[Xastir] ax.25 config

[Kyle Winfree]

Hi All,
     I'm trying to set up Xastir on an Eee 1000 that is running Xandros 
(Debian).  I have followed the instructions on 
http://www.xastir.org/wiki/HowTo:SoundModem exactly, but am receiving an 
error when I run soundmodem:
     sm[10710]: ioctl: TIOCSETD: Invalid argument (22)
Suggestions?
Thanks,
Kyle (KE7CDJ)