mt7921au chipset Not being seen or seeing other devices

[LargePrime]

META NOTE; Perhaps a command or note on how to retrieve these version numbers would be useful to complete this template.

blueman:2.3.2 blueman-applet 13.39.57 BlueZ: Distribution: Linux 5.19.12-artix1-1 artix-lxqt-openrc artixlinux.org Desktop environment:LXQt OpenRC

• [X ] I have consulted the Troubleshooting page and done my best effort to follow.

lsusb Bus 009 Device 005: ID 0e8d:7961 MediaTek Inc. Wireless_Device bluetoothctl list Controller E0:E1:A9:34:A4:66 Compast [default]

python3 Python 3.10.7 (main, Sep 7 2022, 18:52:02) [GCC 12.2.0] on linux Type "help", "copyright", "credits" or "license" for more information.

from blueman.gui.Notification import Notification Notification("Title", "Message", 0, [["action1", "Action 1"], ["action2", "Action 2"]]).show() Message shows

bluetoothctl below https://gist.github.com/LargePrime/1e6591fed7c53358a46793510f25240d I did not do a pair command because I do not know the syntax or device address

Device will not pair.

Extra info https://github.com/morrownr/USB-WiFi/blob/main/home/How_to_Install_Firmware_for_Mediatek_based_USB_WiFi_adapters.md suggests this device is supported.

WIFI_MT7961_patch_mcu_1_2_hdr.bin WIFI_RAM_CODE_MT7961_1.bin BT_RAM_CODE_MT7961_1_2_hdr.bin are in /lib/firmware/mediatek and were put there by the distro.

Thank you for your time, and sorry for whatever I missed.

[cschramm]

Device will not pair.

Is this the problem statement? I assume you're scanning, discovering some specific device and then use blueman to pair it but ... what? An error message?

[LargePrime]

Scan finds no devices. Devices are available and are seen with other bluetooth devices

Also it cannot be seen by other devices

[cschramm]

So the adapter is registered and seems to be scanning properly but it does not find any devices. Not sure if I can help here but I'd enable BlueZ debug logging and check what the process gives there and also check kernel messages of course. If everything looks good there, I do not have another idea.

[LargePrime]

can you point me at a thing or walk me through that?

[cschramm]

https://github.com/blueman-project/blueman/wiki/Troubleshooting#debugging-bluez https://wiki.archlinux.org/title/bluetooth#Debugging

And dmesg -w for following kernel messages.

When both are running in terminals, try scanning and check what's showing up.

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[LargePrime]

I apologize for this delay

bluetoothctl list Controller E0:E1:A9:34:A4:66 Compast [default] Controller 00:1A:7D:DA:71:13 box lsusb Bus 004 Device 002: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) Bus 009 Device 004: ID 0e8d:7961 MediaTek Inc. Wireless_Device

I physically removed the dongle called box

killall blueman-applet blueman-applet --loglevel debug

blueman-applet 11.25.12 INFO     PluginManager:87 load_plugin: ['TransferService', 'StatusNotifierItem', 'AuthAgent', 'ExitItem', 'SerialManager', 'Networking', 'PowerManager', 'StandardItems', 'GameControllerWakelock', 'Menu', 'PPPSupport', 'AutoConnect', 'NMPANSupport', 'ConnectionNotifier', 'StatusIcon', 'NetUsage', 'DBusService', 'KillSwitch', 'NMDUNSupport', 'ShowConnected', 'RecentConns', 'DhcpClient', 'DiscvManager', 'DisconnectItems']
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.TransferService.TransferService'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.Menu.Menu'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.StatusIcon.StatusIcon'>
blueman-applet 11.25.12 DEBUG    Base:60 do_g_properties_changed: /org/bluez/hci1 {'Address': 'E0:E1:A9:34:A4:66', 'AddressType': 'public', 'Name': 'box', 'Alias': 'Compast', 'Class': 8126724, 'Powered': True, 'Discoverable': True, 'DiscoverableTimeout': 0, 'Pairable': True, 'PairableTimeout': 0, 'Discovering': False, 'UUIDs': ['00001133-0000-1000-8000-00805f9b34fb', '0000110e-0000-1000-8000-00805f9b34fb', '00001105-0000-1000-8000-00805f9b34fb', '00001132-0000-1000-8000-00805f9b34fb', '00001200-0000-1000-8000-00805f9b34fb', '00001104-0000-1000-8000-00805f9b34fb', '00005005-0000-1000-8000-0002ee000001', '0000110c-0000-1000-8000-00805f9b34fb', '00001801-0000-1000-8000-00805f9b34fb', '0000112f-0000-1000-8000-00805f9b34fb', '0000180a-0000-1000-8000-00805f9b34fb', '0000110b-0000-1000-8000-00805f9b34fb', '00001800-0000-1000-8000-00805f9b34fb', '0000111f-0000-1000-8000-00805f9b34fb', '0000110a-0000-1000-8000-00805f9b34fb', '00001106-0000-1000-8000-00805f9b34fb', '0000111e-0000-1000-8000-00805f9b34fb'], 'Modalias': 'usb:v1D6Bp0246d0542', 'Roles': ['central', 'peripheral']}
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.StatusNotifierItem.StatusNotifierItem'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.AuthAgent.AuthAgent'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.ExitItem.ExitItem'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.DBusService.DBusService'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.SerialManager.SerialManager'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.Networking.Networking'>
blueman-applet 11.25.12 INFO     Networking:35 load_nap_settings: Loading NAP settings
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.PowerManager.PowerManager'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.StandardItems.StandardItems'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.GameControllerWakelock.GameControllerWakelock'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.PPPSupport.PPPSupport'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.AutoConnect.AutoConnect'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.ConnectionNotifier.ConnectionNotifier'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.KillSwitch.KillSwitch'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.ShowConnected.ShowConnected'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.RecentConns.RecentConns'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.DhcpClient.DhcpClient'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.DiscvManager.DiscvManager'>
blueman-applet 11.25.12 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.DisconnectItems.DisconnectItems'>
blueman-applet 11.25.12 INFO     KillSwitch:106 io_event  : killswitch registered 2
blueman-applet 11.25.12 INFO     KillSwitch:122 io_event  : State: True
blueman-applet 11.25.12 INFO     PowerManager:179 update_power_state: off False | foff False | on True | current state True | new state True
blueman-applet 11.25.12 INFO     KillSwitch:85 _on_connman_vanished: net.connman vanished
blueman-applet 11.25.12 INFO     TransferService:234 _on_dbus_name_appeared: org.bluez.obex :1.31
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.DisconnectItems.DisconnectItems object at 0x7f927d9070d0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.DiscvManager.DiscvManager object at 0x7f927d907490>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.DhcpClient.DhcpClient object at 0x7f927d9074c0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.RecentConns.RecentConns object at 0x7f927d9071f0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.ShowConnected.ShowConnected object at 0x7f927d906e90>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.KillSwitch.KillSwitch object at 0x7f927d9072e0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.ConnectionNotifier.ConnectionNotifier object at 0x7f927d906d40>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.AutoConnect.AutoConnect object at 0x7f927d9072b0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.PPPSupport.PPPSupport object at 0x7f927d9071c0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.GameControllerWakelock.GameControllerWakelock object at 0x7f927d907190>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.StandardItems.StandardItems object at 0x7f927d9068f0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.PowerManager.PowerManager object at 0x7f927d906860>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.Networking.Networking object at 0x7f927d906560>
blueman-applet 11.25.12 DEBUG    SerialManager:50 on_delete : Terminating any running scripts
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.SerialManager.SerialManager object at 0x7f927d906710>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.DBusService.DBusService object at 0x7f927d9067a0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.ExitItem.ExitItem object at 0x7f927d906470>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.AuthAgent.AuthAgent object at 0x7f927d9063e0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.StatusNotifierItem.StatusNotifierItem object at 0x7f927d906380>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <StatusIcon.StatusIcon object at 0x7f927eac9600 (blueman+plugins+applet+StatusIcon+StatusIcon at 0x556e5b8c8ba0)>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.Menu.Menu object at 0x7f927fd49de0>
blueman-applet 11.25.12 DEBUG    BasePlugin:63 _on_plugin_delete: Deleting plugin instance <blueman.plugins.applet.TransferService.TransferService object at 0x7f927fd49930>

blueman-applet --loglevel debug
blueman-applet 11.27.00 INFO     PluginManager:87 load_plugin: ['TransferService', 'StatusNotifierItem', 'AuthAgent', 'ExitItem', 'SerialManager', 'Networking', 'PowerManager', 'StandardItems', 'GameControllerWakelock', 'Menu', 'PPPSupport', 'AutoConnect', 'NMPANSupport', 'ConnectionNotifier', 'StatusIcon', 'NetUsage', 'DBusService', 'KillSwitch', 'NMDUNSupport', 'ShowConnected', 'RecentConns', 'DhcpClient', 'DiscvManager', 'DisconnectItems']
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.TransferService.TransferService'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.Menu.Menu'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.StatusIcon.StatusIcon'>
blueman-applet 11.27.00 DEBUG    Base:60 do_g_properties_changed: /org/bluez/hci1 {'Address': 'E0:E1:A9:34:A4:66', 'AddressType': 'public', 'Name': 'box', 'Alias': 'Compast', 'Class': 8126724, 'Powered': True, 'Discoverable': True, 'DiscoverableTimeout': 0, 'Pairable': False, 'PairableTimeout': 0, 'Discovering': False, 'UUIDs': ['00001133-0000-1000-8000-00805f9b34fb', '0000110e-0000-1000-8000-00805f9b34fb', '00001105-0000-1000-8000-00805f9b34fb', '00001132-0000-1000-8000-00805f9b34fb', '00001200-0000-1000-8000-00805f9b34fb', '00001104-0000-1000-8000-00805f9b34fb', '00005005-0000-1000-8000-0002ee000001', '0000110c-0000-1000-8000-00805f9b34fb', '00001801-0000-1000-8000-00805f9b34fb', '0000112f-0000-1000-8000-00805f9b34fb', '0000180a-0000-1000-8000-00805f9b34fb', '0000110b-0000-1000-8000-00805f9b34fb', '00001800-0000-1000-8000-00805f9b34fb', '0000111f-0000-1000-8000-00805f9b34fb', '0000110a-0000-1000-8000-00805f9b34fb', '00001106-0000-1000-8000-00805f9b34fb', '0000111e-0000-1000-8000-00805f9b34fb'], 'Modalias': 'usb:v1D6Bp0246d0542', 'Roles': ['central', 'peripheral']}
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.StatusNotifierItem.StatusNotifierItem'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.AuthAgent.AuthAgent'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.ExitItem.ExitItem'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.DBusService.DBusService'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.SerialManager.SerialManager'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.Networking.Networking'>
blueman-applet 11.27.00 INFO     Networking:35 load_nap_settings: Loading NAP settings
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.PowerManager.PowerManager'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.StandardItems.StandardItems'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.GameControllerWakelock.GameControllerWakelock'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.PPPSupport.PPPSupport'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.AutoConnect.AutoConnect'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.ConnectionNotifier.ConnectionNotifier'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.KillSwitch.KillSwitch'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.ShowConnected.ShowConnected'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.RecentConns.RecentConns'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.DhcpClient.DhcpClient'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.DiscvManager.DiscvManager'>
blueman-applet 11.27.00 INFO     PluginManager:160 __load_plugin: loading <class 'blueman.plugins.applet.DisconnectItems.DisconnectItems'>
blueman-applet 11.27.00 INFO     KillSwitch:106 io_event  : killswitch registered 2
blueman-applet 11.27.00 INFO     KillSwitch:122 io_event  : State: True
blueman-applet 11.27.00 INFO     PowerManager:179 update_power_state: off False | foff False | on True | current state True | new state True
blueman-applet 11.27.00 INFO     KillSwitch:85 _on_connman_vanished: net.connman vanished
blueman-applet 11.27.00 INFO     TransferService:234 _on_dbus_name_appeared: org.bluez.obex :1.31
blueman-applet 11.27.00 INFO     AgentManager:17 on_registered: /org/bluez/obex/agent/blueman
blueman-applet 11.27.00 INFO     Applet:63 _on_dbus_name_appeared: org.bluez :1.146
blueman-applet 11.27.00 INFO     Functions:114 launch    : Gtk eventtime is 0, not using LaunchContext
blueman-applet 11.27.00 INFO     BluezAgent:56 register_agent: Register Agent
blueman-applet 11.27.00 INFO     Networking:71 set_nap   : set nap False
blueman-applet 11.27.00 DEBUG    Base:60 do_g_properties_changed: /org/bluez/hci1 {'Pairable': True}
blueman-applet 11.27.00 DEBUG    DiscvManager:92 on_adapter_property_changed: prop Pairable True
blueman-applet 11.27.00 INFO     ShowConnected:50 enumerate_connections: Found 0 existing connections
blueman-applet 11.27.01 INFO     PowerManager:140 request_power_state: Requesting True
blueman-applet 11.27.01 INFO     KillSwitch:138 on_power_state_change_requested: True
blueman-applet 11.27.01 DEBUG    KillSwitch:151 on_power_state_change_requested: Using mechanism to set state: True
blueman-applet 11.27.01 INFO     PowerManager:125 check     : callbacks done
blueman-applet 11.27.01 INFO     PowerManager:96 set_adapter_state: True
blueman-applet 11.27.01 INFO     PowerManager:179 update_power_state: off False | foff False | on True | current state True | new state True
Traceback (most recent call last):
  File "/usr/lib/python3.10/site-packages/blueman/main/DBusProxies.py", line 52, in call_finish
    proxy.call_finish(resp)
gi.repository.GLib.GError: g-dbus-error-quark: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: Unknown action ‘Activate’ (16)
blueman-applet 11.27.21 DEBUG    Base:60 do_g_properties_changed: /org/bluez/hci1 {'Discovering': True}
blueman-applet 11.27.21 DEBUG    DiscvManager:92 on_adapter_property_changed: prop Discovering True
blueman-applet 11.27.31 DEBUG    Base:60 do_g_properties_changed: /org/bluez/hci1 {'Discovering': False}
blueman-applet 11.27.31 DEBUG    DiscvManager:92 on_adapter_property_changed: prop Discovering False

I physically turn on known good device and set to pairing. restart pairing in applet

blueman-applet 11.27.45 DEBUG    Base:60 do_g_properties_changed: /org/bluez/hci1 {'Discovering': True}
blueman-applet 11.27.45 DEBUG    DiscvManager:92 on_adapter_property_changed: prop Discovering True
blueman-applet 11.27.55 DEBUG    Base:60 do_g_properties_changed: /org/bluez/hci1 {'Discovering': False}
blueman-applet 11.27.55 DEBUG    DiscvManager:92 on_adapter_property_changed: prop Discovering False

python Python 3.10.9 (main, Dec 25 2022, 21:29:15) [GCC 12.2.0] on linux

Please advise further Kernel Log Feb 4 10:49:24 box kernel: Bluetooth: hci1: Device setup in 169108 usecs Feb 4 10:49:24 box kernel: Bluetooth: hci1: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported. Feb 4 10:49:24 box kernel: Bluetooth: hci1: AOSP extensions version v1.00 Feb 4 10:49:24 box kernel: Bluetooth: hci1: AOSP quality report is supported Feb 4 11:07:10 box kernel: Bluetooth: hci1: Device setup in 163476 usecs Feb 4 11:07:10 box kernel: Bluetooth: hci1: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.

inxi -Eazy Bluetooth: Device-1: MediaTek Wireless_Device type: USB driver: btusb,mt7921u bus-ID: 9-2.4:4 chip-ID: 0e8d:7961 class-ID: e001 serial: Report: rfkill ID: hci1 rfk-id: 2 state: up address: see --recommends

rfkill list 2: hci1: Bluetooth Soft blocked: no Hard blocked: no

errors.log

Feb  4 07:46:06 box kernel: Bluetooth: hci1: AOSP get vendor capabilities (-110)
Feb  4 07:46:13 box wpa_supplicant[2632]: bgscan simple: Failed to enable signal strength monitoring
Feb  4 07:46:25 box bluetoothd[2083]: src/profile.c:record_cb() Unable to get Hands-Free Voice gateway SDP record: Host is down
Feb  4 10:45:01 box bluetoothd[13053]: src/main.c:main() Unable to get on D-Bus
Feb  4 10:49:24 box bluetoothd[13408]: src/plugin.c:plugin_init() Failed to init vcp plugin
Feb  4 10:49:24 box bluetoothd[13408]: src/plugin.c:plugin_init() Failed to init mcp plugin
Feb  4 10:49:24 box bluetoothd[13408]: src/plugin.c:plugin_init() Failed to init bap plugin
Feb  4 11:07:10 box bluetoothd[14545]: src/plugin.c:plugin_init() Failed to init vcp plugin
Feb  4 11:07:10 box bluetoothd[14545]: src/plugin.c:plugin_init() Failed to init mcp plugin
Feb  4 11:07:10 box bluetoothd[14545]: src/plugin.c:plugin_init() Failed to init bap plugin
Feb  4 11:21:44 box bluetoothd[15398]: src/plugin.c:plugin_init() Failed to init vcp plugin
Feb  4 11:21:44 box bluetoothd[15398]: src/plugin.c:plugin_init() Failed to init mcp plugin
Feb  4 11:21:44 box bluetoothd[15398]: src/plugin.c:plugin_init() Failed to init bap plugin
Feb  4 11:24:40 box bluetoothd[15544]: src/plugin.c:plugin_init() Failed to init vcp plugin
Feb  4 11:24:40 box bluetoothd[15544]: src/plugin.c:plugin_init() Failed to init mcp plugin
Feb  4 11:24:40 box bluetoothd[15544]: src/plugin.c:plugin_init() Failed to init bap plugin

[cschramm]

Nothing that sticks out to me, but that does not include a bluetoothd debug log of the scan. Regarding the kernel messages I'd expect at least some messages from mt7921u, although that driver does not seem to be involved in Bluetooth.

[LargePrime]

twice started a scan of the mt7921u looking for any device

bluetoothd[8136]: src/device.c:device_profile_connected() Hands-Free Voice gateway Host is down (112) bluetoothd[8136]: src/device.c:device_profile_connected() returning response to :1.24 bluetoothd[8136]: src/service.c:btd_service_unref() 0x5580482766e0: ref=1 bluetoothd[8136]: src/adapter.c:start_discovery() sender :1.95 bluetoothd[8136]: src/adapter.c:update_discovery_filter() bluetoothd[8136]: src/adapter.c:discovery_filter_to_mgmt_cp() bluetoothd[8136]: src/adapter.c:trigger_start_discovery() bluetoothd[8136]: src/adapter.c:cancel_passive_scanning() bluetoothd[8136]: src/adapter.c:start_discovery_timeout() bluetoothd[8136]: src/adapter.c:start_discovery_timeout() adapter->current_discovery_filter == 0 bluetoothd[8136]: src/shared/mgmt.c:send_request() [0x0001] command 0x0023 bluetoothd[8136]: src/shared/mgmt.c:can_read_data() [0x0001] command 0x0023 complete: 0x00 bluetoothd[8136]: src/adapter.c:start_discovery_complete() status 0x00 bluetoothd[8136]: src/shared/mgmt.c:can_read_data() [0x0001] event 0x0013 bluetoothd[8136]: src/adapter.c:discovering_callback() hci1 type 7 discovering 1 method 0 bluetoothd[8136]: src/adapter.c:stop_discovery() sender :1.95 bluetoothd[8136]: src/shared/mgmt.c:send_request() [0x0001] command 0x0024 bluetoothd[8136]: src/shared/mgmt.c:can_read_data() [0x0001] event 0x0013 bluetoothd[8136]: src/adapter.c:discovering_callback() hci1 type 7 discovering 0 method 0 bluetoothd[8136]: src/adapter.c:trigger_start_discovery() bluetoothd[8136]: src/adapter.c:cancel_passive_scanning() bluetoothd[8136]: src/shared/mgmt.c:can_read_data() [0x0001] command 0x0024 complete: 0x00 bluetoothd[8136]: src/adapter.c:stop_discovery_complete() status 0x00 bluetoothd[8136]: src/adapter.c:discovery_remove() owner :1.95 bluetoothd[8136]: src/adapter.c:discovery_free() 0x5580482acb30 bluetoothd[8136]: src/adapter.c:trigger_passive_scanning() bluetoothd[8136]: src/adapter.c:start_discovery() sender :1.95 bluetoothd[8136]: src/adapter.c:update_discovery_filter() bluetoothd[8136]: src/adapter.c:discovery_filter_to_mgmt_cp() bluetoothd[8136]: src/adapter.c:trigger_start_discovery() bluetoothd[8136]: src/adapter.c:cancel_passive_scanning() bluetoothd[8136]: src/adapter.c:start_discovery_timeout() bluetoothd[8136]: src/adapter.c:start_discovery_timeout() adapter->current_discovery_filter == 0 bluetoothd[8136]: src/shared/mgmt.c:send_request() [0x0001] command 0x0023 bluetoothd[8136]: src/shared/mgmt.c:can_read_data() [0x0001] command 0x0023 complete: 0x00 bluetoothd[8136]: src/adapter.c:start_discovery_complete() status 0x00 bluetoothd[8136]: src/shared/mgmt.c:can_read_data() [0x0001] event 0x0013 bluetoothd[8136]: src/adapter.c:discovering_callback() hci1 type 7 discovering 1 method 0 bluetoothd[8136]: src/shared/mgmt.c:can_read_data() [0x0001] event 0x0013 bluetoothd[8136]: src/adapter.c:discovering_callback() hci1 type 7 discovering 0 method 0 bluetoothd[8136]: src/adapter.c:trigger_start_discovery() bluetoothd[8136]: src/adapter.c:cancel_passive_scanning() bluetoothd[8136]: src/adapter.c:stop_discovery() sender :1.95 bluetoothd[8136]: src/adapter.c:discovery_remove() owner :1.95 bluetoothd[8136]: src/adapter.c:discovery_free() 0x5580482ad460 bluetoothd[8136]: src/adapter.c:trigger_passive_scanning()

[cschramm]

BlueZ successfully runs a complete discovery and finds absolutely nothing, so if there is a responsive device in reach, the chip does not seem to work as expected. I don't know how to get behind this. It's probably best to address the BlueZ project or Linux.