I just recently upgraded from Ubuntu 12.04 to Ubuntu 12.10. I installed the update and tried to boot from the newly installed version. As I booted in it would pop up the loading screen and then I would lose signal and it would say that there was no signal on my monitor. How do I fix this because I really want to use the new version but if it's not going to work I'll just forget about it. I can however boot into the old install and I works fine.