Sound Default Output Device Not Effective

[muawijhe]

On Ubuntu 20.04, once a bluetooth headphone is connected, it is not possible to use a different device output from settings page. In particular, despite the list has been populated properly, any selection apparently does not effect the system. Once the bluetooth device is disconnected, everything goes back to normal, giving possibility to switch between different sound devices.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.12
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: muawijhe 761366 F.... pulseaudio
 /dev/snd/controlC0: muawijhe 761366 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 16 16:20:50 2020
DistributionChannelDescriptor:
 # This is the distribution channel descriptor for the OEM CDs
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-bionic-amd64-20180608-47+italia-whl+X31
InstallationDate: Installed on 2019-03-04 (623 days ago)
InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary 20180608-09:38
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Title: Bluetooth sound card not detected
UpgradeStatus: Upgraded to focal on 2020-10-27 (20 days ago)
dmi.bios.date: 02/04/2020
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.10.0
dmi.board.name: 0KTW76
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.10.0:bd02/04/2020:svnDellInc.:pnXPS139380:pvr:rvnDellInc.:rn0KTW76:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 9380
dmi.product.sku: 08AF
dmi.sys.vendor: Dell Inc.
modified.conffile..etc.default.apport: [modified]
mtime.conffile..etc.default.apport: 2019-04-09T10:21:56.986707