Problem with Paraview
 

I have follow this tutoriels to install OpenFoam and Paraview: http://www.openfoam.org/download/ubuntu.php

When I compile the simplest figure cavity, the surface of my figure isn't smooth. There is like hole and when I move my figure the hole change. There is a picture in the attachment.

Thanks for your help !

A.Danthine

Greetings Danthine and welcome to the forum!

That's a clear indication that the graphics card drivers are not fully compatible with your graphics card.
You need to either install the correct drivers or upgrade your existing ones. Note: on some occasions, instead of upgrading the drivers, you might need to downgrade them.

Best regards,
Bruno

Thanks a lot ! I will check that