--If you want to stop brltty from starting permanently. you have a couple of options.

o mkdir /etc/rcS.d/disabled; Go into /etc/rcS.d and mv the S??brltty symlink to the disabled dir

o mv S??brltty ss??brltty (my method)

o apt-get remove --purge brltty
that woudl work or what I did rm -rf /etc/rc.S.d/S*brltty since I have no plans to need brail in the near future. knock on wood.