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Date:	Thu, 29 Sep 2011 21:52:30 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-bluetooth@...r.kernel.org, linux-wireless@...r.kernel.org,
	Keith Packard <keithp@...thp.com>,
	Waldemar Rymarkiewicz <waldemar.rymarkiewicz@...to.com>,
	Luiz Augusto von Dentz <luiz.von.dentz@...el.com>,
	Ilia Kolomisnky <ilia.kolominsky@...il.com>
Subject: Re: Bluetooth regression with headphones

On 09/29/2011 01:01 PM, Gustavo Padovan wrote:
> Hi Jeremy,
>
> * Jeremy Fitzhardinge <jeremy@...p.org> [2011-09-29 10:47:37 -0700]:
>
>> On 09/16/2011 03:38 PM, Jeremy Fitzhardinge wrote:
>>> On 09/16/2011 03:33 PM, Jeremy Fitzhardinge wrote:
>>>> On 09/12/2011 06:33 PM, Jeremy Fitzhardinge wrote:
>>>>> Hi all,
>>>>>
>>>>> I reported a regression in connecting my Nokia BH-905i headphones in
>>>>> June this year (https://lkml.org/lkml/2011/6/23/770), which was the same
>>>>> problem Keith Packard reported in https://lkml.org/lkml/2011/6/9/63.  
>>>>> It was briefly fixed in
>>>>> git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-2.6.git.
>>>>>
>>>>> Unfortunately it regressed again by the time of the linux-3.0 release,
>>>>> to something with similar symptoms: the headphones won't reliably
>>>>> connect to my laptop unless I freshly re-pair them.  However, unlike the
>>>>> original bug, they will very occasionally connect normally, though I
>>>>> don't know why.
>>>>>
>>>>> This behaviour has been consistent since 3.0 up until the current
>>>>> 3.1-rc6 kernel.
>>>>>
>>>>> What further information can I provide?  How can I help debug this?
>>>> I turned on debugging by running "bluetoothd -n -d", and got the
>>>> following when trying to connect my headphones:
>>>>
>>>> Sep 16 15:30:47 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:headset_set_state() State changed /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: HEADSET_STATE_DISCONNECTED -> HEADSET_STATE_CONNECTING
>>>> Sep 16 15:30:47 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>>> Sep 16 15:30:47 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:remote_features_information() hci0 status 0
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:remote_name_information() hci0 status 0
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:headset_set_channel() Discovered Handsfree service on channel 1
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:rfcomm_connect() /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: Connecting to 00:0B:E4:A6:6C:0D channel 1
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:link_key_request() hci0 dba 00:0B:E4:A6:6C:0D
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:link_key_request() kernel auth requirements = 0x04
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:link_key_request() Matching key found
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:link_key_request() link key type 0x04
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:auth_complete() hci0 status 0
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_bonding_process_complete() status=00
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>>> Sep 16 15:30:48 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_bonding_process_complete() no pending auth request
>>>> Sep 16 15:30:50 saboo bluetoothd[22025]: bluetoothd[22025]: Permission denied (13)
>>>> Sep 16 15:30:50 saboo bluetoothd[22025]: Permission denied (13)
>>>> Sep 16 15:30:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:headset_set_state() State changed /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: HEADSET_STATE_CONNECTING -> HEADSET_STATE_DISCONNECTED
>>>> Sep 16 15:30:50 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>>>
>>> And I get this when I successfully re-pair and connect the headphones:
>>>
>>> Sep 16 15:36:30 saboo bluetoothd[22025]: Discovery session 0x7f1059478630 with :1.326 activated
>>> Sep 16 15:36:30 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:hciops_start_inquiry() hci0 length 8 periodic 1
>>> Sep 16 15:36:30 saboo bluetoothd[22025]: bluetoothd[22025]: Discovery session 0x7f1059478630 with :1.326 activated
>>> Sep 16 15:36:30 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:session_ref() 0x7f1059478630: ref=1
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:session_unref() 0x7f1059478630: ref=0
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:session_remove() Discovery session 0x7f1059478630 with :1.326 deactivated
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:session_remove() Stopping discovery
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:hciops_stop_inquiry() hci0
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: Stopping discovery
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: Stopping discovery
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: Inquiry Failed with status 0x12
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: Inquiry Failed with status 0x12
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_create_device() 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:device_create() Creating device /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:btd_device_ref() 0x7f105947ef70: ref=1
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:bonding_request_new() Requesting bonding for 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:35 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:bonding_request_new() Temporary agent registered for 00:0B:E4:A6:6C:0D at :1.326:/org/bluez/agent/wizard
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:remote_features_information() hci0 status 0
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:remote_name_information() hci0 status 0
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:link_key_request() hci0 dba 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:link_key_request() kernel auth requirements = 0x03
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:link_key_request() Matching key not found
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:io_capa_request() hci0 IO capability request for 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:hciops_get_auth_info() hci0 dba 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_get_io_cap() initial authentication requirement is 0x03
>>> Sep 16 15:36:42 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_get_io_cap() final authentication requirement is 0x03
>>> Sep 16 15:36:44 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:io_capa_response() hci0 IO capability response from 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:44 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:user_confirm_request() hci0
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:hciops_get_auth_info() hci0 dba 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_user_confirm() confirm IO capabilities are 0x01
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_user_confirm() confirm authentication requirement is 0x03
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_user_confirm() remote IO capabilities are 0x03
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_user_confirm() remote authentication requirement is 0x02
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_user_confirm() auto accept of confirmation
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:hciops_confirm_reply() hci0 dba 00:0B:E4:A6:6C:0D success 1
>>> Sep 16 15:36:46 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:device_request_authentication() Requesting agent authentication for 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:simple_pairing_complete() hci0 status 0
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_simple_pairing_complete() status=00
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:link_key_notify() hci0 dba 00:0B:E4:A6:6C:0D type 4
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:hciops_get_auth_info() hci0 dba 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_link_key_notify() key type 0x04 old key type 0xff new key type 0x04
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_link_key_notify() local auth 0x03 and remote auth 0x02
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_link_key_notify() storing link key of type 0x04
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: plugins/hciops.c:auth_complete() hci0 status 0
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/event.c:btd_event_bonding_process_complete() status=00
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:btd_device_ref() 0x7f105947ef70: ref=2
>>> Sep 16 15:36:49 saboo bluetoothd[22025]: bluetoothd[22025]: src/agent.c:agent_release() Releasing agent :1.326, /org/bluez/agent/wizard
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:device_probe_drivers() Probing drivers for 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: serial/manager.c:serial_probe() path /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: 0000111e-0000-1000-8000-00805f9b34fb
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: serial/port.c:create_serial_device() Registered interface org.bluez.Serial on path /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: serial/manager.c:serial_probe() path /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: 00001108-0000-1000-8000-00805f9b34fb
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: input/manager.c:headset_probe() path /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:btd_device_ref() 0x7f105947ef70: ref=3
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: input/device.c:input_device_new() Registered interface org.bluez.Input on path /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: src/adapter.c:adapter_get_device() 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:btd_device_ref() 0x7f105947ef70: ref=4
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/device.c:audio_device_register() Registered interface org.bluez.Audio on path /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/manager.c:handle_uuid() Found Headset record
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:headset_init() Registered interface org.bluez.Headset on path /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/manager.c:handle_uuid() Found Handsfree record
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/manager.c:handle_uuid() Found Audio Sink
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/sink.c:sink_init() Registered interface org.bluez.AudioSink on path /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/manager.c:handle_uuid() Found AV Target
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/control.c:control_init() Registered interface org.bluez.Control on path /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/manager.c:handle_uuid() Found AV Remote
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: src/device.c:btd_device_unref() 0x7f105947ef70: ref=3
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:headset_set_state() State changed /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: HEADSET_STATE_DISCONNECTED -> HEADSET_STATE_CONNECTING
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:headset_set_channel() Discovered Handsfree service on channel 1
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:rfcomm_connect() /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: Connecting to 00:0B:E4:A6:6C:0D channel 1
>>> Sep 16 15:36:50 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:headset_connect_cb() /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: Connected to 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:51 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:handle_event() Received AT+BRSF=25
>>> Sep 16 15:36:51 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:print_hf_features() HFP HF features: "EC and/or NR function" "Voice recognition activation" "Remote volume control"
>>> Sep 16 15:36:51 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:handle_event() Received AT+CIND=?
>>> Sep 16 15:36:51 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:handle_event() Received AT+CIND?
>>> Sep 16 15:36:51 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:handle_event() Received AT+CMER=3, 0, 0, 1
>>> Sep 16 15:36:51 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:event_reporting() Event reporting (CMER): mode=3, ind=1
>>> Sep 16 15:36:51 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:hfp_slc_complete() HFP Service Level Connection established
>>> Sep 16 15:36:51 saboo bluetoothd[22025]: bluetoothd[22025]: audio/telephony.c:telephony_device_connected() telephony-dummy: device 0x7f1059492390 connected
>>> Sep 16 15:36:51 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:headset_set_state() State changed /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: HEADSET_STATE_CONNECTING -> HEADSET_STATE_CONNECTED
>>> Sep 16 15:36:52 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:handle_event() Received AT+VGS=10
>>> Sep 16 15:36:52 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:handle_event() Received AT+VGM=10
>>> Sep 16 15:36:52 saboo bluetoothd[22025]: Badly formated or unrecognized command: AT+CSRSF=1,1,1,1,1,7
>>> Sep 16 15:36:52 saboo bluetoothd[22025]: bluetoothd[22025]: audio/headset.c:handle_event() Received AT+CSRSF=1,1,1,1,1,7
>>> Sep 16 15:36:52 saboo bluetoothd[22025]: bluetoothd[22025]: Badly formated or unrecognized command: AT+CSRSF=1,1,1,1,1,7
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_ref() 0x7f105947b330: ref=2
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_ref() 0x7f105947b330: ref=3
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/sink.c:sink_set_state() State changed /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: SINK_STATE_DISCONNECTED -> SINK_STATE_CONNECTING
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_unref() 0x7f105947b330: ref=2
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_connect_cb() AVDTP: connected signaling channel to 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_connect_cb() AVDTP imtu=672, omtu=895
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/control.c:avctp_set_state() AVCTP Connecting
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:session_cb()
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_parse_resp() DISCOVER request succeeded
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_discover_resp() seid 1 type 1 media 0 in use 0
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_discover_resp() seid 2 type 1 media 0 in use 0
>>> Sep 16 15:36:53 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_discover_resp() seid 4 type 1 media 0 in use 0
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:session_cb()
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_parse_resp() GET_CAPABILITIES request succeeded
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_get_capabilities_resp() seid 1 type 1 media 0
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:session_cb()
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_parse_resp() GET_CAPABILITIES request succeeded
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_get_capabilities_resp() seid 2 type 1 media 0
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:session_cb()
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_parse_resp() GET_CAPABILITIES request succeeded
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_get_capabilities_resp() seid 4 type 1 media 0
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/sink.c:discovery_complete() Discovery complete
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_ref() 0x7f105947b330: ref=3
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:setup_ref() 0x7f105947e3f0: ref=1
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:a2dp_config() a2dp_config: selected SEP 0x7f1059476ad0
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:setup_ref() 0x7f105947e3f0: ref=2
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_set_configuration() 0x7f105947b330: int_seid=1, acp_seid=1
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:setup_unref() 0x7f105947e3f0: ref=1
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:session_cb()
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_parse_resp() SET_CONFIGURATION request succeeded
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:setconf_cfm() Source 0x7f1059476ad0: Set_Configuration_Cfm
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_sep_set_state() stream state changed: IDLE -> CONFIGURED
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/control.c:avctp_connect_cb() AVCTP: connected to 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:54 saboo kernel: [93473.952314] input: 00:0B:E4:A6:6C:0D as /devices/virtual/input/input31
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/control.c:init_uinput() AVRCP: uinput initialized for 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/control.c:avctp_set_state() AVCTP Connected
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:session_cb()
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_parse_resp() OPEN request succeeded
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_connect_cb() AVDTP: connected transport channel to 00:0B:E4:A6:6C:0D
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:handle_transport_connect() sk 29, omtu 895, send buffer size 63488
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:open_cfm() Source 0x7f1059476ad0: Open_Cfm
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/sink.c:stream_setup_complete() Stream successfully created
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:setup_unref() 0x7f105947e3f0: ref=0
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:setup_free() 0x7f105947e3f0
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_unref() 0x7f105947b330: ref=2
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_sep_set_state() stream state changed: CONFIGURED -> OPEN
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/sink.c:sink_set_state() State changed /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: SINK_STATE_CONNECTING -> SINK_STATE_CONNECTED
>>> Sep 16 15:36:54 saboo bluetoothd[22025]: bluetoothd[22025]: audio/unix.c:server_cb() Accepted new client connection on unix socket (fd=30)
>>> Sep 16 15:36:54 saboo rsyslogd-2177: imuxsock begins to drop messages from pid 22025 due to rate-limiting
>>> Sep 16 22:36:54 saboo rtkit-daemon[1543]: Successfully made thread 22178 of process 1866 (/usr/bin/pulseaudio) owned by '500' RT at priority 5.
>>> Sep 16 15:36:55 saboo rsyslogd-2177: imuxsock lost 52 messages from pid 22025 due to rate-limiting
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:session_cb()
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_parse_resp() START request succeeded
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:start_cfm() Source 0x7f1059476ad0: Start_Cfm
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/unix.c:unix_ipc_sendmsg() Audio API: BT_RESPONSE -> BT_START_STREAM
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/unix.c:unix_ipc_sendmsg() Audio API: BT_RESPONSE -> BT_NEW_STREAM
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:setup_unref() 0x7f105947e3f0: ref=0
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/a2dp.c:setup_free() 0x7f105947e3f0
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_unref() 0x7f105947b330: ref=3
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/avdtp.c:avdtp_sep_set_state() stream state changed: OPEN -> STREAMING
>>> Sep 16 15:36:55 saboo bluetoothd[22025]: bluetoothd[22025]: audio/sink.c:sink_set_state() State changed /org/bluez/22025/hci0/dev_00_0B_E4_A6_6C_0D: SINK_STATE_CONNECTED -> SINK_STATE_PLAYING
>>>
>>> Thanks,
>>> 	J
>>
>> I tried to bisect this with inconclusive results.
>>
>> Firstly, it was all working fine up until 13d39315 "Bluetooth: Map
>> sec_level to link key requirements".  This had a couple of known bugs
>> fixed with 6fdf658c "Bluetooth: Fix L2CAP security check" and 33060542
>> "Bluetooth: Fix L2CAP connection establishment".  When I cherry-picked
>> just those onto 13d39315 it all seems to work well again.
>>
>> However, after that, it regresses again, and reconnection gets pretty
>> unreliable.  From bisection of a linearized history of the net/bluetooth
>> changes, it appears that 60b83f57 "Bluetooth: Ignore key unauthenticated
>> for high security" is at least part of the problem, and when I revert it
>> from the bluetooth branch it seems to help; but when I revert it from an
>> overall v3.1 linux.git head, it doesn't, so perhaps something else in
>> there is also causing a problem.
>>
>> It seems clear that all the new stricter enforcement of security stuff
>> is upsetting my headphone's reconnection, but I've reached the limit of
>> how much I can diagnose this without some pointers, because I don't
>> really know anything about bluetooth.
>>
>> How can I help fix this?
> Can you send me the hcidump logs of both the working and not working
> scenarios? It helps a lot find issues.
>

OK, here's some traces.

These were all with a current linux.git tip of tree without rebooting. I
got it to connect several times successfully, which is unusually
frequent (perhaps its timing related and hcidump helped?).

The two failures are once when initiating the connection from the
headphones, and the other from within the gnome3 bluetooth gui.

Thanks,
    J

View attachment "v3.1-successful-disconnect.txt" of type "text/plain" (3201 bytes)

View attachment "v3.1-failed-device-connect.txt" of type "text/plain" (10625 bytes)

View attachment "v3.1-failed-host-connect.txt" of type "text/plain" (6757 bytes)

View attachment "v3.1-successful.txt" of type "text/plain" (30929 bytes)

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