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






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      edited Nov 14 '18 at 23:17







      DankMasterDan

















      asked Nov 14 '18 at 23:07









      DankMasterDanDankMasterDan

      358218




      358218






















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






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            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

























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                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



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                answered Mar 14 at 13:04









                Aaron O'ConnorAaron O'Connor

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