$ journalctl -fu bluetooth | tee /tmp/bluetooth-multiple-adapters.log
...
<<<< Stop/Start bluetooth service
...
<<<< Insert 2nd USB adapter
Sep 04 23:46:32 hephaestion.lan.iam.tj bluetoothd[23908]: src/rfkill.c:rfkill_event() RFKILL event idx 5 type 2 op 0 soft 0 hard 0
$ hcitool dev
Devices:
hci1 00:10:7A:4D:15:33
hci0 00:1F:3A:E0:0A:AF
$ lsusb
# Built-in (hci0)
Bus 007 Device 003: ID 413c:8126 Dell Computer Corp. Wireless 355 Bluetooth
# Hot-plugged (hci1)
Bus 006 Device 011: ID 0bdb:1002 Ericsson Business Mobile Networks BV Bluetooth Device 1.2
$ cat /etc/systemd/ system/ bluetooth. service service/ bluetooth. service
.include /lib/systemd/
[Service] /usr/lib/ bluetooth/ bluetoothd -d
ExecStart=
$ journalctl -fu bluetooth | tee /tmp/bluetooth- multiple- adapters. log lan.iam. tj bluetoothd[23908]: src/rfkill. c:rfkill_ event() RFKILL event idx 5 type 2 op 0 soft 0 hard 0
...
<<<< Stop/Start bluetooth service
...
<<<< Insert 2nd USB adapter
Sep 04 23:46:32 hephaestion.
$ bluetoothctl lan.iam. tj [default] lan.iam. tj [default]
[NEW] Controller 00:1F:3A:E0:0A:AF hephaestion.
[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 hephaestion.
[CHG] Device 00:07:61:3B:86:98 Connected: yes
$ hcitool dev
Devices:
hci1 00:10:7A:4D:15:33
hci0 00:1F:3A:E0:0A:AF
$ lsusb
# Built-in (hci0)
Bus 007 Device 003: ID 413c:8126 Dell Computer Corp. Wireless 355 Bluetooth
# Hot-plugged (hci1)
Bus 006 Device 011: ID 0bdb:1002 Ericsson Business Mobile Networks BV Bluetooth Device 1.2