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On 2018-11-03T17:36:51+00:00 lukycrociato wrote:

Created attachment 279301
alsa-info

I always got this issue only on Linux, every distro I tried including
Manjaro Linux, Debian, ubuntu had this problem.

Basically the microphone input sounds always distorted and "robotic"
even on high pitch. In all the programs I tried.

Workarounds as listed on the ArchWiki --->
https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Microphone_crackling_with_Realtek_ALC892
have not changed anything.

Interesting thing though is that on FreeBSD this does not happen.

alsa-info on the attachments

Kernel version: Linux luky-MS-7A37 4.18.0-10-generic #11-Ubuntu SMP

alsa-version
Driver version:     k4.18.0-10-generic
Library version:    1.1.6
Utilities version:  1.1.6

Obviously this also happens on other kernels.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1801540/comments/2

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On 2018-11-27T17:14:54+00:00 lukycrociato wrote:

Created attachment 279675
Recording showing the noise

Reply at:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1801540/comments/12

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On 2018-12-19T13:05:23+00:00 lukycrociato wrote:

I may confirm that recording without pulseaudio using ffmpeg -alsa
produces the same disturbed sound

Reply at:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1801540/comments/16

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On 2018-12-20T11:52:30+00:00 lukycrociato wrote:

Motherboard model is an MSI B350M AM4 for Ryzen CPU's

Reply at:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1801540/comments/20


** Changed in: linux
       Status: Unknown => Confirmed

** Changed in: linux
   Importance: Unknown => Medium

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1801540

Title:
  Microphone distorted sound on ALC892

Status in Linux:
  Confirmed
Status in linux package in Ubuntu:
  Incomplete
Status in pulseaudio package in Ubuntu:
  New

Bug description:
  Not sure if I'll report this upstream but there is definitely an issue
  with microphone recording on my desktop, this is not happening on my
  laptop which has a different codec.

  Already tried all workarounds possible, no luck. Only with my desktop
  with this particular motherboard. No issues in Windows, the sound
  recorded in there is distorted and has some static and robotic tone on
  high-pitch.

  alsa-info on the attachments

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