Using mgetty -r and minicom, mgetty does not print
/etc/issue to the minicom screen.
Do you get the issue file after you press enter a number of times?
Are you sure the connection is established? The man page / info page
states that the issue file will not be printed until mgetty is sure
that the connection is established when '-r' is used, so I suspect
that this is the intended behaviour. Please read the info page, and
if your experience is different than described, reopen the bug with