Public bug reported:
Summary
Bluetooth HFP/HSP profile is broken on Ubuntu 26.04.
Hardware
Computer:
Intel 2nd Generation Core platform
Bluetooth controller:
Realtek RTL8723BU
Headset:
Boat Airdopes 280 ANC
Problem
A2DP playback works correctly.
When switching to the Hands-Free Profile (HFP/HSP):
- Speaker stops working.
- Microphone stops working.
- Audio applications cannot use the headset for calls.
Expected result
Speaker and microphone should both work in HFP mode.
Actual result
Both speaker and microphone stop functioning after switching to HFP.
Regression testing
Windows:
✓ Speaker works
✓ Microphone works
Ubuntu 25.04 Live USB:
✓ Speaker works
✓ Microphone works
Ubuntu 26.04 Live USB:
✗ Speaker does not work in HFP
✗ Microphone does not work in HFP
Ubuntu 26.04 fresh installation:
Same issue.
Additional information
This issue is reproducible on a clean installation and also on the
Ubuntu 26.04 Live USB, so it is not caused by user configuration.
The issue does not occur on Ubuntu 25.04 using the same hardware.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: bluez 5.85-4ubuntu0.1
ProcVersionSignature: Ubuntu 7.0.0-27.27-generic 7.0.6
Uname: Linux 7.0.0-27-generic x86_64
ApportVersion: 2.34.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Jul 16 16:18:38 2026
InstallationDate: Installed on 2026-07-11 (5 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
InterestingModules: rfcomm bnep btusb bluetooth
MachineType: ZEBRONICS H61
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-27-generic
root=UUID=913bbcc0-7ffa-4947-b9a7-bd0343f2b273 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: bluez
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/21/2025
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H61
dmi.board.vendor: ZEBRONICS
dmi.board.version: V1.3
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd08/21/2025:br4.6:svnZEBRONICS:pnH61:pvrTobefilledbyO.E.M.:rvnZEBRONICS:rnH61:rvrV1.3:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:skuTobefilledbyO.E.M.:pfaTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: H61
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: ZEBRONICS
hciconfig:
hci0: Type: Primary Bus: USB
BD Address: 00:1F:05:78:76:8B ACL MTU: 820:8 SCO MTU: 255:16
UP RUNNING PSCAN
RX bytes:1494 acl:0 sco:0 events:163 errors:0
TX bytes:28311 acl:0 sco:0 commands:164 errors:0
modified.conffile..etc.bluetooth.main.conf: [deleted]
** Affects: bluez (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute
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https://bugs.launchpad.net/bugs/2160975
Title:
Regression: Bluetooth HFP profile broken on RTL8723BU (Boat Airdopes
280 ANC) in Ubuntu 26.04
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