Re: Issue: Bluez: Bluetooth Mouse Disconnects Soon After Pairing

Hi Luiz,
Thanks for the input. I tried turning on agent (and various
combinations, such as NoInputNoOutput, default-agent and the exact
steps suggested by you.) I still see similar behavior. The behavior is
similar with Microsoft Disigner Keyboard (for keyboard, I tried with
agent KeyboardOnly and KeyboardDisplay).

Bluetoothctl snippet below

************* begin *************
[bluetooth]# power on
Changing power on succeeded
[bluetooth]# agent on
Agent registered
[bluetooth]# default-agent
Default agent request successful
[bluetooth]# discoverable on
Changing discoverable on succeeded
[CHG] Controller 44:1C:A8:6C:8F:5E Discoverable: yes
[bluetooth]# pairable on
Changing pairable on succeeded
[bluetooth]# scan on
Discovery started
[CHG] Controller 44:1C:A8:6C:8F:5E Discovering: yes
[NEW] Device F5:95:EC:5E:0F:D3 Designer Mouse
[NEW] Device 74:9A:AA:38:11:48 74-9A-AA-38-11-48
[NEW] Device 70:97:AD:98:C7:30 70-97-AD-98-C7-30
[NEW] Device 49:5E:30:B2:A7:59 49-5E-30-B2-A7-59
[NEW] Device 6F:9A:D1:81:6C:A2 6F-9A-D1-81-6C-A2
[NEW] Device F3:26:FB:A7:7B:00 F3-26-FB-A7-7B-00
[bluetooth]# pair F5:95:EC:5E:0F:D3
Attempting to pair with F5:95:EC:5E:0F:D3
[CHG] Device F5:95:EC:5E:0F:D3 Connected: yes
[CHG] Device F5:95:EC:5E:0F:D3 UUIDs: 00001800-0000-1000-8000-00805f9b34fb
[CHG] Device F5:95:EC:5E:0F:D3 UUIDs: 00001801-0000-1000-8000-00805f9b34fb
[CHG] Device F5:95:EC:5E:0F:D3 UUIDs: 0000180a-0000-1000-8000-00805f9b34fb
[CHG] Device F5:95:EC:5E:0F:D3 UUIDs: 0000180f-0000-1000-8000-00805f9b34fb
[CHG] Device F5:95:EC:5E:0F:D3 UUIDs:
00001812-0000-1000-8000-00805f9b34fb  <---  At this point, Bluetooth
Mouse Reports seen here and mouse can be used
[CHG] Device F5:95:EC:5E:0F:D3 Connected: no <--- At this point, Mouse
stops working, btmon shows disconnection
Failed to pair: org.bluez.Error.AuthenticationCanceled
************ end *********************

It is encouraging that you were able to use the same device. Could you
please share which Kernel version and Bluez Version you used? I am on
Kernel 3.18 and Bluez 5.41.
Thanks in advance.
Naveen


On Sun, Sep 11, 2016 at 10:59 AM, Luiz Augusto von Dentz
[off-list ref] wrote:

Hi Naveen,

On Sun, Sep 11, 2016 at 6:06 AM, Naveen Kaje [off-list ref] wrote:

quoted

Hello,
I am seeing a disconnection behavior with Bluetooth mouse (Microsoft
Desginer Mouse). Software Baseline 3.18 based kernel and Bluez 5.41.

The device is discovered with bluetoothctl. The mouse pairs briefly (for
about 30 seconds) and then the host disconnects.
Bluetoothctl error reads Failed to pair:
org.bluez.Error.AuthenticationCanceled

Observations:
1) The time it takes for the mouse to stop working is about 30 seconds
since the pair command. This time is consistent.

2) The btmon report says Reason: Remote User Terminated Connection (0x13),
which I found to be not entirely true.
I hacked the transfport layer (UART) in Kernel to skip sending
disconnection message which resulted in the Mouse device
continuing to send reports even after this point (Observed on btmon).

Bluetoothctl and btmon logs are shown below. What could I be missing?

Thanks in advance for the help.

******************** Bluetoothctl log begin ****************************
[bluetooth]# show
Controller 44:1C:A8:6C:8F:5E
        Name: BTHost
        Alias: BTHost
        Class: 0x000000
        Powered: yes
        Discoverable: no
        Pairable: yes
        UUID: Generic Attribute Profile
(00001801-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control
 (0000110e-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information
(00001200-0000-1000-8000-00805f9b34fb)
        UUID: Generic Access Profile
 (00001800-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target
(0000110c-0000-1000-8000-00805f9b34fb)
        Modalias: usb:v1D6Bp0246d0529
[bluetooth]# discoverable on
Changing discoverable on succeeded
[bluetooth]# pairable on
Changing pairable on succeeded
[bluetooth]# scan on
Discovery started
[CHG] Controller 44:1C:A8:6C:8F:5E Discovering: yes
[NEW] Device F5:95:EC:5D:0F:D3 Designer Mouse
[bluetooth]# pair F5:95:EC:5D:0F:D3
Attempting to pair with F5:95:EC:5D:0F:D3
[CHG] Device F5:95:EC:5D:0F:D3 Connected: yes
[CHG] Device F5:95:EC:5D:0F:D3 UUIDs: 00001800-0000-1000-8000-00805f9b34fb
[CHG] Device F5:95:EC:5D:0F:D3 UUIDs: 00001801-0000-1000-8000-00805f9b34fb
[CHG] Device F5:95:EC:5D:0F:D3 UUIDs: 0000180a-0000-1000-8000-00805f9b34fb
[CHG] Device F5:95:EC:5D:0F:D3 UUIDs: 0000180f-0000-1000-8000-00805f9b34fb
[CHG] Device F5:95:EC:5D:0F:D3 UUIDs: 00001812-0000-1000-8000-00805f9b34fb
[CHG] Device F5:95:EC:5D:0F:D3 Modalias: usb:v045Ep0805d0110
[Designer Mouse]# info
Device F5:95:EC:5D:0F:D3
        Name: Designer Mouse
        Alias: Designer Mouse
        Appearance: 0x03c2
        Icon: input-mouse
        Paired: no
        Trusted: no
        Blocked: no
        Connected: yes
        LegacyPairing: no
        UUID: Generic Access Profile
 (00001800-0000-1000-8000-00805f9b34fb)
        UUID: Generic Attribute Profile
(00001801-0000-1000-8000-00805f9b34fb)
        UUID: Device Information
 (0000180a-0000-1000-8000-00805f9b34fb)
        UUID: Battery Service
(0000180f-0000-1000-8000-00805f9b34fb)
        UUID: Human Interface Device
 (00001812-0000-1000-8000-00805f9b34fb)
        Modalias: usb:v045Ep0805d0110
        RSSI: -91
Failed to pair: org.bluez.Error.AuthenticationCancele--

It doesn't look like you have an agent registered which is probably
why the authentication fails, try with:

quoted

agent on
default-agent

iirc the same mouse used to just work with more recent kernel and
latest userspace.

Luiz Augusto von Dentz