> One hint from the dmesg output:
> 
>   com0 at jazzio0 addr 0xe0006000 intr 9: ns16550a, working fifo
>   com0: txfifo disabled
>   com0: console
> 
> To me 'txfifo disabled' is not a good thing...

Do not worry about this.

This is a hack to work around a problem on some Magnum derived
hardware, and I believe no bad thing happen about this.

(Unless fifo disabled, serial hardware doesn't really work on
 the hardware).
--
soda