The secret is to add The following lines to to /etc/profile
eval $(dbus-launch); export DBUS_SESSION_BUS_ADDRESS DBUS_SESSION_BUS_PID
GSETTINGS_BACKEND=dconf gsettings set
org.gnome.desktop.a11y.applications screen-reader-enabled true
GSETTINGS_BACKEND=dconf gsettings set org.mate.interface accessibility true
GSETTINGS_BACKEND=dconf gsettings set org.mate.applications-at-visual
startup true
You have to add it in other case, Orca and Firefox will never cooperate
together.
It causes The at-spi assertion, but Firefox work. Sure, there are plenty
of bugs related to graphics error.
But Firefox is usable with Orca. Please do not forget to change sound
device in/etc/speech-dispatcher/speechd.conf
to The libao. I think, that speech-dispatcher autodetect sound server as
Pulseaudio by default, if The line is commentedby #
But if you will let Speech-dispatcher to work with Espeak according to
its default decision, you will occur issues. Letter by letter navigation
will not be reliable and you can occasionally get sockets related crash.
If you will use libao, youwill never occur crash related to speech
stability.