Bluetooth device Qualcomm Atheros QCWB335 not creating hci0

[matsob0123]

Describe the issue you are experiencing

Bluetooth subsystem loads in Home Assistant OS, but no HCI device is created. The system shows Bluetooth kernel initialization messages, however no hci0 interface appears. The Qualcomm Atheros QCWB335 device is detected via USB, but Bluetooth functionality is not initialized.

Wi-Fi part of the QCWB335 works correctly (ath9k driver active), but Bluetooth remains unavailable.

What operating system image do you use?

generic-x86-64 (Generic UEFI capable x86-64 systems)

What version of Home Assistant Operating System is installed?

17.3

Did the problem occur after upgrading the Operating System?

No

Hardware details

Qualcomm Atheros QCWB335 (Wi-Fi + Bluetooth combo module)
Bluetooth USB device ID: 13d3:3423
Wi-Fi working via ath9k driver

Steps to reproduce the issue

...

Anything in the Supervisor logs that might be useful for us?

➜  ~ dmesg | grep -i blue          
[    2.413912] Bluetooth: Core ver 2.22
[    2.422184] NET: Registered PF_BLUETOOTH protocol family
[    2.422198] Bluetooth: HCI device and connection manager initialized
[    2.422208] Bluetooth: HCI socket layer initialized
[    2.422215] Bluetooth: L2CAP socket layer initialized
[    2.422225] Bluetooth: SCO socket layer initialized
[   36.042497] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[   36.042505] Bluetooth: BNEP filters: protocol multicast
[   36.042512] Bluetooth: BNEP socket layer initialized
[   99.451857] Bluetooth: RFCOMM TTY layer initialized
[   99.451872] Bluetooth: RFCOMM socket layer initialized
[   99.451881] Bluetooth: RFCOMM ver 1.11

Anything in the Host logs that might be useful for us?

-

System information

No response

Additional information

No response