[BRLTTY] No braille support for Orca in Feisty

[hermann]

Hi all,
when I have started the Feisty live CD, and then have set up Orca with
braille support, there's no braille display appearing in Orca. On the
console I can use brltty, since it starts up automatically, when
connected via USB.
I've put this problem to the Orca list, however I got no answer till
now. So I ask whether this is known by the brltty team, and, if so, what
could be the cause of this? Maybe a problem of brlapi?
Regards
Hermann