def _fallback_to_available_output(self):
if len(self.active_comb) == <NUM_LIT:1>:<EOL><INDENT>self._choose_what_to_display(force_refresh=True)<EOL>self._apply()<EOL>self.py3.update()<EOL><DEDENT>
Fallback to the first available output when the active layout
was composed of only one output.

This allows us to avoid cases where you get stuck with a black sreen
on your laptop by switching back to the integrated screen
automatically !