Public bug reported: Starting with kernel 6.5 the external Bluetooth USB dongle based on Realtek stop working.
This issue occurs on either UBuntu 22.04, 23.10 and 24.04 when kernel version is > 6.5. On a lower kernel version it works as we were using it for almost 2 years without issues. Version signature: Ubuntu 6.8.0-22.22-generic 6.8.1 USB bluetooth device: Bus 001 Device 003: ID 0bda:a729 Realtek Semiconductor Corp. Bluetooth Radio ``` $ uname -a Linux bomi-edge 6.8.0-22-generic #22-Ubuntu SMP PREEMPT_DYNAMIC Thu Apr 4 22:30:32 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux ``` ``` $ lsusb | grep -i bluetooth Bus 001 Device 003: ID 0bda:a729 Realtek Semiconductor Corp. Bluetooth Radio ``` Journalctl logs after the OS is starting ``` journalctl -b | egrep -i bluetooth Apr 18 07:16:29 bomi-edge kernel: usb 1-9: Product: Bluetooth Radio Apr 18 07:16:30 bomi-edge kernel: Bluetooth: Core ver 2.22 Apr 18 07:16:30 bomi-edge kernel: NET: Registered PF_BLUETOOTH protocol family Apr 18 07:16:30 bomi-edge kernel: Bluetooth: HCI device and connection manager initialized Apr 18 07:16:30 bomi-edge kernel: Bluetooth: HCI socket layer initialized Apr 18 07:16:30 bomi-edge kernel: Bluetooth: L2CAP socket layer initialized Apr 18 07:16:30 bomi-edge kernel: Bluetooth: SCO socket layer initialized Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000b lmp_ver=0a lmp_subver=8761 Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: rom_version status=0 version=1 Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_fw.bin Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_config.bin Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: cfg_sz 6, total sz 30210 Apr 18 07:16:30 bomi-edge systemd[1]: Reached target bluetooth.target - Bluetooth Support. Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: fw version 0xdfc6d922 root@bomi-edge:/home/edge# journalctl -b | egrep -i bluetooth Apr 18 07:16:29 bomi-edge kernel: usb 1-9: Product: Bluetooth Radio Apr 18 07:16:30 bomi-edge kernel: Bluetooth: Core ver 2.22 Apr 18 07:16:30 bomi-edge kernel: NET: Registered PF_BLUETOOTH protocol family Apr 18 07:16:30 bomi-edge kernel: Bluetooth: HCI device and connection manager initialized Apr 18 07:16:30 bomi-edge kernel: Bluetooth: HCI socket layer initialized Apr 18 07:16:30 bomi-edge kernel: Bluetooth: L2CAP socket layer initialized Apr 18 07:16:30 bomi-edge kernel: Bluetooth: SCO socket layer initialized Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: examining hci_ver=0a hci_rev=000b lmp_ver=0a lmp_subver=8761 Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: rom_version status=0 version=1 Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_fw.bin Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: loading rtl_bt/rtl8761bu_config.bin Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: cfg_sz 6, total sz 30210 Apr 18 07:16:30 bomi-edge systemd[1]: Reached target bluetooth.target - Bluetooth Support. Apr 18 07:16:30 bomi-edge kernel: Bluetooth: hci0: RTL: fw version 0xdfc6d922 ``` I have installed BlueZ package https://www.bluez.org/ and trying to discover the device which worked but i am always getting errors when trying to connect to the device via BT (after pairing) ``` Apr 18 09:22:36 bomi-edge bluetoothd[2413]: src/adapter.c:property_set_mode() sending Set Discoverable command for index 0 Apr 18 09:22:36 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:send_request() [0x0000] command 0x0007 Apr 18 09:22:36 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] command 0x0007 complete: 0x00 Apr 18 09:22:36 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:send_request() [0x0000] command 0x0006 Apr 18 09:22:37 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] command 0x0006 complete: 0x00 Apr 18 09:22:37 bomi-edge bluetoothd[2413]: src/adapter.c:property_set_mode_complete() Success (0x00) Apr 18 09:22:37 bomi-edge bluetoothd[2413]: src/adapter.c:new_settings_callback() Settings: 0x00000adb Apr 18 09:22:37 bomi-edge bluetoothd[2413]: src/adapter.c:settings_changed() Changed settings: 0x00000008 Apr 18 09:22:37 bomi-edge bluetoothd[2413]: src/adapter.c:settings_changed() Pending settings: 0x00000002 Apr 18 09:23:07 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] event 0x000b Apr 18 09:23:07 bomi-edge bluetoothd[2413]: src/adapter.c:connected_callback() hci0 device 74:9E:F5:28:3C:4C connected eir_len 15 Apr 18 09:23:07 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] event 0x000f Apr 18 09:23:07 bomi-edge bluetoothd[2413]: src/adapter.c:user_confirm_request_callback() hci0 74:9E:F5:28:3C:4C confirm_hint 0 Apr 18 09:23:07 bomi-edge bluetoothd[2413]: src/device.c:new_auth() Requesting agent authentication for 74:9E:F5:28:3C:4C Apr 18 09:23:07 bomi-edge bluetoothd[2413]: src/agent.c:agent_ref() 0x5e96f8c12780: ref=2 Apr 18 09:23:07 bomi-edge bluetoothd[2413]: src/agent.c:agent_request_confirmation() Calling Agent.RequestConfirmation: name=:1.49, path=/org/bluez/agent, passkey=639324 Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/agent.c:agent_ref() 0x5e96f8c12780: ref=3 Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/adapter.c:btd_adapter_confirm_reply() hci0 addr 74:9E:F5:28:3C:4C success 1 Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/agent.c:agent_unref() 0x5e96f8c12780: ref=2 Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/agent.c:agent_unref() 0x5e96f8c12780: ref=1 Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:send_request() [0x0000] command 0x001c Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] command 0x001c complete: 0x00 Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] event 0x0009 Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/adapter.c:new_link_key_callback() hci0 new key for 74:9E:F5:28:3C:4C type 5 pin_len 0 store_hint 1 Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/device.c:device_bonding_complete() bonding (nil) status 0x00 Apr 18 09:23:14 bomi-edge bluetoothd[2413]: src/adapter.c:resume_discovery() Apr 18 09:23:19 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] event 0x000c Apr 18 09:23:19 bomi-edge bluetoothd[2413]: src/adapter.c:dev_disconnected() Device 74:9E:F5:28:3C:4C disconnected, reason 3 Apr 18 09:23:19 bomi-edge bluetoothd[2413]: src/adapter.c:adapter_remove_connection() Apr 18 09:23:19 bomi-edge bluetoothd[2413]: plugins/policy.c:disconnect_cb() reason 3 Apr 18 09:23:19 bomi-edge bluetoothd[2413]: src/adapter.c:bonding_attempt_complete() hci0 bdaddr 74:9E:F5:28:3C:4C type 0 status 0xe Apr 18 09:23:19 bomi-edge bluetoothd[2413]: src/device.c:device_bonding_complete() bonding (nil) status 0x0e Apr 18 09:23:19 bomi-edge bluetoothd[2413]: src/device.c:device_bonding_failed() status 14 Apr 18 09:23:19 bomi-edge bluetoothd[2413]: src/adapter.c:resume_discovery() Apr 18 09:25:37 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] event 0x0006 Apr 18 09:25:37 bomi-edge bluetoothd[2413]: src/adapter.c:new_settings_callback() Settings: 0x00000ad3 Apr 18 09:25:37 bomi-edge bluetoothd[2413]: src/adapter.c:settings_changed() Changed settings: 0x00000008 Apr 18 09:25:37 bomi-edge bluetoothd[2413]: src/adapter.c:settings_changed() Pending settings: 0x00000002 Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/adapter.c:set_mode() sending set mode command for index 0 Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/adapter.c:property_set_mode() sending Set Discoverable command for index 0 Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:send_request() [0x0000] command 0x0007 Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] command 0x0007 complete: 0x00 Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:send_request() [0x0000] command 0x0006 Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] command 0x0006 complete: 0x00 Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/adapter.c:property_set_mode_complete() Success (0x00) Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/adapter.c:new_settings_callback() Settings: 0x00000adb Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/adapter.c:settings_changed() Changed settings: 0x00000008 Apr 18 09:29:29 bomi-edge bluetoothd[2413]: src/adapter.c:settings_changed() Pending settings: 0x00000002 Apr 18 09:32:31 bomi-edge bluetoothd[2413]: src/shared/mgmt.c:can_read_data() [0x0000] event 0x0006 Apr 18 09:32:31 bomi-edge bluetoothd[2413]: src/adapter.c:new_settings_callback() Settings: 0x00000ad3 Apr 18 09:32:31 bomi-edge bluetoothd[2413]: src/adapter.c:settings_changed() Changed settings: 0x00000008 Apr 18 09:32:31 bomi-edge bluetoothd[2413]: src/adapter.c:settings_changed() Pending settings: 0x00000002 ``` ** Affects: linux (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2062280 Title: Bluetooth Broken In Kernel Versions 6.5+ (Realtek) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2062280/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
