No sound from external subwoofer "Sonic Master" on an Asus N76VM

Question

A few weeks ago I bought an Asus n76vm notebook looking forward to it's 'superior sound'. This sound system compromises an external subwoofer which amplifies bass and is connected to a special output jack. Ubuntu 12.04, however, does not detect this subwoofer. How could this be solved?

Any help would be gratefully appreciated

http://www.asus.com/Notebooks/Multimedia_Entertainment/N76VM/#specifications

Solution 1

to get the subwoofer I added on the file /etc/modprobe.d/alsa-base.conf this line:

options snd-hda-intel model=asus-mode4

then rebooted and selected 2.1 output in audio pref. It should work right away :) got this information from Keyboard backlight not working on an Asus N56V

hope it helped!

Solution 2

Which sound card are you using?

$ lspci | grep Audio
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)

If so, I think you have a common problem with many new laptops: you are lacking the 2.1 surround mode enabled in your audio driver. Here a solution that worked for me: intel audio fix

Here are three things to do:

1. echo 'options snd-hda-intel model=asus-mode4' | sudo tee -a /etc/modprobe.d/alsa-base.conf

2. sudo -H gedit /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 = out
   

   Note: On Asus N76VB running on the newer kernel 3.8.0-30, change the last line to be this instead:

   direction = output
   

3. sudo -H gedit /etc/pulse/daemon.conf

   enable-lfe-remixing = yes
   

4. Reboot.

You should now be able to see your "analog surround 2.1" among your possible Hardware settings in the sound menu.

"Analog Surround 4.0" is also working but changes the loudness from Front to Rear.

Additionally you can install the GNOME alsa mixer to boot your basses.

Comments

[Admin]

Try this : http://doc.ubuntu-fr.org/asus_n76vm#son It's in french but it's working for me.

[Admin]

This may be an anwser: askubuntu.com/questions/166261/….

[Admin]

worked for me! wiki.archlinux.org/index.php/ASUS_N55SF thanks for all the help given me!

[Andrea Borga]

can this fix proposal be made more generic? so that more people con fix their subwoofer behaviours?

[Can]

I did what you said and rebooted. But there is 4.0 option instead of 2.1 when I select 4.0 subwoofer works as "rear right" and rear left is empty. How can I add 2.1 to sound preferences?

[David Perry]

This works for me, but now ALL of my sound is output through the mini-subwoofer and none comes through my standard speakers at all.

[Giuseppe]

Working, but if i activate them, my mic stops working.

[Michal Kováč]

analog-output analog-output-speaker should not be on spearate line. This way only "Dummy output" is available. If there is paths-output = analog-output analog-output-speaker, the outputs are visible.

[dentex]

This solution doesn't work anymore :(