I couldn't read the usb device on my other ubuntu installation. There is
something wrong with the usb device or the filesystem on the device.
** Changed in: gvfs (Ubuntu)
Status: New => Invalid
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Does not detect hotplugged storage device
https://bugs.launchpad.net/bugs/511600
You receive
** Attachment added: "BootDmesg.txt"
http://launchpadlibrarian.net/38303930/BootDmesg.txt
** Attachment added: "CurrentDmesg.txt"
http://launchpadlibrarian.net/38303931/CurrentDmesg.txt
** Attachment added: "DKDisksMonitorLog.txt"
http://launchpadlibrarian.net/38303932/DKDisksMonitorLog