Found temporary solution.
When I install pavucontrol, there I am able to switch sound output on
running application (including firefox). But later when I change setup
(turn on or off my TV) then I must do it again this way.
Therefore I am unable to control my sound output using built-in sound
con
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: firefox (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1910387
Title:
Fi
