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[Alexander Mishurov <ammishurov@xxxxxxxxx>]

$ grep -r Realtek /proc/asound/card*
/proc/asound/card0/codec#0:Codec: Realtek ALC283

Acer Aspire E3-111/112 uses combo jack for headset (CTIA, I suppose). By
default pavucontrol see nothing except internal mic. After I set dell-
headset-multi, system shows in pavucontrol's dropdown 'Headset
Microphone' and 'Microphone' in addition to 'Internal Microphone'. When
I plug headset, I can choose manualy 'Headset Microphone' and sound goes
through it, otherwise it goes through internal mic, but automatically
system can see only plugged in heaphones.

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https://bugs.launchpad.net/bugs/1446457

Title:
  [HDA-Intel - HDA Intel PCH, recording] No autoswitch

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  Acer E3-112
  Ubuntu 14.04, 14.10, 15.04 
  After plugging in headset only headset earphones detected, mic from headset not detected and recording is only from built in mic.

  Appending 'options snd-hda-intel model=dell-headset-multi' to
  /etc/modprobe.d/alsa-base.conf helps to tell xubuntu that headset mic
  may be plugged, but after plugging in, xubuntu doesn't automaticaly
  detect that mic is plugged, it can see only headset's earphones, so i
  need evreytime in pavucontrol tell xubuntu that mic is plugged in even
  after adding option.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.19.0-14.14-generic 3.19.3
  Uname: Linux 3.19.0-14-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  mishurov   2000 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Tue Apr 21 07:03:19 2015
  InstallationDate: Installed on 2015-04-04 (16 days ago)
  InstallationMedia: Xubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_Card: Built-in Audio - HDA Intel PCH
  Symptom_Type: No auto-switch between inputs
  Title: [HDA-Intel - HDA Intel PCH, recording] No autoswitch
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 08/20/2014
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.10
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: R2
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - A01 Board Version
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.10:bd08/20/2014:svnAcer:pnNC-E3-112-C97Q:pvrV1.10:rvnAcer:rnR2:rvrType2-A01BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: NC-E3-112-C97Q
  dmi.product.version: V1.10
  dmi.sys.vendor: Acer
  mtime.conffile..etc.modprobe.d.alsa.base.conf: 2015-04-21T06:35:28.960726

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