[Bug 1512129] Re: Headphones not detected at startup

[Andrew Tribick]

Found the problem seems to be in alsamixer: updated description.

** Also affects: alsa-utils (Ubuntu)
   Importance: Undecided
       Status: New

** Description changed:

  The headphones are not detected if they are plugged in before the system
  starts up. To get sound out of my headphones, I need to unplug the
  headphones and plug them back in again. After this, sound is sent to the
  headphones.
  
  Reproducible: always
  
  Steps to reproduce:
  1. Plug in headphones
  2. Switch on computer, log into Kubuntu
  3. Attempt to play sound in any application, no sound produced.
  4. Unplug and replug headphones
  5. Sound works
  
  Expected behaviour:
  At step 3, sound should be output through the headphones.
+ 
+ The problem seems to be in alsamixer: when starting Kubuntu the
+ headphone volume is set to zero and the headphones are muted. Re-
+ plugging the headphones will unmute the headphones in alsamixer and set
+ to an audible volume.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: ubuntu-release-upgrader-core 1:15.10.14.1
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: KDE
  Date: Sun Nov  1 19:43:09 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-10-31 (1 days ago)
  InstallationMedia: Kubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  Symptom: dist-upgrade
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/bugs/1512129

Title:
  Headphones not detected at startup

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