OK, I have a WYSE 55 terminal that works on ttyS0 just fine. It seems to work best in VT100 mode. I determined that the second serial port on the machine is ttyS1. However, even though the agettty lines in my inittab are exactly the same, the terminal works EXTREMELY slowly on the second serial port. It works, but it is unbelievably and unuseably slow.

This is what my inittab lines look like:

s1:12345:respawn:/sbin/agetty -L ttyS0 38400 vt100
s2:12345:respawn:/sbin/agetty -L ttyS1 38400 vt100

Anyone have a clue as to why that other serial port is not working properly. One note, the serial port that works fine is a built-in serial port on the machine. The one that is not working very well is on a card. Any and all help is greatly appreciated.

Also, I tried turning on hardware flow control for agetty for the second serial port but that did not seem to help.