so when you put it in your drive and shut it, nothing pops up on your desktop? Have you tried adding an fstab entry like in the old days?
make sure to change /dev/cdrom to whatever your device is and also make sure there's a folder within /media/ and it has proper permissions.
/dev/cdrom /media/cdrom auto ro,noauto,user,exec 0 0
That's all I can suggest, I thought having cdrom/dvd-rom entries in fstab were a thing of the past with the automounting capabilities but if it's not working that my next best guess for a solution