/etc/termcap includes visible bell for linux console?
if you use visible bell (i think most people do!)
if on bash or readline be sure you set bell-style visible on inputrc
add this line on /etc/termcap
under the "#Slackware 3.1 liunx...." session
kind of weird,
it's a basic feature but it needs this line to get the visible bell to work, i don't think people know how unless they search for it....
indeed, most other $TERM we uses today uses terminfo or it just works anyway
but i use the plain linux console often, too.