BlueZ 5.43 doesn't find controller; 5.19 did

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First of all, thanks to Luiz and Barry for responding to my emails
yesterday.  I have updated to BlueZ 5.43.  However, now BlueZ no
longer finds my Bluetooth controller.  BlueZ 5.19 did find it.  I'm
running Linux kernel 3.10.49 on a Qualcomm development board; "uname
-a" says:

Linux apq8009 3.10.49-g3c78468 #1 SMP PREEMPT Mon Jan 16 14:50:44 MST
2017 armv7l GNU/Linux

"hcitool dev" displays no devices, nor does the "list" command in bluetoothctl.

Running bluetoothd with the -d and -n options produces:

bluetoothd[1902]: Bluetooth daemon 5.43
bluetoothd[1902]: src/adapter.c:adapter_init() sending read version command
bluetoothd[1902]: Starting SDP server
bluetoothd[1902]: src/sdpd-service.c:register_device_id() Adding
device id record for 0002:1d6b:0246:052b
bluetoothd[1902]: src/plugin.c:plugin_init() Loading builtin plugins
bluetoothd[1902]: src/plugin.c:add_plugin() Loading hostname plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading wiimote plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading autopair plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading policy plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading a2dp plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading avrcp plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading network plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading input plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading hog plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading gap plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading scanparam plugin
bluetoothd[1902]: src/plugin.c:add_plugin() Loading deviceinfo plugin
bluetoothd[1902]: src/plugin.c:plugin_init() Loading plugins
/usr/lib/bluetooth/plugins
bluetoothd[1902]: profiles/input/suspend-none.c:suspend_init()
bluetoothd[1902]: profiles/network/manager.c:read_config()
/etc/bluetooth/network.conf: Key file does not have key
'DisableSecurity'
bluetoothd[1902]: profiles/network/manager.c:read_config() Config
options: Security=true
bluetoothd[1902]: Failed to open RFKILL control device
bluetoothd[1902]: src/main.c:main() Entering main loop
bluetoothd[1902]: Bluetooth management interface 1.3 initialized
bluetoothd[1902]: src/adapter.c:read_version_complete() sending read
supported commands command
bluetoothd[1902]: src/adapter.c:read_version_complete() sending read
index list command
bluetoothd[1902]: src/adapter.c:read_commands_complete() Number of commands: 38
bluetoothd[1902]: src/adapter.c:read_commands_complete() Number of events: 21
bluetoothd[1902]: src/adapter.c:read_index_list_complete() Number of
controllers: 0

Grepping dmesg for "blue" produces:

[    0.408223] Bluetooth: Core ver 2.16
[    0.408287] Bluetooth: HCI device and connection manager initialized
[    0.408303] Bluetooth: HCI socket layer initialized
[    0.408318] Bluetooth: L2CAP socket layer initialized
[    0.408394] Bluetooth: SCO socket layer initialized
[    6.175305] Bluetooth: RFCOMM TTY layer initialized
[    6.175348] Bluetooth: RFCOMM socket layer initialized
[    6.175355] Bluetooth: RFCOMM ver 1.11
[    6.175363] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    6.175369] Bluetooth: BNEP filters: protocol multicast
[    6.175386] Bluetooth: BNEP socket layer initialized
[    6.175394] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[    6.175409] Bluetooth: HIDP socket layer initialized

Is there something I need to configure so that Bluez 5.43 finds my
controller?  Thanks!

- Dave
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