To fix you probable need to install alsa tools firts.
sudo vim /etc/modprobe.d/alsa-base.conf options snd-hda-intel model=asus-mode4 sudo vim /usr/share/pulseaudio/alsa-mixer/profile-sets/extra-hdmi.conf [Mapping analog-surround-21] device-strings = surround40:%f channel-map = front-left,front-right,lfe,lfe paths-output = analog-output analog-output-speaker priority = 7 direction = output sudo vim /etc/pulse/daemon.conf enable-lfe-remixing = yes |