tmov\tx0, sp\n"
>~"   0x0000007f870e01c4 <+4>:\te3 01 00 94\tbl\t0x7f870e0950 <_dl_start>\n"
>~"   0x0000007f870e01c8 <+8>:\tf5 03 00 aa\tmov\tx21, x0\n"
>~"End of assembler dump.\n"
>28^done

>29^done

>&"python theDumper.fetchVariables({\"autoderef\":1,\"context\":\"\",\"displaystringlimit\":\"100\",\"dyntype\":1,\"expanded\":[\"return\",\"inspect\",\"local\",\"watch\"],\"fancy\":1,\"formats\":{},\"nativemixed\":0,\"partialvar\":\"\",\"passexceptions\":0,\"qobjectnames\":1,\"resultvarname\":\"\",\"stringcutoff\":\"10000\",\"token\":30,\"typeformats\":{},\"watchers\":[]})\n"
>~"result={token=\"0\",data=[],typeinfo=[],partial=\"0\",counts={},timings=[]}\n"
>30^done
 <Rebuild Watchmodel 2 @ 23:05:45.340 [61343ms] >
sFinished retrieving data

[Shane00]

@aha_1980 I also tried to entirely reinstall qt creator and gdb by using apt-get purge,remove, auto-remove before installing again

[aha_1980]

Hi @Shane00,

sorry, I cannot help here further.

I suggest to ask on the Qt Creator mailing list, the developers reside there.

Best regards

[hwd8868]

@Shane00 hello, did you solve this problem？

[Nick521]

@hwd8868 I had the same problem. Manually adding opencvtypes.py file into /usr/share/qtcreator/debugger/ resolved the problem

[MaurizioB]

I had the same problem. [Solved]
Qt version 6.4.3 and Qt Creator 11.0.2 on Ubuntu 22.04 running in a VMware virtual machine.

The error happens when switching to the system terminal window (console application under Linux) right after the launch of the debugging session.

In my case opencvtypes.py was already in place.

In Edit -> Preferences -> Environment -> System parameter 'Terminal' was set to: /usr/bin/x-terminal-emulator by default and its sub-parameter Command line arguments used for "Run in terminal" was set to -e again by default.

I tried to change the -e parameter with no success, but when returned to the default values the problem was vanished.