Hi François, On Thu, Mar 10, 2016 at 12:15 PM, François Beaufort <beaufort.francois@xxxxxxxxx> wrote: > Here are failing bluetoothd and hcidump logs with BlueZ at commit > c8a81f43921cf417e270f3b6e0b0118cbc27a58d git log c8a81f43921cf417e270f3b6e0b0118cbc27a58d fatal: bad object c8a81f43921cf417e270f3b6e0b0118cbc27a58d Seems like it is not a valid object, is this based on upstream? > http://pastebin.com/raw/i416k6aw I can see the old services being removed and the new one being added: old services: bluetoothd[8323]: src/gatt-client.c:unregister_service() Removing GATT service: /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service0012 bluetoothd[8323]: src/gatt-client.c:unregister_service() Removing GATT service: /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service0016 bluetoothd[8323]: src/gatt-client.c:unregister_service() Removing GATT service: /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service0019 new service: bluetoothd[8323]: src/gatt-client.c:service_create() Exported GATT service: /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service000c bluetoothd[8323]: src/gatt-client.c:characteristic_create() Exported GATT characteristic: /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service000c/char000d bluetoothd[8323]: src/gatt-client.c:characteristic_create() Exported GATT characteristic: /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service000c/char000f bluetoothd[8323]: src/gatt-client.c:descriptor_create() Exported GATT characteristic descriptor: /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service000c/char000f/desc0011 bluetoothd[8323]: src/gatt-client.c:characteristic_create() Exported GATT characteristic: /org/bluez/hci0/dev_F1_6F_DE_EC_F1_D6/service000c/char0012 > http://pastebin.com/raw/5dC9dFiP So it fails here: 2016-03-10 11:11:49.083776 < ACL data: handle 32 flags 0x00 dlen 9 ATT: Write req (0x12) handle 0x000b value 0x02 0x00 2016-03-10 11:11:49.118038 > ACL data: handle 32 flags 0x02 dlen 5 ATT: Write resp (0x13) It is trying to write to handle 0x000b which is not in the range of the new services, in fact is probably the service changed characteristic CCC: bluetoothd[8323]: src/device.c:gatt_debug() start: 0x0008, end: 0x000b, uuid: 00001801-0000-1000-8000-00805f9b34fb That is GATT service: #define GATT_UUID "00001801-0000-1000-8000-00805f9b34fb" So there is nothing in the logs related to the application, it is perhaps something in the above layers, perhaps it could not be detecting the service removal properly. I did a quick test here with zephyr as peripheral and changing services do actually appear in bluetoothctl. -- 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