apport information

** Attachment added: "HookError_source_firefox.txt"
   
https://bugs.launchpad.net/bugs/1874808/+attachment/5493042/+files/HookError_source_firefox.txt

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https://bugs.launchpad.net/bugs/1874808

Title:
  Twitch video can not be unmuted when media.autoplay.blocking_policy=2,
  media.autoplay.default=1

Status in Mozilla Firefox:
  New
Status in firefox package in Ubuntu:
  Triaged

Bug description:
  With `media.autoplay.blocking_policy` set to 2 and
  `media.autoplay.default` set to 1 (block audio, which is the default),
  a Twitch video can not be unmuted.

  == Steps to reproduce ==

  1. Open about:config
  2. Search for autoplay in the settings
  3. Set media.autoplay.default to 1 ("Block Audio", which is the default)
  4. Set media.autoplay.blocking_policy to 2
  5. Open a Twitch VOD, for instance https://www.twitch.tv/videos/280106033
  6. Try to unmute the video (either by clicking Twitch player's speaker 
control button, or by dragging the accompanying volume slider)

  == What I expect to happen ==
  For the audio to be unmuted.

  == What happens instead ==
  The audio remains muted, and the volume control/indicator remains in the 
muted position.

  == Other info ==
  This is present in Firefox 88. I tried to update the versions info below 
using apport-collect, but it failed.

  
  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: firefox 75.0+build3-0ubuntu1
  ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
  Uname: Linux 5.4.0-26-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  BuildID: 20200403170909
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 24 16:33:46 2020
  InstallationDate: Installed on 2016-10-13 (1289 days ago)
  InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=fi_FI.UTF-8
   SHELL=/bin/bash
  SourcePackage: firefox
  UpgradeStatus: No upgrade log present (probably fresh install)
  ---
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu27.16
  Architecture: amd64
  BuildID: 20210415204500
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2020-11-30 (148 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  Package: firefox 88.0+build2-0ubuntu0.20.04.1
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 5.8.0-50.56~20.04.1-generic 5.8.18
  Tags:  focal wayland-session
  Uname: Linux 5.8.0-50-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare ssh sudo vboxusers
  _MarkForUpload: True
  modified.conffile..etc.default.apport: [modified]
  mtime.conffile..etc.default.apport: 2020-11-30T20:24:48.587084

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