$ sudo hcitool scan
Device is not available: No such device
tail /var/log/messages
Feb 11 18:37:47 ubuntu kernel: [ 613.169622] usb 3-2: new full speed USB device using uhci_hcd and address 2
Feb 11 18:37:47 ubuntu kernel: [ 613.729268] usb 3-2: new full speed USB device using uhci_hcd and address 3
Feb 11 18:37:48 ubuntu kernel: [ 614.288937] usb 3-2: new full speed USB device using uhci_hcd and address 4
Feb 11 18:37:49 ubuntu kernel: [ 614.808621] usb 3-2: new full speed USB device using uhci_hcd and address 5
tail /var/log/dmesg
(nothing after I plugged in the BT adapter)
$ sudo hcitool scan
Device is not available: No such device
tail /var/log/messages
Feb 11 18:37:47 ubuntu kernel: [ 613.169622] usb 3-2: new full speed USB device using uhci_hcd and address 2
Feb 11 18:37:47 ubuntu kernel: [ 613.729268] usb 3-2: new full speed USB device using uhci_hcd and address 3
Feb 11 18:37:48 ubuntu kernel: [ 614.288937] usb 3-2: new full speed USB device using uhci_hcd and address 4
Feb 11 18:37:49 ubuntu kernel: [ 614.808621] usb 3-2: new full speed USB device using uhci_hcd and address 5
tail /var/log/dmesg
(nothing after I plugged in the BT adapter)