Buffers have not been created error about javacv HOT 5 CLOSED

Yeah, that seems to be an issue with BufferStrategy in Java.. I am not sure 
what causes it, but it never made my program crash or work incorrectly. Does 
your program not work when that message appears?

Actually, it freezes when the error occur. Disabling the instruction 
"canvasFrame.showImage(image)" make it works fine. Another detail I've noticed 
is that if I wait a low time before compile and run again the program (10 sec 
for example), it works without error. Maybe it's a problem with Garbage 
Collection or something related?

Ah, no, if it freezes it's probably a problem with your video card driver.. 

You can also try to use OpenGL instead of X11 SHM by setting the _JAVA_OPTIONS 
environment variable before executing your program, something like this in bash:
    export _JAVA_OPTIONS="-Dsun.java2d.opengl=True"
or put it in ~/.bashrc and relog in.

Okay, I will try this evening then I will show the results! Thanks for help! :)

Closing this long-standing issue, assuming that OpenGL or a better video driver 
did the trick. Please reopen the issue if that is not the case, thank you.