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[Paweł Kowalczyk <pawelek.kowalczyk@xxxxxxxxx>]

Public bug reported:

On Asus N551JM there is no sound from external subwoofer on fresh
Kubuntu 14.10 installation. There is no "Bass speaker" in alsamixer.
Adding "options snd-hda-intel model=asus-mode4" to /etc/modprobe.d/alsa-
base.conf makes "Bass speaker" appears in alsamixer but I was unable to
make it play any sound. On Win8 works out-of-box.

Alsa-base version: 1.0.25+dfsg-0ubuntu4.

Howto fix: redirect pin 0x1a to "Internal speaker (back)" using
HDAJackRetask on codec Realtek ALC668. Contents of /lib/firmware/hda-
jack-retask.fw:

[codec]
0x10ec0668 0x1043177d 0

[pincfg]
0x12 0x90a60130
0x14 0x90170110
0x15 0x04211020
0x16 0x40000000
0x18 0x411111f0
0x19 0x411111f0
0x1a 0x90170152
0x1b 0x411111f0
0x1d 0x40c6832d
0x1e 0x411111f0
0x1f 0x411111f0

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1405691

Title:
  No sound from subwoofer on Asus N551JM

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  On Asus N551JM there is no sound from external subwoofer on fresh
  Kubuntu 14.10 installation. There is no "Bass speaker" in alsamixer.
  Adding "options snd-hda-intel model=asus-mode4" to /etc/modprobe.d
  /alsa-base.conf makes "Bass speaker" appears in alsamixer but I was
  unable to make it play any sound. On Win8 works out-of-box.

  Alsa-base version: 1.0.25+dfsg-0ubuntu4.

  Howto fix: redirect pin 0x1a to "Internal speaker (back)" using
  HDAJackRetask on codec Realtek ALC668. Contents of /lib/firmware/hda-
  jack-retask.fw:

  [codec]
  0x10ec0668 0x1043177d 0

  [pincfg]
  0x12 0x90a60130
  0x14 0x90170110
  0x15 0x04211020
  0x16 0x40000000
  0x18 0x411111f0
  0x19 0x411111f0
  0x1a 0x90170152
  0x1b 0x411111f0
  0x1d 0x40c6832d
  0x1e 0x411111f0
  0x1f 0x411111f0

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https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1405691/+subscriptions