Hello,
Might this be related to the fact the brltty 5.5 package
on arch linux is broken?
The problem is that libbrlapi as used with orca and
python-brlapi defaults to both key and polkit auth method.
Since the server part (brltty it-self) is built without
polkit support the brlapi connection never works unless
you will reconfigure brltty by uncommenting line like this
inside /etc/brltty.conf .
api-parameters Auth=keyfile:/etc/brlapi.key # Require
authentication key
After uncommenting this and restarting brltty orca should be
able to connect and it will hopefully also stop disabling
its braille support. My guess is that it's disabling the
braille support for you because it can't connect to brlapi
server.