MansOS FAQ

Q: Ubuntu disconnects /dev/ttyUSB0 after a while. 'motelist' prints that CommPort is none

   $ motelist
   Reference  CommPort   Description
   ---------- ---------- ----------------------------------------
   UCC89MXV   (none)       Telos (Rev B 2004-09-27)

A: Uninstall brltty

  sudo apt-get remove brltty

Read more here: http://mail.millennium.berkeley.edu/pipermail/tinyos-devel/2007-June/001669.html

  Thought that folks might find this useful.
   
  Some may have noticed that Ubuntu Feisty Fawn has problems talking to
  TMote Sky nodes. The problem is that the Braille TTY driver wants to
  claim any device with the FTDI USB chipset. The fix is to run:
  
  sudo apt-get remove brltty
  
  Which clears this out and removes the dependencies.
  
  Matt