Hi, Now it works :) cool. But a problem stays. Now brltty runs, see my braille display, but every 7 seconds, I hear a beep then the braille screen displays "brltty 4.0". If I do a command, I have the screen, then 7 scennds later... "brltty 4.0". Why? This issue makes hard to use the software. Thanks for your answer. Regards, Jean-Philippe MENGUAL