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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1922207

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

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

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https://bugs.launchpad.net/bugs/1922207

Title:
  Microphone and Mute/Mic-mute LEDs are not work on HP 640 G8 Laptop

Status in OEM Priority Project:
  Triaged
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  [Impact]
  The Micronphone and Mute/Mic-mute LEDs are not work when muting 
audio-output/microphone on HP 640 G8 laptop.

  [Fix]
  Add the quirks for them.

  [Test]
  After applying the quirk, the LEDs/function are work good on HP 640 G8 laptop.

  [Where problems could occur]
  If HP ships the different system boards design with the same subsystem ID of 
audio codec which is using different GPIO pins (different layout), then the 
quirk will not work (LEDs/function will not work when muting audio-output or 
microphone).

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