Ubuntu 22.04 - No sound from frontal case jack AUX

[ricciolino]

Stopped working again

Don't know why...

Still this return correct...

> cat /usr/share/alsa/ucm2/USB-Audio/USB-Audio.conf | grep 0db0:b202
        # 0db0:b202 MSI MAG Z690 Tomahawk Wifi

I also tried to re-apply steps, but with no lucky...

What could be happened this time ?

[ricciolino]

I temporary solved this issue by applying following workaround (dirty solution).

Created systemd user service:

> cat $HOME/.config/systemd/user/front-headphones-switch-handler.service 
[Unit]
Description=Run front-headphones-switch-handler

[Service]
; Type=oneshot
Type=simple
ExecStart=/usr/local/bin/front-headphones-switch-handler
Restart=on-failure
RestartSec=5

[Install]
WantedBy=default.target

And bash script:

> cat /usr/local/bin/front-headphones-switch-handler
#!/bin/bash

TARGET_DEVICE="Headphones"

while true; do
    SINK_SELECTED_STATUS=`cat $HOME/.front-headphones-sink-selected-status`

    if [ `pactl list sinks short | grep $TARGET_DEVICE | wc -l` -lt 1 ]; then
        pacmd load-module module-alsa-sink sink_name=$TARGET_DEVICE sink_properties=device.description=$TARGET_DEVICE device=hw:Audio,1 control='PCM',1
        pactl set-default-sink alsa_output.usb-Generic_USB_Audio-00.analog-stereo 2>/dev/null
    fi

    are_front_headphones_attached=$(pacmd list-sinks | grep 'analog-output-headphones' | grep active | wc -l)
    if [ $are_front_headphones_attached -gt 0 ]; then
        if [ "$SINK_SELECTED_STATUS" == "FALSE" ]; then
            pactl set-default-sink "$TARGET_DEVICE" 2>/dev/null
            
            if [ $? -eq 0 ]; then
                echo TRUE > $HOME/.front-headphones-sink-selected-status
            else
                notify-send "front-headphones-switch-handler" "ERROR in setting front-headphones as output device"
            fi
        fi

    else
        is_speaker_already_default=$(pacmd list-sinks | grep 'analog-output-speaker' | grep active | wc -l)
        if [ $is_speaker_already_default -gt 0 ]; then
            if [ "$SINK_SELECTED_STATUS" == "FALSE" ]; then
                sleep 0.5
                continue
            fi
        fi

        pactl set-default-sink alsa_output.usb-Generic_USB_Audio-00.analog-stereo 2>/dev/null
        
        if [ $? -eq 0 ]; then
            echo FALSE > $HOME/.front-headphones-sink-selected-status
        else
            notify-send "front-headphones-switch-handler" "ERROR in setting speaker as output device"
        fi
    fi

    sleep 0.5
done

exit 0

So that each time I attach my headphones to the front AUX jack, the bash daemon detect them and it switches to new dedicated sink for redirecting the audio.