Hi Marcel,
Thanks a lot for sharing valuable information.
On Tue, Jun 28, 2016 at 11:36 PM, Marcel Holtmann <marcel@xxxxxxxxxxxx> wrote:
> Hi Seulki,
>
>> Recently, I have noticed supervision timeout is not enough to pair devices.
>>
>> How can I configure supervision timeout? Is there any configuration file?
>>
>> First, I have checked "main.conf" but I couldn't find any related properties.
>> I also found /sys/kernel/debug/bluetooth/hci0 has a bunch of system settings.
>> But I am not sure editing those files is a right approach.
>
> the supervision timeout will trigger if the baseband will not even ack packets. A longer timeout is most likely not going to help you either to pair. Why do you think it would?
>
> Can you provide btmon traces to see why a disconnect is happening?
>
> Regards
>
> Marcel
>
1. I thought Supervision timeout was setting up too short like below. (420msec)
< HCI Command: LE Create Connection (0x08|0x000d) plen 25 [hci0] 1360.262067
Scan interval: 60.000 msec (0x0060)
Scan window: 30.000 msec (0x0030)
Filter policy: White list is not used (0x00)
Peer address type: Public (0x00)
Peer address: 00:22:D0:8D:22:6D (Polar Electro Oy)
Own address type: Public (0x00)
Min connection interval: 50.00 msec (0x0028)
Max connection interval: 70.00 msec (0x0038)
Connection latency: 0x0000
Supervision timeout: 420 msec (0x002a)
Min connection length: 0.000 msec (0x0000)
Max connection length: 0.000 msec (0x0000)
2. I found Attribute Not Found error message which had not been noticed before.
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1363.521878
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000e-0x000f
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.591184
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1363.660998
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000e
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 9 [hci0] 1363.661926
ATT: Find Information Request (0x04) len 4
Handle range: 0x000f-0x000f
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.730944
Num handles: 1
Handle: 128
Count: 1
3. Because of Connection Timeout message, I suspected supervision timeout.
> HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 1364.131002
Status: Success (0x00)
Handle: 128
Reason: Connection Timeout (0x08)
@ Device Disconnected: 00:22:D0:8D:22:6D (1) reason 1
4. I attached full hci dump.
5. Version information:
Fedora release 22 (Twenty Two)
Kernel 4.1.15-00035-gd1a75bb on an armv7l (ttyAMA3)
[root@localhost ~]# bluetoothctl -v
5.39
Thanks,
Seulki
< HCI Command: LE Create Connection (0x08|0x000d) plen 25 [hci0] 1360.262067
Scan interval: 60.000 msec (0x0060)
Scan window: 30.000 msec (0x0030)
Filter policy: White list is not used (0x00)
Peer address type: Public (0x00)
Peer address: 00:22:D0:8D:22:6D (Polar Electro Oy)
Own address type: Public (0x00)
Min connection interval: 50.00 msec (0x0028)
Max connection interval: 70.00 msec (0x0038)
Connection latency: 0x0000
Supervision timeout: 420 msec (0x002a)
Min connection length: 0.000 msec (0x0000)
Max connection length: 0.000 msec (0x0000)
> HCI Event: Command Status (0x0f) plen 4 [hci0] 1360.281019
LE Create Connection (0x08|0x000d) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 19 [hci0] 1360.291040
LE Connection Complete (0x01)
Status: Success (0x00)
Handle: 128
Role: Master (0x00)
Peer address type: Public (0x00)
Peer address: 00:22:D0:8D:22:6D (Polar Electro Oy)
Connection interval: 67.50 msec (0x0036)
Connection latency: 0.00 msec (0x0000)
Supervision timeout: 420 msec (0x002a)
Master clock accuracy: 0x01
< HCI Command: LE Read Remote Used F.. (0x08|0x0016) plen 2 [hci0] 1360.291734
Handle: 128
@ Device Connected: 00:22:D0:8D:22:6D (1) flags 0x0000
> HCI Event: Command Status (0x0f) plen 4 [hci0] 1360.311306
LE Read Remote Used Features (0x08|0x0016) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 12 [hci0] 1360.551105
LE Read Remote Used Features (0x04)
Status: Success (0x00)
Handle: 128
Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
LE Encryption
< ACL Data TX: Handle 128 flags 0x00 dlen 7 [hci0] 1360.580324
ATT: Exchange MTU Request (0x02) len 2
Client RX MTU: 517
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1360.960945
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 7 [hci0] 1360.971065
ATT: Exchange MTU Response (0x03) len 2
Server RX MTU: 23
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1360.971966
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] 1361.031002
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 24 [hci0] 1361.091078
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: 0x0010-0x0015
UUID: Heart Rate (0x180d)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.091971
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0016-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.160941
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 18 [hci0] 1361.230942
ATT: Read By Group Type Response (0x11) len 13
Attribute data length: 6
Attribute group list: 2 entries
Handle range: 0x0016-0x0024
UUID: Device Information (0x180a)
Handle range: 0x0025-0x0027
UUID: Battery Service (0x180f)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.231805
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0028-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.430855
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 26 [hci0] 1361.501505
ATT: Read By Group Type Response (0x11) len 21
Attribute data length: 20
Attribute group list: 1 entry
Handle range: 0x0028-0xffff
UUID: Unknown (6217ff4b-fb31-1140-ad5a-a45545d7ecf3)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.503739
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Secondary Service (0x2801)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.571086
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1361.630877
ATT: Error Response (0x01) len 4
Read By Group Type Request (0x10)
Handle: 0x0001
Error: Unsupported Group Type (0x10)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.631599
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0001-0x000b
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.701485
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1361.771009
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0001
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.771853
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000c-0x000f
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.970949
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1361.981062
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000c
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.981904
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0010-0x0015
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.040940
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1362.110958
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0010
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.111818
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0016-0x0024
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.171004
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1362.240975
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0016
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.241821
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0025-0x0027
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.440869
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1362.511003
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0025
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.511848
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0028-0xffff
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.580974
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1362.650997
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0028
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.651848
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0001-0x000b
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.710952
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 27 [hci0] 1362.921008
ATT: Read By Type Response (0x09) len 22
Attribute data length: 7
Attribute data list: 3 entries
Handle: 0x0002
Value: 0e0300002a
Handle: 0x0004
Value: 020500012a
Handle: 0x0006
Value: 0a0700022a
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.921901
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0007-0x000b
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.980995
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 20 [hci0] 1363.050994
ATT: Read By Type Response (0x09) len 15
Attribute data length: 7
Attribute data list: 2 entries
Handle: 0x0008
Value: 080900032a
Handle: 0x000a
Value: 020b00042a
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1363.051867
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000b-0x000b
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.120946
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1363.250965
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000b
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1363.251843
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000c-0x000f
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.460868
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 13 [hci0] 1363.521125
ATT: Read By Type Response (0x09) len 8
Attribute data length: 7
Attribute data list: 1 entry
Handle: 0x000d
Value: 200e00052a
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1363.521878
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000e-0x000f
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.591184
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1363.660998
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000e
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 9 [hci0] 1363.661926
ATT: Find Information Request (0x04) len 4
Handle range: 0x000f-0x000f
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.730944
Num handles: 1
Handle: 128
Count: 1
> HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 1364.131002
Status: Success (0x00)
Handle: 128
Reason: Connection Timeout (0x08)
@ Device Disconnected: 00:22:D0:8D:22:6D (1) reason 1
