> > > so i guess i'm not able to disable the standard COM1 irq handler? > > "rmmod 8250" does the trick over here. (IIRC the module is called > "serial" in linux-2.4). > > > Erik Well, i'm totally lost now! anyways, going back to what i was trying to do, setserial gives this info: /bin/setserial -a /dev/ttyS0 # /bin/setserial -a /dev/ttyS0 /dev/ttyS0, Line 0, UART: 16550A, Port: 0x03f8, IRQ: 4 Baud_base: 115200, close_delay: 256, divisor: 0 closing_wait: 15360 Flags: spd_normal skip_test "rmmod 8250 " says "rmmod: module 8250 is not loaded". /proc/modules does not show any module 8250 or serial, though in /usr/src/linux-2.4.18-14/drivers/char/ there is a serial.c file. what should i do now? how do i find what standard modules loaded? and any driver for COM1 is there or not? -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/