I also have a Lite-on Blu-Ray drive on my core/md hybrid. As far as I remember, I didn't do anything to have it detect when I insert a Blu-Ray disc. However, I only have 1 movie to test with. Unfortunately, Blu-Ray support is pretty bad right now, only discs with the first couple protection methods can be ripped. I've done a fair amount of research, although not in the last month or so. When I get around to it I plan to pull the drive out of the core, slap it in my Linux desktop, then either run Windoze in a VM or dual boot into windows and rip it. Then I'll transcode it to save a little space and copy the movie to my core. Right now, the only reliable Blu-Ray ripping tools are winoze only. Until things change, trying to use Linux for Blu-Ray is almost pointless.
Probably doesn't help with your issue, but it's something to think about.