I upgraded from ubuntu 13.04 to 13.10 but when i open my laptop it freezes before i can login ant the gnome 3 splash screen. alt ctrl + f(any) not working. the only thing i can do is manualy power off. I tryied everything on recovery mode screen and some stuff about grub (nomodeset quiet splash stuff i found at this forum) but nothing is working. I can't reach tty's to login so i can't reinstall drivers for my ati radeon mobility hd 5xxx. that is my secs http://www.sony.co.uk/support/en/product/VPCEB2E1E_WI/specifications .