[pulseaudio-tickets] [Bug 104862] New: Apps using microphone cause system sound to crackle and echo

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104862

            Bug ID: 104862
           Summary: Apps using microphone cause system sound to crackle
                    and echo
           Product: PulseAudio
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: core
          Assignee: pulseaudio-bugs at lists.freedesktop.org
          Reporter: domenico.iezzi.201 at gmail.com
        QA Contact: pulseaudio-bugs at lists.freedesktop.org
                CC: lennart at poettering.net

Created attachment 137053
  --> https://bugs.freedesktop.org/attachment.cgi?id=137053&action=edit
pulseaudio log

After launching an app that needs microphone, like for example Discord or
Telegram-Desktop, system sound starts to crackle and echoing. Then, if I start
randomly changing system volume up/down for some seconds, the audio will fix
itself. I first thought it was a Discord only problem, but it will happen with
every application accessing microphone.

I have tried following these steps without success:
https://wiki.archlinux.org/index.php/PulseAudio/Troubleshooting#Glitches.2C_skips_or_crackling

Here are some reports from the discord subreddit, people having similar
problems:

https://www.reddit.com/r/discordapp/comments/7kuki9/microphone_crackling_only_on_discord_linux/
https://www.reddit.com/r/discordapp/comments/7si7s3/linux_crackling_sound_in_application/

but since everyone either fixed the problem in a different way or didn't
succeed (like me), I supposed it was a pulseaudio problem. I attached
pulseaudio log while launching discord and experiencing the problem.


OS: Archlinux
Linux Version: every version since mid 2017 (when I installed arch)
Pulseaudio version: every version since mid 2017

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