The reason you're not seeing any devices is that your iPhone is still physically connected to your computer while charging, but ejected from iTunes. It's still detected as a physical USB device on the bus, even though you ejected it in iTunes. Calibre sees it and tries to mount it as a device, but fails because it's been ejected.
If you want to see your iPhone in calibre, physically disconnect the iPhone from the computer, then reconnect and run calibre again. If you want to see your Sony, follow the directions I supplied earlier to disable the apple driver, or run calibre with the iPhone physically disconnected. If you want learn more about the apple driver, see the 'Calibre + iPad: Start here' thread.
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