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** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1757584

Title:
  Let headset-mode initialization be called on Dell Precision 3930

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in linux-oem package in Ubuntu:
  Incomplete

Bug description:
  == SRU Justification ==
  [Impact]
  There is only one audio jack on this machine (codename: zuma-p), so
  there is only one output device (headphone), then the driver will not generate
  auto-mute control on this machine, without auto-mute, the headset-mode
  initialization routine will not be called, as a result, all audio devices
  can't work (output and input). To fix it, add a dummy lineout on this
  machine, then there are two output devices (headphone + lineout), the
  driver will create auto-mute control on this machine finally.

  Due to the patch conflicts, I prepared two patches, one is for artful+oem,
  the other is for bionic.

  [Test Case]
  plug the headset and play or record the sound on this machine, both playing
  and recording work well.

  [Fix]
  one commit from mainline kernel.

  [Regression Potential]
  very low, since this patch only applies to the specific Dell machine 
Precision 3930.

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