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

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

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

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https://bugs.launchpad.net/bugs/1853791

Title:
  External microphone can't work on some dell machines with the codec
  alc256 or alc236

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Bionic:
  Fix Committed
Status in linux source package in Disco:
  Fix Committed
Status in linux source package in Eoan:
  Fix Committed

Bug description:
  [Impact]
  The external microphone can't work on some dell machines with the
  codec alc256 or alc236

  [Fix]
  Need to apply the ALC255_FIXUP_DELL1_MIC_NO_PRESENCE, instead of
  adding a new pintbl in the quirk table, we use fallback table this
  time.

  [Test Case]
  tested the kernel with these patches, the external mic worked well.

  [Regression Risk]
  Low, just make the quirk applying more generic.

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