Linux: Asus N76 fix external bass speaker

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

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