Answering my own message... On Wed, 2004-05-26 at 09:14, Lars E. Pettersson wrote: > I have been using the following lines in Fedora Core 1 without problems: > /bin/setserial /dev/ttyS4 port 0x280 irq 5 uart 16550 > /bin/setserial /dev/ttyS5 port 0x288 irq 5 uart 16550 I added baud_base 115200 to each line, and now it works. I.e.: /bin/setserial /dev/ttyS4 port 0x280 irq 5 uart 16550 baud_base 115200 /bin/setserial /dev/ttyS5 port 0x288 irq 5 uart 16550 baud_base 115200 /Lars