On 2020-09-30 20:02, al3xu5 / dotcommon wrote:

> Firefox, from a certain version onwards (sorry but I don't remember
> which one), removed support for ALSA from the default build
> configuration (maybe it will be restored in the future, I don't know
> if it has already been but I don't think so), keeping only pulseaudio
> support.
>
> This should explain why you didn't have audio on Firefox; while I can
> assume that the other problems depend on pulseaudio and its
> configuration (also because I seem to understand that they happened
> after you installed it...).

FWIW, I am on Debian buster, which just upgraded firefox-esr to 78; I
have no pulseaudio; and I just checked youtube and it works ok. So, I
doubt this explanation of Marc's problem.

--
Ian