Every time I install a new fedora, I think I lost sound
because the new feddora always picks the motherboard
audio output as the default, and I always listen via
the TV speakers over HDMI.
I always run:
gnome-control-center sound
to change the default output to HDMI. It apparently does
something undocumented to make HDMI out actually work.
I spent most of a day once trying to get any of the
command line tools to work, and I'd always get no sound
even when all the info I could print said sound was going
to HDMI. Never did figure that out.