OpenCV gving error “ASSERT: ”false“ in file qasciikey.cpp, line 495” on multiple windows










0















I am trying to use multiple OpenCV windows in python on my Jetson TX2. However, I get the error: "ASSERT: "false" in file qasciikey.cpp, line 495"



Below is the minimum reproducible code:



import cv2
import numpy as np

img1=np.random.randn(300,400)
img2=np.random.randn(600,400)

cv2.imshow('win1', img1)
cv2.imshow('win2', img2)


And here is the error trace:



Could not initialize OpenGL for RasterGLSurface, reverting to RasterSurface.
QXcbConnection: XCB error: 145 (Unknown), sequence: 164, resource id: 0, major code: 139 (Unknown), minor code: 20
Could not initialize OpenGL for RasterGLSurface, reverting to RasterSurface.
ASSERT: "false" in file qasciikey.cpp, line 495
Aborted (core dumped)


Please help. Thanks!



EDIT:
The error only happens when I ssh into the Jetson (via MobaXterm v10.5). If I run the code directly from the Jetson, I do not get this error.










share|improve this question




























    0















    I am trying to use multiple OpenCV windows in python on my Jetson TX2. However, I get the error: "ASSERT: "false" in file qasciikey.cpp, line 495"



    Below is the minimum reproducible code:



    import cv2
    import numpy as np

    img1=np.random.randn(300,400)
    img2=np.random.randn(600,400)

    cv2.imshow('win1', img1)
    cv2.imshow('win2', img2)


    And here is the error trace:



    Could not initialize OpenGL for RasterGLSurface, reverting to RasterSurface.
    QXcbConnection: XCB error: 145 (Unknown), sequence: 164, resource id: 0, major code: 139 (Unknown), minor code: 20
    Could not initialize OpenGL for RasterGLSurface, reverting to RasterSurface.
    ASSERT: "false" in file qasciikey.cpp, line 495
    Aborted (core dumped)


    Please help. Thanks!



    EDIT:
    The error only happens when I ssh into the Jetson (via MobaXterm v10.5). If I run the code directly from the Jetson, I do not get this error.










    share|improve this question


























      0












      0








      0








      I am trying to use multiple OpenCV windows in python on my Jetson TX2. However, I get the error: "ASSERT: "false" in file qasciikey.cpp, line 495"



      Below is the minimum reproducible code:



      import cv2
      import numpy as np

      img1=np.random.randn(300,400)
      img2=np.random.randn(600,400)

      cv2.imshow('win1', img1)
      cv2.imshow('win2', img2)


      And here is the error trace:



      Could not initialize OpenGL for RasterGLSurface, reverting to RasterSurface.
      QXcbConnection: XCB error: 145 (Unknown), sequence: 164, resource id: 0, major code: 139 (Unknown), minor code: 20
      Could not initialize OpenGL for RasterGLSurface, reverting to RasterSurface.
      ASSERT: "false" in file qasciikey.cpp, line 495
      Aborted (core dumped)


      Please help. Thanks!



      EDIT:
      The error only happens when I ssh into the Jetson (via MobaXterm v10.5). If I run the code directly from the Jetson, I do not get this error.










      share|improve this question
















      I am trying to use multiple OpenCV windows in python on my Jetson TX2. However, I get the error: "ASSERT: "false" in file qasciikey.cpp, line 495"



      Below is the minimum reproducible code:



      import cv2
      import numpy as np

      img1=np.random.randn(300,400)
      img2=np.random.randn(600,400)

      cv2.imshow('win1', img1)
      cv2.imshow('win2', img2)


      And here is the error trace:



      Could not initialize OpenGL for RasterGLSurface, reverting to RasterSurface.
      QXcbConnection: XCB error: 145 (Unknown), sequence: 164, resource id: 0, major code: 139 (Unknown), minor code: 20
      Could not initialize OpenGL for RasterGLSurface, reverting to RasterSurface.
      ASSERT: "false" in file qasciikey.cpp, line 495
      Aborted (core dumped)


      Please help. Thanks!



      EDIT:
      The error only happens when I ssh into the Jetson (via MobaXterm v10.5). If I run the code directly from the Jetson, I do not get this error.







      python opencv opencv3.0 nvidia-jetson






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 14 '18 at 23:17







      DankMasterDan

















      asked Nov 14 '18 at 23:07









      DankMasterDanDankMasterDan

      358218




      358218






















          1 Answer
          1






          active

          oldest

          votes


















          1














          I found that un-checking "Unix-compatible keyboard" in MobaXterm/Settings/X11, with keyboard set to "us" solved this error for me.






          share|improve this answer






















            Your Answer






            StackExchange.ifUsing("editor", function ()
            StackExchange.using("externalEditor", function ()
            StackExchange.using("snippets", function ()
            StackExchange.snippets.init();
            );
            );
            , "code-snippets");

            StackExchange.ready(function()
            var channelOptions =
            tags: "".split(" "),
            id: "1"
            ;
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function()
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled)
            StackExchange.using("snippets", function()
            createEditor();
            );

            else
            createEditor();

            );

            function createEditor()
            StackExchange.prepareEditor(
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: true,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: 10,
            bindNavPrevention: true,
            postfix: "",
            imageUploader:
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            ,
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            );



            );













            draft saved

            draft discarded


















            StackExchange.ready(
            function ()
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53310086%2fopencv-gving-error-assert-false-in-file-qasciikey-cpp-line-495-on-multiple%23new-answer', 'question_page');

            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            1














            I found that un-checking "Unix-compatible keyboard" in MobaXterm/Settings/X11, with keyboard set to "us" solved this error for me.






            share|improve this answer



























              1














              I found that un-checking "Unix-compatible keyboard" in MobaXterm/Settings/X11, with keyboard set to "us" solved this error for me.






              share|improve this answer

























                1












                1








                1







                I found that un-checking "Unix-compatible keyboard" in MobaXterm/Settings/X11, with keyboard set to "us" solved this error for me.






                share|improve this answer













                I found that un-checking "Unix-compatible keyboard" in MobaXterm/Settings/X11, with keyboard set to "us" solved this error for me.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Mar 14 at 13:04









                Aaron O'ConnorAaron O'Connor

                112




                112





























                    draft saved

                    draft discarded
















































                    Thanks for contributing an answer to Stack Overflow!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid


                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.

                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function ()
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53310086%2fopencv-gving-error-assert-false-in-file-qasciikey-cpp-line-495-on-multiple%23new-answer', 'question_page');

                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    Use pre created SQLite database for Android project in kotlin

                    Darth Vader #20

                    Ondo