[Aspire 5750G, Intel CougarPoint HDMI, Digital Out, HDMI] Ear microphone capture in the earphones using headset

[Stiggia]

I'm using ubuntu 14.04.02. When i plug my hearphone via duoble jack i hear my microphone capture in the earphones.
Plugging only microphone jack i ear capture in the speakers, plugging only headphones jack i ear capture of the internal mic.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
Uname: Linux 3.13.0-46-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: stiggia 2097 F.... pulseaudio
                      stiggia 2405 F.... pulseaudio
CurrentDesktop: KDE
Date: Sun May 24 11:46:09 2015
InstallationDate: Installed on 2014-07-30 (297 days ago)
InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: stiggia 2097 F.... pulseaudio
                      stiggia 2405 F.... pulseaudio
 /dev/snd/seq: timidity 1309 F.... timidity
Symptom_Jack: Digital Out, HDMI
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: No sound at all
Title: [Aspire 5750G, Intel CougarPoint HDMI, Digital Out, HDMI] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/09/2012
dmi.bios.vendor: Acer
dmi.bios.version: V1.21
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: JE50_HR
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.21
dmi.modalias: dmi:bvnAcer:bvrV1.21:bd08/09/2012:svnAcer:pnAspire5750G:pvrV1.21:rvnAcer:rnJE50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.21:
dmi.product.name: Aspire 5750G
dmi.product.version: V1.21
dmi.sys.vendor: Acer

[Raymond (superquad-vortex2)]

control.16 {
  iface CARD
  name 'Internal Mic Phantom Jack'
  value true
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }
 control.17 {
  iface CARD
  name 'Mic Jack'
  value false
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }
 control.18 {
  iface CARD
  name 'Headphone Jack'
  value false
  comment {
   access read
   type BOOLEAN
   count 1
  }
 }
 control.19 {
  iface CARD
  name 'Speaker Phantom Jack'
  value true
  comment {
   access read
   type BOOLEAN
   count 1
  }

neither headphine nor mic were plugged

[Stiggia (oo-stiggia-oo)]

I used the automatic bug log generation, how do i submit the missing part?

[Stiggia (oo-stiggia-oo)]

I add an attachment token with headset plugged.

[Raymond (superquad-vortex2)]

Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 23 [74%] [0.00dB] [on]
  Front Right: Playback 23 [74%] [0.00dB] [on]

your hear mic signal because mic playback switch is ON

Node 0x0b [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Control: name="Internal Mic Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=3, ofs=0
  Control: name="Internal Mic Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=3, ofs=0
  Control: name="Mic Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Mic Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=0, ofs=0
  Control: name="Beep Playback Volume", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=4, ofs=0
  Control: name="Beep Playback Switch", index=0, device=0
    ControlAmp: chs=3, dir=In, idx=4, ofs=0
  Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1
  Amp-In vals: [0x17 0x17] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x16 0x16]
  Connection: 5
     0x18 0x19 0x1a 0x1b 0x1d

internal mic playback should be switch OFF to avoid feedback of internal speaker

Simple mixer control 'Internal Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 31
  Mono:
  Front Left: Playback 0 [0%] [-34.50dB] [off]
  Front Right: Playback 0 [0%] [-34.50dB] [off]

[Raymond (superquad-vortex2)]

recording from audio mixer node 0x0b is disabled on notebook because of auto mic switch

Node 0x23 [Audio Mixer] wcaps 0x20010b: Stereo Amp-In
  Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
  Amp-In vals: [0x00 0x00] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80]
  Connection: 6
     0x18 0x19 0x1a 0x1b 0x1d 0x0b

[Stiggia (oo-stiggia-oo)]

i'm not sure to have undestood what i should do

[Stiggia (oo-stiggia-oo)]

ok i did it.

opened alsamixer in a terminal pressed F3 and muted playback on mic.

Thank you.