[Bug 1928624] [NEW] Firefox does not honour PulseAudio settings to decide what audio output to use

[Fabrizio Gennari]

Public bug reported:

Ubuntu 21.04, Firefox 88.0.1.
The video card (Radeon RX 570) has HDMI and DisplayPort outputs. DisplayPort is used to connect to a monitor that also has loudspeakers. The PC also has headphones output.

In Settings/Audio, the box Output has a dropdown menu that lists, among
others, Headphones - Family 17h and HDMI/DisplayPort 5 - Ellesmere HDMI
Audio [Radeon RX 470/480/490 / 570/580/590].

When that dropdown is toggled, all applications (e.g. Video) change the
audio output, so the application audio can be heard on the selected
output. With the exception of Firefox, that always sends its audio
output to the headphones, irrespective of the dropdown.

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: audio pulseaudio sound

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Title:
  Firefox does not honour PulseAudio settings to decide what audio
  output to use

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