[Bug 221754] New: RTL8852BE Bluetooth (0bda:b853) fails to init: Opcode 0xfcf0 failed: -16, hci0 never registers with mgmt (BD Address 00:00:00:00:00:00)

[Bug 221754] New: RTL8852BE Bluetooth (0bda:b853) fails to init: Opcode 0xfcf0 failed: -16, hci0 never registers with mgmt (BD Address 00:00:00:00:00:00)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221754

            Bug ID: 221754
           Summary: RTL8852BE Bluetooth (0bda:b853) fails to init: Opcode
                    0xfcf0 failed: -16, hci0 never registers with mgmt (BD
                    Address 00:00:00:00:00:00)
           Product: Drivers
           Version: 2.5
          Hardware: AMD
                OS: Linux
            Status: NEW
          Severity: blocking
          Priority: P3
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: serge.brun@gmail.com
        Regression: No

Full bug report for Realtek RTL8852BE internal Bluetooth failing to initialize
on
Lenovo IdeaPad Pro 5 14AGP11 (Ubuntu 26.04, kernel 7.0.0-27-generic). Includes
dmesg output, hciconfig/btmgmt/rfkill output, and a list of all troubleshooting
steps already attempted (driver reload, USB rebind, firmware replacement, DKMS
rebuild, manual BD address assignment) — all reproducing the identical
Opcode 0xfcf0 / -EBUSY failure.

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[Bug 221754] RTL8852BE Bluetooth (0bda:b853) fails to init: Opcode 0xfcf0 failed: -16, hci0 never registers with mgmt (BD Address 00:00:00:00:00:00)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221754

--- Comment #1 from serge.brun@gmail.com ---
Created attachment 310453
  --> https://bugzilla.kernel.org/attachment.cgi?id=310453&action=edit
rtl8852be-bluetooth-bug-report.md

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[Bug 221754] RTL8852BE Bluetooth (0bda:b853) fails to init: Opcode 0xfcf0 failed: -16, hci0 never registers with mgmt (BD Address 00:00:00:00:00:00)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=221754

Adam (dohojda.adam@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dohojda.adam@gmail.com

--- Comment #2 from Adam (dohojda.adam@gmail.com) ---
I have very same problem on Lenovo IdeaPad Slim 5 14AHP11

Disribution & kernel: Ubuntu 26.04 LTS, kernel 7.0.0-27-generic
lsusb: 0bda:b853 Realtek Semiconductor Corp. Bluetooth Radio

My filtered dmseg trace:
```
[    3.426562] systemd[1]: systemd-hibernate-clear.service - Clear Stale
Hibernate Storage Info skipped, unmet condition check
ConditionPathExists=/sys/firmware/efi/efivars/HibernateLocation-8cf2644b-4b0b-428f-9387-6d876050dc67
[    4.034621] amdxdna 0000:05:00.1: [drm] Load firmware
amdnpu/1502_00/npu_7.sbin
[    4.058678] kvm_amd: [Firmware Bug]: Cannot enable x2AVIC, AVIC is
unsupported
[    4.081452] rtw89_8852be 0000:02:00.0: loaded firmware
rtw89/rtw8852b_fw-1.bin
[    4.089206] rtw89_8852be 0000:02:00.0: Firmware version 0.29.29.15
(6fb3ec41), cmd version 0, type 5
[    4.089213] rtw89_8852be 0000:02:00.0: Firmware version 0.29.29.15
(6fb3ec41), cmd version 0, type 3
[    5.716983] amdgpu 0000:04:00.0: [drm] Loading DMUB firmware via PSP:
version=0x08005700
[    5.717220] amdgpu 0000:04:00.0: [VCN instance 0] Found VCN firmware Version
ENC: 1.24 DEC: 9 VEP: 0 Revision: 16
[    5.750181] Bluetooth: hci0: RTL: examining hci_ver=0b hci_rev=000b
lmp_ver=0b lmp_subver=8852
[    5.753172] Bluetooth: hci0: RTL: rom_version status=0 version=3
[    5.756172] Bluetooth: hci0: RTL: btrtl_initialize: key id 0
[    5.756176] Bluetooth: hci0: RTL: loading rtl_bt/rtl8852bu_fw.bin
[    5.757225] Bluetooth: hci0: RTL: loading rtl_bt/rtl8852bu_config.bin
[    5.766164] Bluetooth: hci0: AOSP extensions version v0.96
[    5.766168] Bluetooth: hci0: AOSP quality report is not supported
[  131.458300] Bluetooth: hci0: RTL: examining hci_ver=0b hci_rev=000b
lmp_ver=0b lmp_subver=8852
[  131.461055] Bluetooth: hci0: RTL: rom_version status=0 version=3
[  131.464314] Bluetooth: hci0: RTL: btrtl_initialize: key id 0
[  131.464331] Bluetooth: hci0: RTL: loading rtl_bt/rtl8852bu_fw.bin
[  131.465152] Bluetooth: hci0: RTL: loading rtl_bt/rtl8852bu_config.bin
[  131.470914] Bluetooth: hci0: Opcode 0xfcf0 failed: -16
[  131.475291] Bluetooth: hci0: AOSP extensions version v0.96
[  131.475307] Bluetooth: hci0: AOSP quality report is not supported

```

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