I just upgraded from 12.04 x64 to 12.10. After reboot I got GRUB > splash screen > Nothing. I can log in by editing the grub command to add "text" then use command line to access the system, but I don't seem to be able to get the display running. I've googled countless messages and most responses centre around reinstalling nvidia-current however this isn't working for me. (also worth mentioning I dont have an nvidia card, its Intel HD 4000 graphics)
I don't really know where to start on this - could someone help me try to find out what is wrong and how to fix it?