Sigh. calibre works perfectly well on windows and OS X that actually have working automount solutions. The problem on linux is that automounting at the OS level is broken, inconsistent and for some distros non-existent. Which means that for a distro neutral package like calibre, a generic mount mechanism, that is guaranteed to work, is needed.
If a distro is making a calibre package, then the onus is on them to replace calibre's mount mechanism with something that works with whatever "flavor of the month" automounting solution they are using.