This looks to be a kernel issue in
net/bluetooth/mgmt.c::read_index_list().  rp->num_controllers, etc., is
set as hci_dev_list is iterated over. Some devices are not added due to
test flags or quirk bits.

I'll check how 'hcitool dev' gathers its list of adapters.

** Changed in: bluez (Ubuntu)
       Status: Triaged => In Progress

** Changed in: bluez (Ubuntu)
     Assignee: (unassigned) => TJ (tj)

** Changed in: bluez (Ubuntu)
   Importance: Undecided => High

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu)
       Status: New => In Progress

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => TJ (tj)

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  15.10: Multiple Bluetooth controllers not found

Status in bluez package in Ubuntu:
  In Progress
Status in linux package in Ubuntu:
  In Progress

Bug description:
  $ hcitool dev
        hci1    00:10:7A:4D:15:33
        hci0    00:1F:3A:E0:0A:AF

  $ hcitool -i hci1 scan
  Scanning ...
        00:0A:95:4B:BD:C2       Apple Wireless Keyboard

  $ sudo systemctl restart bluetooth

  $ journalctl -u bluetooth | grep adapter_service_add 
  Sep 03 19:39:12 bluetoothd[3973]: 
src/adapter.c:adapter_service_add() /org/bluez/hci0

  $ bluetoothctl
  [NEW] Controller 00:1F:3A:E0:0A:AF [default]
  [NEW] Device 00:0A:95:4B:BD:C2 Apple Wireless Keyboard
  [NEW] Device 00:07:61:3B:86:98 Bluetooth Travel Mouse
  [NEW] Device 00:19:15:29:83:14 Think Outside Keyboard
  [bluetooth]# list
  Controller 00:1F:3A:E0:0A:AF [default]

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