/usr/lib/systemd/system/brltty.service is shipped with the brltty package version 4.2-2. If you have installed brltty, you should have it, so the sudo systemctl enable brltty.service command should work. If not, instead try the full path sudo systemctl enable /usr/lib/systemd/system/brltty.service However, the full path shouldn't be needed. ~Kyle http://kyle.tk/ -- "Kyle? ... She calls her cake, Kyle?" Out of This World, season 2 episode 21 - "The Amazing Evie"