firefox-43 && no sound on MP3, MP4, HTML5

Jan Beich jbeich at
Sun May 1 11:30:03 UTC 2016

Matthias Apitz <guru at> writes:

> I: [(null)] main.c: This is PulseAudio 6.0

Can you upgrade the package to 8.0? But before that backup and remove
/usr/local/etc/pulse/ to start from a clean slate.

In general, there's no support for out of date packages. ;) I have no
clue if versions before 8.0 had different quirks. Ask gnome at .

> root at c720-r292778-amd64:~ # sysctl hw.snd.default_unit
> hw.snd.default_unit: 1

Did you run pacmd as root? Try as regular user e.g.,

  $ pkill pulse
  $ mv ~/.config/pulse $(mktemp -dt backup)

  $ pulseaudio &
  $ pacmd set-default-sink $(sysctl -n hw.snd.default_unit)
  $ firefox -no-remote -profile $(mktemp -dt firefox) &
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