[Bug 1758744] [NEW] Crackling audio when '/usr/bin/speech-dispatcher' version 0.8.8-1 is running on 18.04

[Mitchell Riedstra]

Public bug reported:

Problem occurs shortly after pulse-audio is first used after login. I'm
able to reproduce this consistently by trying to play sound through
Firefox right after login, although speech-dispatcher eventually exits
and audio returns to normal.

Only occurs whilst `speech-dispatcher` is visible in `pavucontrol`,
killing `speech-dispatcher` solves the problem for me.

I was able to grab the exact command and arguments being run from `ps`:

`/usr/bin/speech-dispatcher --spawn --communication-method unix_socket
--socket-path /run/user/1000/speech-dispatcher/speechd.sock`

By running it I'm able to reliably trigger the crackling audio.

Other information:

Description:    Ubuntu Bionic Beaver (development branch)
Release:        18.04

speech-dispatcher:
  Installed: 0.8.8-1
  Candidate: 0.8.8-1
  Version table:
 *** 0.8.8-1 500
        500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
        100 /var/lib/dpkg/status

** Affects: speech-dispatcher (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1758744

Title:
  Crackling audio when '/usr/bin/speech-dispatcher' version 0.8.8-1 is
  running on 18.04

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