[BRLTTY] How do brltty should be started in case or a bluetooth or serial line connection

[Jason White]

Didier Spaier <didier at slint.fr> wrote:
> At the moment in an installed Slint, at startup the script rc.S starts
> brltty running "/etc/rc.d/rc.brltty start" if the script is executable.
> 
> This not actually necessary in case of an USB connection as udev takes
> care of starting a daemon a soon as a device is plugged in.
> 
> But is it still necessary if the display is connected through a serial
> line or bluetooth? I assume that the answer is yes reading the manual
> but would like a confirmation.


The answer is indeed yes. In the case of a serial port, BRLTTY needs to access
the port in order to detect an attached braille display. Bluetooth requires
detection of a paired device, which udev can't do. Think of it this way: udev
detects the Bluetooth controller, but you need BRLTTY to operate that
controller so as to search for an available braille display.