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Qt Creator crashes when I edit main.cpp

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  • M Offline
    M Offline
    mjsurette
    wrote on last edited by
    #19

    FWIW I'm running Ubuntu 16.04 with no issues on two machines. Nvidia graphics on one Intel on the other.

    I installed Qt with the offline installer at qt.io, not the distribution's version. You might want to try that.

    Mike

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    0
    • WinzW Offline
      WinzW Offline
      Winz
      wrote on last edited by Winz
      #20

      Same problem with Qt5.7.0 off-line installer
      Mint 18 cinnamon 64 bits

      Graphics: Card-1: NVIDIA GF119 [NVS 315] bus-ID: 0f:00.0
      Card-2: NVIDIA GF119 [NVS 315] bus-ID: 28:00.0
      Display Server: X.Org 1.18.3 drivers: nouveau (unloaded: fbdev,vesa)
      Resolution: 1920x1200@59.95hz, 1920x1200@59.95hz, 1280x1024@60.02hz
      GLX Renderer: Gallium 0.4 on NVD9
      GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes

      kernel : 4.4.0-21-generic

      I noticed that the problem is due to the CppEditor plugin. If you uncheck it, it will not crash anymore

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      • S seubri

        Hi all,

        I just installed the Qt framework on my new laptop running Ubuntu 16.04 by using the online Qt Project online install tool. I loaded my project on Qt Creator (version: 4.0.3 based on Qt 5.7.0), everything seems to be working smoothly, except that Qt Creator crashes as soon as I start editing my main.cpp file. Strangely, that seems to only happen for the main.cpp file.

        When I run Qt Creator from the terminal, here is what I can read:
        (when I open my project: )
        SOFT ASSERT: "!binary.isEmpty()" in file /work/build/qt-creator/src/libs/utils/shellcommand.cpp, line 474
        (and as soon as I start editing the main.cpp file: )
        Segmentation fault (core dumped)*

        Anyone can help me fix this?

        T Offline
        T Offline
        Tschikkn
        wrote on last edited by
        #21

        @seubri Can you please show the output of

        lspci -nnk | grep "VGA\|'Kern'\|3D\|Display" -A3
        

        which will show the card and current used kernel-module. If you have an Intel card (no Skylake, but it may also work) you may use UXA instead of SNA.

        Open up a terminal, edit the 20-intel.conf with root-access.

        sudo nano /usr/share/X11/xorg.conf.d/20-intel.conf
        

        Copy and paste following code and insert it:

        Section "Device"
        	Identifier	"Intel Graphics"
        	Driver		"i915"
        	Option		"AccelMethod"  "uxa"
        EndSection
        

        and reboot.
        There are sometimes (often?) problems with the newer SNA-acceleration. UXA is the old one which seems to be more stable.

        @LinuxMint-Users: You are all alone :) Mint is NOT Ubuntu, it is just sharing the base. In some basics, they are equal but I am quite sure that this doesn't match graphics. I do not know what they have changed or edited, so you have to do a research yourself or just try it out.

        S 1 Reply Last reply
        1
        • T Tschikkn

          @seubri Can you please show the output of

          lspci -nnk | grep "VGA\|'Kern'\|3D\|Display" -A3
          

          which will show the card and current used kernel-module. If you have an Intel card (no Skylake, but it may also work) you may use UXA instead of SNA.

          Open up a terminal, edit the 20-intel.conf with root-access.

          sudo nano /usr/share/X11/xorg.conf.d/20-intel.conf
          

          Copy and paste following code and insert it:

          Section "Device"
          	Identifier	"Intel Graphics"
          	Driver		"i915"
          	Option		"AccelMethod"  "uxa"
          EndSection
          

          and reboot.
          There are sometimes (often?) problems with the newer SNA-acceleration. UXA is the old one which seems to be more stable.

          @LinuxMint-Users: You are all alone :) Mint is NOT Ubuntu, it is just sharing the base. In some basics, they are equal but I am quite sure that this doesn't match graphics. I do not know what they have changed or edited, so you have to do a research yourself or just try it out.

          S Offline
          S Offline
          seubri
          wrote on last edited by
          #22

          @Tschikkn Hi, I'm sorry for not answering you sooner. I appreciate you trying to help.

          My problem still remains, and your suggestion did not help, unfortunately. It seemed to make the graphics worse (more unstable).

          Here is the output of lspci -nnk | grep "VGA|'Kern'|3D|Display" -A3:

          00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 530 [8086:191b] (rev 06)
          	DeviceName:  Onboard IGD
          	Subsystem: Dell HD Graphics 530 [1028:06e4]
          	Kernel driver in use: i915
          --
          01:00.0 3D controller [0302]: NVIDIA Corporation GM107M [GeForce GTX 960M] [10de:139b] (rev ff)
          	Kernel modules: nvidiafb, nouveau, nvidia_367, nvidia_367_drm
          02:00.0 Network controller [0280]: Broadcom Limited BCM43602 802.11ac Wireless LAN SoC [14e4:43ba] (rev 01)
          	Subsystem: Dell BCM43602 802.11ac Wireless LAN SoC [1028:0024]
          
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          0
          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #23

            Can you test starting Qt Creator with -noload Welcome as a parameter ?

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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            0
            • A Offline
              A Offline
              aevl
              wrote on last edited by
              #24

              I have the same problem on a Linux Mint 17.2 machine (segmentation fault). I have tried all suggestions and found that the problem s gone when I:

              • run qtcreator as root
                OR
              • remove the cppeditor plugin

              Is there already any solution to this problem?

              jsulmJ 1 Reply Last reply
              0
              • A aevl

                I have the same problem on a Linux Mint 17.2 machine (segmentation fault). I have tried all suggestions and found that the problem s gone when I:

                • run qtcreator as root
                  OR
                • remove the cppeditor plugin

                Is there already any solution to this problem?

                jsulmJ Offline
                jsulmJ Offline
                jsulm
                Lifetime Qt Champion
                wrote on last edited by
                #25

                @aevl So, "-noload Welcome" does not help?

                https://forum.qt.io/topic/113070/qt-code-of-conduct

                1 Reply Last reply
                0
                • mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on last edited by
                  #26

                  Hi
                  We are sitting 6 people on Mint 18.1 and have seen none such issues
                  alt text

                  This is however in a virtual machine so not using a real nvidia driver
                  but VGA compatible controller [0300]: VMware SVGA II Adapter [15ad:0405]
                  ( it can run QML apps/openGL is supported)

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                  0
                  • M Offline
                    M Offline
                    MikeAmadeo
                    wrote on last edited by
                    #27

                    Hi All,

                    Qt 4.2.1 crashes at random times on my Lenovo laptop - once when opening a project, often while simply editing a file.

                    Has anyone found a definitive solution for this?

                    Thanks,

                    ~ Mike

                    1 Reply Last reply
                    0
                    • SGaistS Offline
                      SGaistS Offline
                      SGaist
                      Lifetime Qt Champion
                      wrote on last edited by
                      #28

                      Hi,

                      The most straightforward would be to test a more recent version of Qt Creator, the current is 4.4.

                      Interested in AI ? www.idiap.ch
                      Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                      1 Reply Last reply
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