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sound - Firefox doesn't play audio - Ask Ubuntu
https://askubuntu.com/questions/666041/firefox-doesnt-play-audio#:~:text=Other%20applications%20in%20Ubuntu%20play%20sounds%20as%20expected.,TV%20then%20Firefox%20audio%20correctly%20plays%20through%20TV.
sound - Firefox doesn't play audio - Ask Ubuntu
https://askubuntu.com/questions/666041/firefox-doesnt-play-audio
Because (as far as I know) firefox does not have any way to select an audio output device, if you change the output device for an application it will retain that information.... my guess is that at some point you, or someone else (or some application) has selected HDMI audio for firefox, and that has been stored.... you just need to change it back to the default device.
Ubuntu Linux: No sound at all in Firefox 65.0.1 | Firefox ...
https://support.mozilla.org/en-US/questions/1252773
Ubuntu Linux: No sound at all in Firefox 65.0.1. 2 replies 1 has this problem 7947 views; Last reply by OldReliable 2 years ago. OldReliable. 3/11/19, 6:00 AM. more options. Quote; All other apps (like Chrome, Spotify, and audio configuration sound test) sound fine. I've tried -safe-mode, re-installing, and removing duplicate Flash plugins. ...
No audio on Ubuntu/Linux : firefox
https://www.reddit.com/r/firefox/comments/f6tg8u/no_audio_on_ubuntulinux/
Go to settings , search for volume, audio or multimedia settings and then go to applications tab if there is one (I'm not using ubuntu though I used to) and select the output for the speakers you want! And this seems like an ubuntu issue, not firefox.
Firefox Goes PulseAudio Only, Leaves ALSA Users With No Sound
https://www.omgubuntu.co.uk/2017/03/firefox-52-no-sound-pulseaudio-alsa-linux
Lubuntu 16.04 LTS is one of the distros that use ALSA by default. Lubuntu users who upgraded to Firefox 52 through the regular update channel were, without warning, l eft with a web browser that plays no sound. Lubuntu 16.10 users are not affected as the distro switched to PulseAudio. Reader Adam Hunt is among those affected by the decision.
How to Fix the No Sound Issue in Ubuntu - Make Tech …
https://www.maketecheasier.com/fix-no-sound-issue-ubuntu/
An issue often faced by Ubuntu users after installing Ubuntu or upgrading to a new version is the sound problem, or more specifically, the “no-sound” problem. This can happen for a variety of reasons. Sometimes it is related to a misconfiguration in the speaker settings, or maybe your hardware is not well-supported.
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