** Changed in: linux (Ubuntu Bionic)
       Status: New => Fix Committed

** Changed in: linux (Ubuntu Cosmic)
       Status: New => Fix Committed

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https://bugs.launchpad.net/bugs/1831065

Title:
  does not detect headphone when there is no other output devices

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Invalid
Status in linux-oem package in Ubuntu:
  Fix Released
Status in linux source package in Bionic:
  Fix Committed
Status in linux-oem source package in Bionic:
  Fix Released
Status in linux source package in Cosmic:
  Fix Committed
Status in linux-oem source package in Cosmic:
  Fix Released

Bug description:
  These two patches are already in the kernel-v5.0, so only B and C need
  these two patches.

  [Impact]
  On a Dell machine, there is no other output devices but a headphone
  on it, when plugging headset, the headset-mic can't work.

  [Fix]
  The headphone detection method is buggy, the driver can't detect
  the headphone, then the driver will not initialize for headset-mic,
  after applying these patches, the problem is fixed.

  [Test Case]
  Plug headset and record the sound from headset-mic, it works well.

  [Regression Risk]
  Low. the patch just change the headphone detection function, and the
  function is already in the kernel from 5.0-rc, no bug is reported.

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