Thank you, but the first advice didn't change anything.
But I'm not quite sure anymore if there's something to change or not.
I thought 3d acceleration doesn't work because the fps rate shown while
running glxgears was very low (500 fps) where other people had 2000 fps and
more;
but eventually, 3d acceleration is supported, only my graphic chip is very
weak. I don't know.
Never used windows on it, so I can't compare.
I will carefully read the link you gave me, and, if I feel selfconfident
enough, try the kernel upgrade.
