Created attachment 874512 [details]
Working (expected) behavior when HDMI is plugged/unplugged
This is a video of how KDE Plasma Sound settings behave when a TV is plugged
and unplugged from the HDMI port.
The first time I connect the display, I have to choose the HDMI audio output,
which is fine. Whenever I unplug the display, audio switches back to the
internal speakers correctly. When I plug the display in again, it remembers my
settings from last time and correctly switches back to the external display
audio.