Same here. Linux Mint 18.1 64bit Cinnamon Desktop (ubuntu 16.04), Bluetoothctl v5.37.
After I wrote the below forum post I also implemented this udev change which helped somewhat as I have an onboard bluetooth that I wanted to disable after buying a "csr 4.0" usb dongle off of ebay. The GUI worked better, but still no pair: >sudo gedit /etc/udev/rules.d/81-bluetooth-hci.rules SUBSYSTEM=="usb", ATTRS{idVendor}=="0cf3", ATTRS{idProduct}=="3004", ATTR{authorized}="0" Here is the article I posted in a facebook forum with all the gory details: Been unable to use bluetooth for many years and many laptops. Bought a CSR v4.0 dongle off of ebay. >lsusb Bus 003 Device 011: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth >Dongle (HCI mode) Even worse results. In bluetoothctl (skipping the GUI): [bluetooth]# list Controller 00:1A:7D:DA:71:13 GT70-2PE #1 [default] Controller 48:5A:B6:19:7F:30 GT70-2PE #1 is the usb dongle I bought. The other is the built-in Atheros in the laptop. [bluetooth]# power on Changing power on succeeded [bluetooth]# scan on Discovery started [CHG] Controller 00:1A:7D:DA:71:13 Discovering: yes [CHG] Device 48:5A:B6:19:7F:30 RSSI: -64 [CHG] Device 00:07:62:18:3D:C5 RSSI: -51 [bluetooth]# info 00:07:62:18:3D:C5 Device 00:07:62:18:3D:C5 Name: iMT525 Alias: iMT525 Class: 0x240404 Icon: audio-card Paired: no Trusted: no Blocked: no Connected: no LegacyPairing: yes RSSI: -51 I am trying to connect to the iMT525 speaker phone by Altec Lansing. [bluetooth]# pair 00:07:62:18:3D:C5 Attempting to pair with 00:07:62:18:3D:C5 [CHG] Device 00:07:62:18:3D:C5 Connected: yes Failed to pair: org.bluez.Error.AuthenticationRejected [CHG] Device 00:07:62:18:3D:C5 Connected: no Cannot pair though the default pair code is 0000 for a sound device. Any ideas? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1490347 Title: [Regression] 16:04 + 15:10 - Cannot pair with devices using (legacy LMP Link Management Protocol) PIN codes Status in Bluez Utilities: New Status in OEM Priority Project: New Status in OEM Priority Project xenial series: New Status in bluez package in Ubuntu: Triaged Status in bluez source package in Wily: Triaged Status in bluez source package in Xenial: Confirmed Bug description: Bluez 5.3 does not have support for pairing with devices (such as keyboards) that use a PIN code for pairing. A mouse pairs correctly. From my research it seems as if the ChromeOS project developed patches to fix this and they are supposed to have been included in Bluez 5.4 (that statement dated April 2013) but I've not yet identified them. "The agent's implementation in bt_console/bluetoothctl upstream is incomplete, missing some functions like DisplayPincode." https://code.google.com/p/chromium/issues/detail?id=222661 Along with the loss of Headset profiles meaning VoIP applications can no longer use HSP/HFP profiles (requiring functionality yet to land in Ofono) this cripples the use of Bluetooth for much else than A2DP or mouse input. Attempting to pair with, for example, an Apple Wireless Keyboard that pairs and works correctly with 14.04 LTS, fails totally on 15.10. The mouse shown below is already paired, connected, and working. $ bluetoothctl [NEW] Controller 00:1F:3A:E0:0A:AF hephaestion.lan.iam.tj [default] [NEW] Device 00:0A:95:4B:BD:C2 Apple Wireless Keyboard [NEW] Device 00:07:61:3B:86:98 Bluetooth Travel Mouse [bluetooth]# agent on Agent registered [bluetooth]# default-agent Default agent request successful [bluetooth]# scan on Discovery started [CHG] Controller 00:1F:3A:E0:0A:AF Discovering: yes [CHG] Device 00:0A:95:4B:BD:C2 LegacyPairing: yes [CHG] Device 00:0A:95:4B:BD:C2 RSSI: -48 [bluetooth]# pair 00:0A:95:4B:BD:C2 Attempting to pair with 00:0A:95:4B:BD:C2 >>> at this point nothing is happening >>> so I press Enter on the keyboard and... [agent] PIN code: 791166 >>> I type 791166 Enter and ... [agent] PIN code: 237744 >>> I type 237744 Enter and... [agent] PIN code: 358866 >>> I type 358866 Enter and... Request PIN code [agent] Enter PIN code: 1234 >>> I type 1234 Enter on the keyboard and 1234 at the prompt... Failed to pair: org.bluez.Error.AuthenticationFailed This cycle repeats in various permuations. Sometimes the final "Request PIN code" does not appear. To manage notifications about this bug go to: https://bugs.launchpad.net/bluez/+bug/1490347/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp