I just updated to 12.04 on my laptop and now it can't recognize that i have a CDROM. The eject command doesnt work, even if i open it and put a CD in there I hear it spin up but nothing mounts. I can't find the CDROM itself anywhere in /dev
the eject command was always iffy but if i restarted I could eject and I was always able to stick a CD or DVD in and it would mount right up.
can anyone help?

dave@dave-m15x:~$ eject
eject: unable to find or open device for: `cdrom'

thanks.

hardware: Alienware M15x