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[Bug 1040873] Re: [pulseaudio-discuss] Profile switching on headphone plugging (was: LFE filter)


>> Hrm, that is actually a good question. In theory, I would expect
>> module-switch-on-port-available to switch profiles between 2.0 and 2.1
>> as headphones are plugged in and out, but in practice,
>>   - I'm not 100% sure if our "don't switch to HDMI" might prevent
>> switching from 2.1 to 2.0 when headphones are plugged in, and
>>   - As the 2.0 profile is available on speakers, that will continue to
>> be selected when headphones are unplugged.
>> So, while this is not directly related to whether there is an LFE filter
>> or not - we already have a 2.1, 5.1, etc, profiles - indeed the problem
>> might become worse with the LFE filter.
> Well, I have just tested how today's git version of pulseaudio (without
your patch) behaves when plugging headphones. Yes - the problem is
> The PC under test has analog outputs on the back panel that,
theoretically, can be used as analog 5.1 outputs, and also has headphone
and microphone sockets at the front panel.
> So, the test is:
> 1. Make sure something (I tested with a cable extender) is plugged in the
line output on the back panel.
> 2. Select the "analog stereo duplex" profile in pavucontrol.
> 3. Look at the Playback devices tab. It should say: Port: Line Out
(plugged in).
> 4. Plug in headphones at the front. Note that the port changes to:
Headphones (plugged in). I.e. exactly as expected.
> 5. Unplug the headphones, watch how the port changes back to Line Out
(plugged in).
> 5. Now select the Analog Surround 5.1 + Stereo Input as a profile. Now
the port stays as Line Out (plugged in), but the volume control becomes
> 6. Plug headphones in. Result: the port stays as Line Out (plugged in),
with 6-channel volume control, and speaker-test -c6 does not reach
> Sorry, I cannot retest this at home without additional jack-retasking
(which could make the result untrustworthy), because my home PC does not
have any audio sockets at the front panel.

I have doubt about changing 5.1 profile to stereo when headphone is plugged
since most user use 5.1 profile to watch movie, changing 5.1 profile to
stereo require stop playback of 5.1 and start stereo playback , how can the
application perform video audio sync for this kind of profile switching

Do pulseaudio switch back to 5.1 profile when headphone is pkugged ?


For those Asus N series notebook with external Sonic Master subwoofer,
Seem using jack detection of spdif pin complex for the propretiary jack of
the subwoofer , you need driver create an adhoc jack detection control if
you want to switch from stereo to 2.1 profile when the subwoofer is plugged

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

Status in alsa-driver package in Ubuntu:

Bug description:

  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


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

  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!!!

  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?


  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.
   **** 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
   **** List of CAPTURE Hardware Devices ****
   card 0: PCH [HDA Intel PCH], device 0: ALC663 Analog [ALC663 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
   /dev/snd/controlC0:  sam        1898 F.... pulseaudio
   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
   PATH=(custom, no user)
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
  Symptom_Card: Built-in Audio - HDA Intel PCH
   1898  sam       F.... pulseaudio
  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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