I tried to set up soundmodem as an AX.25 device in order to run xastir on my machine. Unfortunately, Ubuntu by default has a bunch of services installed that prevent this. (Not so much prevent it as try to shove 100k of data through the 1200-baud soundmodem, which kills it and drives you nutty if the audio is turned up.)
Here’s what I did to get around this:
1. Change /etc/samba/smb.conf to include only the eth0 interface.
interface = eth0
2. Go into /etc/cups/cupsd.conf and turn off broadcasting (instructions here):
# Browsing was on.
#Browsing On
Browsing Off
BrowseInterval 0
# end trying to get around sm0 problem
3. Stop the AVAHI daemon by moving /etc/rc5.d/S18avahi-daemon to /etc/rc5.d/K18avahi-daemon and running /etc/rc5.d/K18avahi-daemon stop
Note that on Ubuntu 9.10, avahi has been moved into Upstart. Stop it with
sudo stop avahi-daemon
then edit /etc/init/avahi-daemon.conf and comment out the
#start on (filesystem
# and started dbus)
and
#respawn