I installed Ubuntu 12.10 secure remix in dual boot with windows 8. First, Windows didn't launch so I used Repair boot to get it fixed. Then, everything went fine Windows and Ubuntu worked but when I reboot Windows, Ubuntu didn't work and the screen was black or sometimes it twinkles.
Here his my boot summary: http://paste.ubuntu.com/5569240/
I hope someone could find the answer to that because I really missed Ubuntu.