One further observation: I'm noticing that some USB sticks will not properly 'Eject' on those releases that present the problem; whether I select the 'Eject' or 'Unmount' option on the menu of such a device, does not make a difference, in that the device does get unmounted, but the icon will remain visible (in the 'unmounted' state).
On those releases that do properly shut down, 'Eject' on such a device will not only unmount the device, but will also remove its icon from display. One device that shows such errant behaviour, is my 'Alcor Micro Corp. Flash Drive', of which I attach the 'lsusb' details (file 'lsusb_flash.txt'). ** Attachment added: "lsusb_flash.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1618001/+attachment/4731163/+files/lsusb_flash.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1618001 Title: My computer reboots instead of shutting down To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1618001/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs