ECE497 Notes on Creating the ICASSP Image
Here's the changes I've made to the image Daniel sent me.
Serial port garbage
This fixed the problem. I'll keep testing to be sure it's really needed.
I have simply added the following two lines to root's
stty -parenb -parodd cs8 -inpck -istrip echo 0 > /sys/class/tty/ttyS2/device/sleep_timeout
A better fix would probably be to just add the second line to a rc.d startup script somewhere.
This suggestion came from this posting.