Connecting HHKB keyboard by bluetooth on Linux mint

environment

• PC - Panasonic CF-LX6
• OS - NAME="Linux Mint", VERSION="21.2 (Victoria)"
• HHKB
  • Professional HYBRID PD-KB800 (2022)
  • settings
    • 1:off
    • 2:on
    • 3:on
    • 4:off
    • 5:on
    • 6:on

procedure

1. press HHKB power button and hold for 1 sec.
2. press HHKB [Fn] + [Q] key -> be flushing bule LED
3. press HHKB [Fn] + [Control] + [1~4] -> be changed Bluetooth pairing mode
4. open console on Linux PC
5. $ bluetoothctl -> move to bluetooth controll mode.
6. $ power on
7. and more search setting -> see https://www.gwtcenter.com/linux-mint-211-bluetooth-keyboard
8. $ scan on
9. find HHKB-hybrid_1 * last number is 1~4
10. $ trust XX:XX:XX:XX:XX:XX * press keyboard BT address
11. $ pair XX:XX:XX:XX:XX:XX
12. find log such as [agent] PassKey: 999999, and press this number by HHKB.
13. HHKB pairing mode will turn off, and completed BT connecting!