Re: Bluetooth regression with headphones

[Gustavo Padovan <padovan@profusion.mobi>]

Hi Jeremy,

* Jeremy Fitzhardinge <jeremy@goop.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.

	Gustavo