Hi, > -----Ursprüngliche Nachricht----- > Von: Johan Hedberg [mailto:johan.hedberg@xxxxxxxxx] > Gesendet: Dienstag, 9. August 2016 16:32 > An: Kropf Johannes > Cc: linux-bluetooth@xxxxxxxxxxxxxxx > Betreff: Re: 5.41 - Authentication Failed with kernel 4.2.0 > > Hi Johannes, > > Please don't drop the mailing list from the thread (added it back now). > > On Tue, Aug 09, 2016, Kropf Johannes wrote: > > > On Mon, Aug 08, 2016, Kropf Johannes wrote: > > > > we had a problem when attempting to pair low energy devices on > > > > Ubuntu > > > with kernel version 4.2.0-42-generic: > > > > After scanning there always occured an "authentication failed" error. > > > > The devices we tried to pair were a A&D UC-352-BLE weighing scale > > > > and a > > > A&D UA-651BLE blood pressure monitor. > > > > Both devices can be paired on the same machine with the same setup > > > > but > > > with kernel version 3.13.0.92. > > > > Unfortunately the log doesn't give me an idea what the problem is. > > > > > > > > Here is the output using bluetoothctl: > > > > [bluetooth]# pair 5C:31:3E:5E:54:5E Attempting to pair with > > > > 5C:31:3E:5E:54:5E [CHG] Device 5C:31:3E:5E:54:5E Connected: yes > > > > Failed to pair: > > > > org.bluez.Error.AuthenticationFailed > > > > [CHG] Device 5C:31:3E:5E:54:5E Connected: no > > > > > > Did you also have an agent registered? (e.g. "agent KeyboardDisplay" > > > in > > > bluetoothctl) > > Yes, an agent was registered in bluetoothctl with "agent on" > > Ok, good. It shouldn't make a difference for pairings initiated from the local > side, but just in case, did you also issue "default-agent"? > > > > What would give an even better view of what's going on is the HCI logs. > > > You can get those with the btmon tool (found under monitor/ in the > > > BlueZ source tree). > > Here is the output of btmon. Does it mean anything to you? > > .... > > < ACL Data TX: Handle 70 flags 0x00 dlen 11 [hci0] 28.489379 > > ATT: Read By Group Type Request (0x10) len 6 > > Handle range: 0x0018-0xffff > > Attribute group type: Primary Service (0x2800) > > > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] > 28.559451 > > Num handles: 1 > > Handle: 70 > > Count: 1 > > > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] > 28.560451 > > Num handles: 1 > > Handle: 70 > > Count: 1 > > > ACL Data RX: Handle 70 flags 0x02 dlen 6 [hci0] 28.628456 > > SMP: Pairing Failed (0x05) len 1 > > Reason: Confirm value failed (0x04) > > < HCI Command: Disconnect (0x01|0x0006) plen 3 [hci0] 28.628506 > > Handle: 70 > > Reason: Authentication Failure (0x05) > > To me this looks like the remote either rejected the pairing, or something else > went wrong there. It'd help to see the full HCI log, particularly from the > beginning of the SMP session, i.e. including the Pairing Request and Response > PDUs. > > Johan Here is the whole log: > HCI Event: Command Status (0x0f) plen 4 [hci0] 28.080411 LE Create Connection (0x08|0x000d) ncmd 1 Status: Success (0x00) > HCI Event: LE Meta Event (0x3e) plen 19 [hci0] 28.086410 LE Connection Complete (0x01) Status: Success (0x00) Handle: 70 Role: Master (0x00) Peer address type: Public (0x00) Peer address: 5C:31:3E:5E:54:5E (OUI 5C-31-3E) Connection interval: 70.00 msec (0x0038) Connection latency: 0.00 msec (0x0000) Supervision timeout: 420 msec (0x002a) Master clock accuracy: 0x00 < HCI Command: LE Read Remote Used Fea.. (0x08|0x0016) plen 2 [hci0] 28.086498 Handle: 70 @ Device Connected: 5C:31:3E:5E:54:5E (1) flags 0x0000 02 01 05 03 02 1d 18 05 12 40 00 50 00 .........@.P. > HCI Event: Command Status (0x0f) plen 4 [hci0] 28.090427 LE Read Remote Used Features (0x08|0x0016) ncmd 1 Status: Success (0x00) > ACL Data RX: Handle 70 flags 0x02 dlen 6 [hci0] 28.145172 SMP: Security Request (0x0b) len 1 Authentication requirement: Bonding, No MITM, Legacy, No Keypresses (0x01) > HCI Event: LE Meta Event (0x3e) plen 12 [hci0] 28.209459 LE Read Remote Used Features (0x04) Status: Success (0x00) Handle: 70 Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00 LE Encryption < ACL Data TX: Handle 70 flags 0x00 dlen 11 [hci0] 28.209526 SMP: Pairing Request (0x01) len 6 IO capability: NoInputNoOutput (0x03) OOB data: Authentication data not present (0x00) Authentication requirement: Bonding, No MITM, SC, No Keypresses (0x09) Max encryption key size: 16 Initiator key distribution: EncKey Sign LinkKey (0x0d) Responder key distribution: EncKey IdKey Sign LinkKey (0x0f) < ACL Data TX: Handle 70 flags 0x00 dlen 7 [hci0] 28.209934 ATT: Exchange MTU Request (0x02) len 2 Client RX MTU: 517 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 28.278449 Num handles: 1 Handle: 70 Count: 1 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 28.279449 Num handles: 1 Handle: 70 Count: 1 > ACL Data RX: Handle 70 flags 0x02 dlen 11 [hci0] 28.348460 SMP: Pairing Response (0x02) len 6 IO capability: NoInputNoOutput (0x03) OOB data: Authentication data not present (0x00) Authentication requirement: Bonding, No MITM, Legacy, No Keypresses (0x01) Max encryption key size: 16 Initiator key distribution: EncKey Sign (0x05) Responder key distribution: EncKey IdKey Sign (0x07) < ACL Data TX: Handle 70 flags 0x00 dlen 21 [hci0] 28.348510 SMP: Pairing Confirm (0x03) len 16 Confim value: 12bd199ba4739a017395109cfa4621b3 > ACL Data RX: Handle 70 flags 0x02 dlen 7 [hci0] 28.349000 ATT: Exchange MTU Response (0x03) len 2 Server RX MTU: 23 < ACL Data TX: Handle 70 flags 0x00 dlen 11 [hci0] 28.349199 ATT: Read By Group Type Request (0x10) len 6 Handle range: 0x0001-0xffff Attribute group type: Primary Service (0x2800) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 28.419459 Num handles: 1 Handle: 70 Count: 1 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 28.420450 Num handles: 1 Handle: 70 Count: 1 > ACL Data RX: Handle 70 flags 0x02 dlen 21 [hci0] 28.488508 SMP: Pairing Confirm (0x03) len 16 Confim value: 41f5f7a6212356d0eefa268f7994844a < ACL Data TX: Handle 70 flags 0x00 dlen 21 [hci0] 28.488545 SMP: Pairing Random (0x04) len 16 Random value: 4e8d532caf34ab845ff243acf6a0a681 > ACL Data RX: Handle 70 flags 0x02 dlen 24 [hci0] 28.489235 ATT: Read By Group Type Response (0x11) len 19 Attribute data length: 6 Attribute group list: 3 entries Handle range: 0x0001-0x000b UUID: Generic Access Profile (0x1800) Handle range: 0x000c-0x000f UUID: Generic Attribute Profile (0x1801) Handle range: 0x0010-0x0017 UUID: Weight Scale (0x181d) < ACL Data TX: Handle 70 flags 0x00 dlen 11 [hci0] 28.489379 ATT: Read By Group Type Request (0x10) len 6 Handle range: 0x0018-0xffff Attribute group type: Primary Service (0x2800) > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 28.559451 Num handles: 1 Handle: 70 Count: 1 > HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 28.560451 Num handles: 1 Handle: 70 Count: 1 > ACL Data RX: Handle 70 flags 0x02 dlen 6 [hci0] 28.628456 SMP: Pairing Failed (0x05) len 1 Reason: Confirm value failed (0x04) < HCI Command: Disconnect (0x01|0x0006) plen 3 [hci0] 28.628506 Handle: 70 Reason: Authentication Failure (0x05) @ Authentication Failed: 5C:31:3E:5E:54:5E (1) status 0x05 > ACL Data RX: Handle 70 flags 0x02 dlen 18 [hci0] 28.635600 ATT: Read By Group Type Response (0x11) len 13 Attribute data length: 6 Attribute group list: 2 entries Handle range: 0x0018-0x0028 UUID: Device Information (0x180a) Handle range: 0x0029-0x002b UUID: Battery Service (0x180f) > HCI Event: Command Status (0x0f) plen 4 [hci0] 28.639427 Disconnect (0x01|0x0006) ncmd 1 Status: Success (0x00) > HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 28.699449 Status: Success (0x00) Handle: 70 Reason: Connection Terminated By Local Host (0x16) @ Device Disconnected: 5C:31:3E:5E:54:5E (1) reason 2 -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
