2

Asus N750 has an external subwoofer, but it doesn't work on ubuntu. I tried to solve the problem as it was written in http://askubuntu.com/questions/189304/no-sound-from-external-subwoofer-sonic-master-on-an-asus-n76vm, but it doesn't work. In extra-hdmi.conf i added

[General]
auto-profiles = no

[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

and reboot, the only sound device is "dummy input".

Can you help me to solve this problem?

lspci -k | grep -i -A2 "multimedia\|audio" output:

00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
        Subsystem: Intel Corporation Device 2010
        Kernel driver in use: snd_hda_intel
--
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
        Subsystem: ASUSTeK Computer Inc. Device 129d
        Kernel driver in use: snd_hda_intel
Yauhen Vasileusky
  • 121

1 Answers1

0

I have found a temporary solution.

  1. sudo apt-get install alsa-tools-gui
  2. run hdajackretask
  3. Select a codec: ALC668
  4. Set "show unconnected pins"
  5. Find pin 0x1a
  6. Set "override" -> Internal speaker(LFE)
  7. Click install boot override
  8. In /etc/modprobe.d/alsa-base.conf add line options snd-hda-intel model=asus-mode4. It allows you to control the volume of the subwoofer via alsamixer
  9. Reboot

I still have problems with audio profiles(no 4.0 and 2.1 configurations in kmixer), but the subwoofer works now. The only problem is that it is now muted when i plug in headphones.

Michal Kováč
  • 123
Yauhen Vasileusky
  • 121