[Bug 1291862] Re: [soundnua]mic volume adjust bar is gray if you open sound-nua input tab earlier than plugging micphone

[Bin Li]

For trusty, I made a patch to disable input bar when there are no input
devices.

** Also affects: unity-control-center (Ubuntu)
   Importance: Undecided
       Status: New

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Title:
  [soundnua]mic volume adjust bar is gray if you open sound-nua input
  tab earlier than plugging micphone

Status in GNOME Control Center:
  New
Status in OEM Priority Project:
  Confirmed
Status in “gnome-control-center” package in Ubuntu:
  Confirmed
Status in “unity-control-center” package in Ubuntu:
  New

Bug description:
  gnome-control-center 1:3.4.2-0ubuntu0.13.1 in precise updates.
  In laptop you can't reproduce this issue, cause there have 'Internal Microphone' already.
  I find this issue im my PC, there are two jacks in front panel, input and output.

  1. Install system and log in to Desktop
  2. Connect the headphone in front panel
  3. Open sound settings menu and click Input tab

  I made an screenshot for it.

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