I recently installed a fresh copy of Ubuntu 15.10 on my laptop. Everything went fine right up to the moment when I had my first system boot. I logged in by typing the password as usual, like in the others previous versions but this time I had nothing to see but my cursor and just the wallpaper. I can t use the system at all, it just freezes at the purple screen. I am using a laptop with an intel pentium dual core processor and 6370m ati graphics card which worked in Trusty Tahr.