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[meomic <micpub@xxxxxxxx>]

just wanted to report that under ubuntu 15.10 the subwoofer works as it should ie. it has low-pass filter and plays just the "basses" from any 'player' (using myself clementine / smplayer(mpv))
the quality of the bass i would say is comparable to that of a windows - cant tell for sure because so long time passed since this laptop saw windows(ran it for a few hours after it was bought).
if someone has any questions just ask - i can test smth if needed etc.

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https://bugs.launchpad.net/bugs/1040873

Title:
  [N56VZ, Realtek ALC663, Black Headphone Out, Right] No sound at all:
  Subwoofer not working

Status in alsa-driver package in Ubuntu:
  Triaged

Bug description:
  Hi,

  this bug is a fork of https://bugs.launchpad.net/ubuntu/+source/alsa-
  driver/+bug/871808 because #871808 stands for a different hardware
  with a different solution, so people may get confused.

  Here is a summary (see post #48 to #54 of #871808):
  The subwoofer of Asus N56VZ laptop doesn't work "out of the box".

  #sudo hda-jack-sense-test -a :
  *** Without subwoofer:
  Pin 0x1e (Black SPDIF Out): present = No
  *** With subwoofer:
  Pin 0x1e (Black SPDIF Out): present = Yes

  http://www.alsa-
  project.org/db/?f=2778e7f430aa95ae219d0b2bc3cb5e46abd0a33a

  --> There are two ways of making it work:

  #1
  a. Add to rc.local :
  echo 0x1e 0x99130112 > /sys/class/sound/hwC0D0/user_pin_configs
  echo 1 > /sys/class/sound/hwC0D0/reconfig
  b. Add options snd-hda-intel model=asus-mode4 in /etc/modprobe.d/alsa-base.conf
  c. Reboot
  d. Set the mode to "Analog Stereo Output" and then to "Analog Surround 5.1 output" in the sound settings panel. You have to do this each time you reboot!!!

  #2
  a. Add to rc.local :
  echo 0x16 0x99130111 > /sys/class/sound/hwC0D0/user_pin_configs
  echo 0x1e 0x99130112 > /sys/class/sound/hwC0D0/user_pin_configs
  echo 1 > /sys/class/sound/hwC0D0/reconfig
  b. Reboot
  c. Set the mode to "Analog Stereo Output" and then to "Analog Surround 5.1 output" in the sound settings panel. You have to do this each time you reboot!!!

  Both give the same results and fix the bug.

  --> Can you make it work out of the box?

  There is still two other bugs on this laptop :
  - crackling audio when playing with sound volume: see https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1040867
  - When I put the omputer in sleep mode, there is no way to get sound working on resume: should I open a new bug to investigate this?

  Regards
  Sam

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu1
  ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
  Uname: Linux 3.2.0-29-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  AplayDevices:
   **** List of PLAYBACK Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC663 Analog [ALC663 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  ApportVersion: 2.0.1-0ubuntu12
  Architecture: amd64
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC663 Analog [ALC663 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  sam        1898 F.... pulseaudio
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xf7a10000 irq 47'
     Mixer name	: 'Realtek ALC663'
     Components	: 'HDA:10ec0663,10431477,00100002'
     Controls      : 23
     Simple ctrls  : 13
  CheckboxSubmission: 54021779511d0213081a2b1707bf951c
  CheckboxSystem: 4c773cd91921f9618cc2f1893bc1a87a
  Date: Thu Aug 23 22:38:00 2012
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
  Symptom_Card: Built-in Audio - HDA Intel PCH
  Symptom_DevicesInUse:
   1898  sam       F.... pulseaudio
       PID ACCESS COMMAND
  Symptom_Jack: Black Headphone Out, Right
  Symptom_Type: No sound at all
  Title: [N56VZ, Realtek ALC663, Black Headphone Out, Right] No sound at all
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/11/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: N56VZ.204
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: N56VZ
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrN56VZ.204:bd05/11/2012:svnASUSTeKCOMPUTERINC.:pnN56VZ:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN56VZ:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: N56VZ
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.
  modified.conffile..etc.modprobe.d.alsa.base.conf: [modified]
  mtime.conffile..etc.modprobe.d.alsa.base.conf: 2012-08-23T22:27:03.314416

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