** Summary changed:

- The vioce which recored by Internal microphone gets noisy
+ aplay record file failed always.

** Description changed:

  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 
  BIOS: N23ET55W (1.30 )
  1. Install image 19.04
  2. Login as default user
- 3. Open a terminal and type "$ arecord test.wav"
+ 3. Open a terminal and type "$ arecord abc.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.
+ 6. Please type "$ aplay abc.wav" in terminal
  Expected result:
  The voice played smoothly.
  Actual result:
- The voice is noisy and fuzz.
+ Step 3, 
+ u@u-ThinkPad-X1-Carbon-6th:~$ arecord abc.wav
+ Recording WAVE 'abc.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
+ ^CAborted by signal Interrupt...
+ arecord: pcm_read:2145: read error: Interrupted system call
+ Step 6,
+ u@u-ThinkPad-X1-Carbon-6th:~$ aplay abc.wav 
+ ALSA lib pcm_dmix.c:1108:(snd_pcm_dmix_open) unable to open slave
+ aplay: main:828: audio open error: Device or resource busy

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  aplay record file failed always.

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