Public bug reported:
Hello,
I am experiencing an issue with the Bluetooth module on my new PC using
the Realtek RTL8852BU chip (USB ID: 0bda:b853). The Bluetooth interface
fails to initialize properly, rendering it unusable.
Hardware Details:
Bluetooth Chip: Realtek RTL8852BU (0bda:b853)
OS: Ubuntu Linux
Error Log (dmesg):
Plaintext
Bluetooth: hci0: RTL: rom_version status=0 version=3
Bluetooth: hci0: RTL: btrtl_initialize: key id 0
Bluetooth: hci0: RTL: loading rtl_bt/rtl8852bu_fw.bin
Bluetooth: hci0: RTL: loading rtl_bt/rtl8852bu_config.bin
Bluetooth: hci0: Opcode 0xfcf0 failed: -16
Bluetooth: hci0: AOSP extensions version v0.96
Bluetooth: hci0: AOSP quality report is not supported
When trying to bring the interface up (sudo hciconfig hci0 up), it returns:
Can't init device hci0: No data available (61)
It seems that the current driver implementation in the kernel lacks the
proper vendor command handshake (0xfcf0) for this specific USB revision
of the RTL8852BU chip.
Could you please look into adding proper support or a fix for this
controller in upcoming kernel updates?
Thank you,
Lukáš
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-29-generic 7.0.0-29.29
ProcVersionSignature: Ubuntu 7.0.0-29.29-generic 7.0.12
Uname: Linux 7.0.0-29-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: lla 5241 F.... wireplumber
/dev/snd/controlC0: lla 5241 F.... wireplumber
/dev/snd/seq: lla 5224 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Aug 7 14:58:38 2026
InstallationDate: Installed on 2026-08-07 (0 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
MachineType: LENOVO 83VA
ProcEnviron:
LANG=cs_CZ.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-29-generic
root=UUID=c434f057-7d08-4d80-914e-8976ce2c49f7 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/12/2026
dmi.bios.release: 1.13
dmi.bios.vendor: LENOVO
dmi.bios.version: U7CN13WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: No DPK
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: LOQ Essential 15ARP11
dmi.ec.firmware.release: 1.13
dmi.modalias:
dmi:bvnLENOVO:bvrU7CN13WW:bd01/12/2026:br1.13:efr1.13:svnLENOVO:pn83VA:pvrLOQEssential15ARP11:rvnLENOVO:rnLNVNB161216:rvrNoDPK:cvnLENOVO:ct10:cvrLOQEssential15ARP11:skuLENOVO_MT_83VA_BU_idea_FM_LOQEssential15ARP11:pfaLOQEssential15ARP11:
dmi.product.family: LOQ Essential 15ARP11
dmi.product.name: 83VA
dmi.product.sku: LENOVO_MT_83VA_BU_idea_FM_LOQ Essential 15ARP11
dmi.product.version: LOQ Essential 15ARP11
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2163040
Title:
Bluetooth failure on Realtek RTL8852BU (0bda:b853): Opcode 0xfcf0
failed: -16
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