I dont know exactly why but its now fixed for me :)
I did:
sudo dpkg-reconfigure -phigh xserver-xorg
sudo nvidia-xconfig (comment: to activate nvidia propietary driver)
mv ~/.mozilla ~/.mozilla.old (comment: firefox artwork was correct but webpages was smaller than normal, after of this all works fine)
I dont know exactly why but its now fixed for me :)
I did:
sudo dpkg-reconfigure -phigh xserver-xorg
sudo nvidia-xconfig (comment: to activate nvidia propietary driver)
mv ~/.mozilla ~/.mozilla.old (comment: firefox artwork was correct but webpages was smaller than normal, after of this all works fine)
And now all works fine for me