GNOME speaker tests are always silent
Originally created by @anonym on #12549 (Redmine)
In System Tools > Settings > Sound > Test Speakers pressing any of
the “Test” buttons produce no sounds despite sound otherwise working.
This could confuse users trying to debug sounds issues. When I start
gnome-control-center
from a terminal, nothing is logged to
std{out,err}, and I see nothing in the journal. I’m wondering if the
audio files used for the test simply are missing because we don’t
install the relevant GNOME Debian package.