I did the modification : [Unit] Description=Sound Service # We require pulseaudio.socket to be active before starting the daemon, because # while it is possible to use the service without the socket, it is not clear # why it would be desirable. # # A user installing pulseaudio and doing `systemctl --user start pulseaudio` # will not get the socket started, which might be confusing and problematic if # the server is to be restarted later on, as the client autospawn feature # might kick in. Also, a start of the socket unit will fail, adding to the # confusion. # # After=pulseaudio.socket is not needed, as it is already implicit in the # socket-service relationship, see systemd.socket(5). Requires=pulseaudio.socket ConditionUser=!root [Service] ExecStart=/usr/bin/pulseaudio -vvvv --daemonize=no --log-target=file:/home/$USER/pulse.txt LockPersonality=yes MemoryDenyWriteExecute=yes NoNewPrivileges=yes Restart=on-failure RestrictNamespaces=yes SystemCallArchitectures=native SystemCallFilter=@system-service # Note that notify will only work if --daemonize=no Type=notify UMask=0077 Slice=session.slice [Install] Also=pulseaudio.socket WantedBy=default.target However, after rebooting the system, I couldn't locate the pulse.txt file in my home directory (/home/$USER/) or by searching it, and have confirmed that hidden files are visible. On a positive note, I noticed that I can now choose the headphone microphone from the input device list without the need to delete and re-setup the headphone from the Bluetooth settings. Thanks for the help. On Thu, Mar 28, 2024 at 12:27 PM Hui Wang