Comment 0 for bug 1881612

On Dell Inspiron 3593 running Ubuntu 20.04, Bluetooth Headset Vipex VX-BH001 works in A2DP, but not in HSP/HFP. (So it cannot be used as a microphone.)

Same headset works correctly on an older Dell Latitude under both 20.04 and 18.04, and works on the same laptop when using an external USB bluetooth adapter, so I conclude the issue is probably with the iwlwifi driver or firmware.

The bluetooth headset pairs okay, but in sound settings if I switch configuration to "Headset Head Unit (HSP/HFP)", then the "test" dialog under "output" will not play sound, and the "input" panel does not show any incoming audio.

I tried upgrading to -proposed kernel and installing updated firmware in /lib/firmware, but without improvement.

I also note that 'modinfo iwlwifi' on my laptop lists support for firmware up to iwlwifi-Qu-c0-hr-b0-52.ucode, but linux-firmware.git has newer firmware published: iwlwifi-Qu-c0-jf-b0-55.ucode

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: pulseaudio 1:13.99.1-1ubuntu3.3
ProcVersionSignature: Ubuntu 5.6.0-1011.11-oem 5.6.14
Uname: Linux 5.6.0-1011-oem x86_64
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: magnus 207273 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Jun 1 10:58:12 2020
InstallationDate: Installed on 2020-05-24 (8 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: pulseaudio
Symptom: audio
Symptom_Card: Vipex VX-BH001
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: magnus 207273 F.... pulseaudio
Symptom_Type: No sound at all
Title: [Vipex VX-BH001, recording] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/24/2020
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.8.0
dmi.board.name: 0TGVJN
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.8.0:bd03/24/2020:svnDellInc.:pnInspiron3593:pvr:rvnDellInc.:rn0TGVJN:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Inspiron
dmi.product.name: Inspiron 3593
dmi.product.sku: 0979
dmi.sys.vendor: Dell Inc.