Hi James, Ward, Adam!

Thanks for your help!

To James: Yes, I've an intel card. I followed many guides.
My card is :
        Identifier "Card0"
        Driver      "intel"
        VendorName "Intel Corporation"
        BoardName   "Mobile 4 Series Chipset Integrated Graphics Controller"
        BusID       "PCI:0:2:0"

To Ward : attached you'll find Xorg.0.log, xorg.conf and lspci.out

To Adam: I tried 'eselect opengl list', but the only answer has been
[1] xorg-x11 *

I'm going to try exa.

Thanks a lot,
Massimiliano