That odd IRQ could indeed explain alot of your problems in attempting to
communicate with your modem. Linux defaults the serial port IRQs to the
"typical" IRQ for that port (ie, IRQs 3 and 4). You need to explicitly
tell Linux that your serial port is at another IRQ by using:
setserial /dev/ttyS<X> irq <Y>..................
Wade,
After reading Steve's reply I had another thought as to the IRQ
assignment. Check your BIOS and if Plug and Play OS is set to Yes change it
No , boot back into Linux and run # cat /proc/pci and see if that has
changed the assignment.
Charles