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Screen artefact - Qt embedded 4.7.4 on arm platform



  • hello

    I have a strange problem and I don't success to fix it.

    I have two Qt screen program :

    • first is launched as splash screen for wainting system start.
    • second is user application. It close splash screen application by calling kill command (kill -s SIGTERM pid)

    My problem is small black rectangle appears on screen with second application when console message are printed.
    I don't have this problem when I use only one screen application. I have this problem when at least one qt screen application is closed.

    any idea to fix it ?

    remark : I have to put 0 in /sys/class/graphics/fbcon/cursor_blink because a little black rectangle appears in continous. may be it is the same type of bug?

    thanks


  • Lifetime Qt Champion

    Hi and welcome to devnet,

    Out of curiosity, why did you split your application in two ?

    You have a console active that uses your frame buffer so you would need to deactivate it in order to not have any cursor blinking.


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