Created attachment 279787 [details]
bluetoothd debug output

Hi,

I'm not able to pair with my new JBL Bar Studio 2.0 with Bluez 5.50. I put the JBL into pairing mode but it always asks for PIN code and four zeros is not accepted. The error message is:
Failed to pair: org.bluez.Error.AuthenticationFailed

At the same time I can pair Bluez with other devices like my Edimax speakers. My Android 7.1.2 device able to pair/connect with the JBL without issues and does not ask for PIN code.

BT dongle:
Bus 003 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

OS:
Fedora 28 (Bluez 5.50) and OpenWrt v18.06.1 (Bluez 5.49)

# bluetoothctl
[bluetooth]# pairable on
Changing pairable on succeeded
[bluetooth]# discoverable on
Changing discoverable on succeeded
[bluetooth]# scan on
Discovery started
[...]
[NEW] Device E8:07:BF:25:F5:02 JBL Bar Studio

[bluetooth]# pair E8:07:BF:25:F5:02
Attempting to pair with E8:07:BF:25:F5:02
[CHG] Device E8:07:BF:25:F5:02 Connected: yes
[agent] Enter PIN code: 0000
Failed to pair: org.bluez.Error.AuthenticationFailed
[CHG] Device E8:07:BF:25:F5:02 Connected: no