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Qt 5.8 GUI Application on vncviewer results in segmentation fault


What is a segmentation fault?conky Segmentation fault (core dumped)Locale-gen segmentation faultNAM installation problem in NS2, Segmentation FaultSegmentation fault in aptitudeSegmentation fault when running XFRESCOSegmentation fault (core dumped) when running ideviceactivateEvince produces segmentation faultqt-opensource-linux-x64-5.12.1.run - gives segmentation faultgdebi-gtk Segmentation fault (core dumped)






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0















I'm trying to run a Qt 5.8 GUI application in vncviewer and I'm getting a segmentation fault.



System Configuration



Qt 5.8



Ubuntu 17.04



vncserver




Xvnc Free Edition 4.1.1 - built Feb 25 2015 23:02:21




vncviewer




TigerVNC Viewer 64-bit v1.7.0




VNC xstartup script contents:



#!/bin/sh

export XKL_XMODMAP_DISABLE=1
unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS

xfce4-panel &
xfsettingsd &
xfwm4 &
xfdesktop &
pcmanfm &
xfce4-terminal &


Error Message:



$ ./MyApp 
QXcbConnection: Failed to initialize XRandr
Segmentation fault (core dumped)


Core Dump
Note: Had to change some paths, app names, and omissions for brevity.



(gdb) run
Starting program: $HOME/MyApp
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe2023700 (LWP 5917)]
QXcbConnection: Failed to initialize XRandr
[New Thread 0x7fffd5cbc700 (LWP 5918)]
...
[omitted for brevity]
...
[New Thread 0x7fff6b32a700 (LWP 5945)]

Thread 23 "Chrome_InProcGp" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fff8d7fa700 (LWP 5942)]
0x00007ffff081abba in ?? () from /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5

(gdb) bt
#0 0x00007ffff081abba in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#1 0x00007ffff081b4bc in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#2 0x00007ffff1a51d54 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#3 0x00007ffff1a54478 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#4 0x00007ffff1a55589 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#5 0x00007ffff1a4ffd0 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#6 0x00007ffff1a5024e in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#7 0x00007ffff1a50969 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#8 0x00007ffff1a51225 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#9 0x00007ffff1a512f3 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#10 0x00007ffff19f725d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#11 0x00007ffff19a5dbe in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#12 0x00007ffff19a694d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#13 0x00007ffff19a6c1b in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#14 0x00007ffff19a8559 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#15 0x00007ffff19bb18a in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#16 0x00007ffff19d0c05 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#17 0x00007ffff19d0de7 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#18 0x00007ffff19cd76d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
#19 0x00007ffff7bc06da in start_thread (arg=0x7fff8d7fa700) at pthread_create.c:456
#20 0x00007fffef6aad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105


This only happens in vncviewer of remote desktop. On the local system it runs as expected.



Please let me know if there are any workarounds.










share|improve this question







New contributor




Ankur Shah is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.



























    0















    I'm trying to run a Qt 5.8 GUI application in vncviewer and I'm getting a segmentation fault.



    System Configuration



    Qt 5.8



    Ubuntu 17.04



    vncserver




    Xvnc Free Edition 4.1.1 - built Feb 25 2015 23:02:21




    vncviewer




    TigerVNC Viewer 64-bit v1.7.0




    VNC xstartup script contents:



    #!/bin/sh

    export XKL_XMODMAP_DISABLE=1
    unset SESSION_MANAGER
    unset DBUS_SESSION_BUS_ADDRESS

    xfce4-panel &
    xfsettingsd &
    xfwm4 &
    xfdesktop &
    pcmanfm &
    xfce4-terminal &


    Error Message:



    $ ./MyApp 
    QXcbConnection: Failed to initialize XRandr
    Segmentation fault (core dumped)


    Core Dump
    Note: Had to change some paths, app names, and omissions for brevity.



    (gdb) run
    Starting program: $HOME/MyApp
    [Thread debugging using libthread_db enabled]
    Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
    [New Thread 0x7fffe2023700 (LWP 5917)]
    QXcbConnection: Failed to initialize XRandr
    [New Thread 0x7fffd5cbc700 (LWP 5918)]
    ...
    [omitted for brevity]
    ...
    [New Thread 0x7fff6b32a700 (LWP 5945)]

    Thread 23 "Chrome_InProcGp" received signal SIGSEGV, Segmentation fault.
    [Switching to Thread 0x7fff8d7fa700 (LWP 5942)]
    0x00007ffff081abba in ?? () from /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5

    (gdb) bt
    #0 0x00007ffff081abba in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #1 0x00007ffff081b4bc in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #2 0x00007ffff1a51d54 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #3 0x00007ffff1a54478 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #4 0x00007ffff1a55589 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #5 0x00007ffff1a4ffd0 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #6 0x00007ffff1a5024e in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #7 0x00007ffff1a50969 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #8 0x00007ffff1a51225 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #9 0x00007ffff1a512f3 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #10 0x00007ffff19f725d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #11 0x00007ffff19a5dbe in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #12 0x00007ffff19a694d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #13 0x00007ffff19a6c1b in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #14 0x00007ffff19a8559 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #15 0x00007ffff19bb18a in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #16 0x00007ffff19d0c05 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #17 0x00007ffff19d0de7 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #18 0x00007ffff19cd76d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
    #19 0x00007ffff7bc06da in start_thread (arg=0x7fff8d7fa700) at pthread_create.c:456
    #20 0x00007fffef6aad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105


    This only happens in vncviewer of remote desktop. On the local system it runs as expected.



    Please let me know if there are any workarounds.










    share|improve this question







    New contributor




    Ankur Shah is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      0












      0








      0








      I'm trying to run a Qt 5.8 GUI application in vncviewer and I'm getting a segmentation fault.



      System Configuration



      Qt 5.8



      Ubuntu 17.04



      vncserver




      Xvnc Free Edition 4.1.1 - built Feb 25 2015 23:02:21




      vncviewer




      TigerVNC Viewer 64-bit v1.7.0




      VNC xstartup script contents:



      #!/bin/sh

      export XKL_XMODMAP_DISABLE=1
      unset SESSION_MANAGER
      unset DBUS_SESSION_BUS_ADDRESS

      xfce4-panel &
      xfsettingsd &
      xfwm4 &
      xfdesktop &
      pcmanfm &
      xfce4-terminal &


      Error Message:



      $ ./MyApp 
      QXcbConnection: Failed to initialize XRandr
      Segmentation fault (core dumped)


      Core Dump
      Note: Had to change some paths, app names, and omissions for brevity.



      (gdb) run
      Starting program: $HOME/MyApp
      [Thread debugging using libthread_db enabled]
      Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
      [New Thread 0x7fffe2023700 (LWP 5917)]
      QXcbConnection: Failed to initialize XRandr
      [New Thread 0x7fffd5cbc700 (LWP 5918)]
      ...
      [omitted for brevity]
      ...
      [New Thread 0x7fff6b32a700 (LWP 5945)]

      Thread 23 "Chrome_InProcGp" received signal SIGSEGV, Segmentation fault.
      [Switching to Thread 0x7fff8d7fa700 (LWP 5942)]
      0x00007ffff081abba in ?? () from /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5

      (gdb) bt
      #0 0x00007ffff081abba in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #1 0x00007ffff081b4bc in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #2 0x00007ffff1a51d54 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #3 0x00007ffff1a54478 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #4 0x00007ffff1a55589 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #5 0x00007ffff1a4ffd0 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #6 0x00007ffff1a5024e in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #7 0x00007ffff1a50969 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #8 0x00007ffff1a51225 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #9 0x00007ffff1a512f3 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #10 0x00007ffff19f725d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #11 0x00007ffff19a5dbe in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #12 0x00007ffff19a694d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #13 0x00007ffff19a6c1b in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #14 0x00007ffff19a8559 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #15 0x00007ffff19bb18a in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #16 0x00007ffff19d0c05 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #17 0x00007ffff19d0de7 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #18 0x00007ffff19cd76d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #19 0x00007ffff7bc06da in start_thread (arg=0x7fff8d7fa700) at pthread_create.c:456
      #20 0x00007fffef6aad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105


      This only happens in vncviewer of remote desktop. On the local system it runs as expected.



      Please let me know if there are any workarounds.










      share|improve this question







      New contributor




      Ankur Shah is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I'm trying to run a Qt 5.8 GUI application in vncviewer and I'm getting a segmentation fault.



      System Configuration



      Qt 5.8



      Ubuntu 17.04



      vncserver




      Xvnc Free Edition 4.1.1 - built Feb 25 2015 23:02:21




      vncviewer




      TigerVNC Viewer 64-bit v1.7.0




      VNC xstartup script contents:



      #!/bin/sh

      export XKL_XMODMAP_DISABLE=1
      unset SESSION_MANAGER
      unset DBUS_SESSION_BUS_ADDRESS

      xfce4-panel &
      xfsettingsd &
      xfwm4 &
      xfdesktop &
      pcmanfm &
      xfce4-terminal &


      Error Message:



      $ ./MyApp 
      QXcbConnection: Failed to initialize XRandr
      Segmentation fault (core dumped)


      Core Dump
      Note: Had to change some paths, app names, and omissions for brevity.



      (gdb) run
      Starting program: $HOME/MyApp
      [Thread debugging using libthread_db enabled]
      Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
      [New Thread 0x7fffe2023700 (LWP 5917)]
      QXcbConnection: Failed to initialize XRandr
      [New Thread 0x7fffd5cbc700 (LWP 5918)]
      ...
      [omitted for brevity]
      ...
      [New Thread 0x7fff6b32a700 (LWP 5945)]

      Thread 23 "Chrome_InProcGp" received signal SIGSEGV, Segmentation fault.
      [Switching to Thread 0x7fff8d7fa700 (LWP 5942)]
      0x00007ffff081abba in ?? () from /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5

      (gdb) bt
      #0 0x00007ffff081abba in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #1 0x00007ffff081b4bc in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #2 0x00007ffff1a51d54 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #3 0x00007ffff1a54478 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #4 0x00007ffff1a55589 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #5 0x00007ffff1a4ffd0 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #6 0x00007ffff1a5024e in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #7 0x00007ffff1a50969 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #8 0x00007ffff1a51225 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #9 0x00007ffff1a512f3 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #10 0x00007ffff19f725d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #11 0x00007ffff19a5dbe in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #12 0x00007ffff19a694d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #13 0x00007ffff19a6c1b in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #14 0x00007ffff19a8559 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #15 0x00007ffff19bb18a in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #16 0x00007ffff19d0c05 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #17 0x00007ffff19d0de7 in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #18 0x00007ffff19cd76d in () at /opt/Qt5.8.0/5.8/gcc_64/lib/libQt5WebEngineCore.so.5
      #19 0x00007ffff7bc06da in start_thread (arg=0x7fff8d7fa700) at pthread_create.c:456
      #20 0x00007fffef6aad7f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105


      This only happens in vncviewer of remote desktop. On the local system it runs as expected.



      Please let me know if there are any workarounds.







      17.04 vnc qt segmentation-fault






      share|improve this question







      New contributor




      Ankur Shah is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question







      New contributor




      Ankur Shah is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question






      New contributor




      Ankur Shah is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked 2 hours ago









      Ankur ShahAnkur Shah

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      New contributor





      Ankur Shah is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






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      Check out our Code of Conduct.






















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