my dell inspiron 4000 has one of those moduler hotswappable cd-rw drives. i'm running xubuntu 8.04 (xfce) and have noticed that the cd drive doesn't mount/become available until i physically unseat/reseat the drive. when i do this, i hear it spin up, read the disc, etc.

what options do i have to allow the machine to just read the disc when i insert it?