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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 1824103

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

If, due to the nature of the issue you have encountered, you are unable
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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/1824103

Title:
  The vioce which recored by Internal microphone gets noisy

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Test machine: ThinkPad X1 Carbon
  Image: Ubuntu Disco 19.04
  CPU: Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz (family: 0x6, model: 0x8e, 
stepping: 0xa)
  GPU: Intel Corporation Device [8086:5917] (rev 07) (prog-if 00 [VGA 
controller])
  BIOS: N23ET55W (1.30 )

  Steps:
  1. Install image 19.04
  2. Login as default user
  3. Open a terminal and type "$ arecord test.wav"
  4. Say something and let laptop recorded your words
  5. Cancel the record, please press 'Ctrl + C'
  6. Please type "$ aplay test.wav" in terminal
  7. Verify the quality of the voice.

  Expected result:
  The voice played smoothly.

  Actual result:
  The voice is noisy and fuzz.

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