I've recently migrated from RH to Debian/Knoppix and I always run a server reading weather info from my weather station on /dev/ttyS0. Since my migration to Debian/Knoppix, that stopped working and I found out it's because the ttyS0 port as getting used by the brltty server. It's started in rcS.d.

when I ran /etc/init.d/brltty stop it still wouldn't stop so it had to be killed with "killall brltty"

Anyway, I thought this might be of interest to anybody expecting to use ttyS0.

I've not checked if this is related only to a Knoppix/hdd_install or if it does this from CDROM. I'm running from a knoppix_installer installation( v3.2 7/26/03 ).

cheers.