: Can anyone explain why I have 2 systems, both with 2 serial ports which I
: use, yet I get the following:
: crucible:~$ cat /proc/interrupts
: 0: 31742599 timer
: 1: 75862 keyboard
: 2: 0 cascade
: 5: 710241 3c509
: 12: 174002 PS/2 Mouse
: 13: 1 math error
: 14: 565977 + ide0
: Where are IRQ 3 and 4 ?????
: Have I done something stupid ?
Yes. The serial ports are not in use right now and the IRQs are therefore not
assigned.