Re: PROBLEM: additional serial ports on MS9830 board do not work(IRQ problems)

[Alan Cox]

> I tried the suggested option "irqpoll", but then the computer just freezes 
> when I do "od /dev/ttyS0" and touch the screen. No kernel panic, just a hard 
> freeze. I tried "acpi=noirq", "acpi=off" and disabling the APIC in the BIOS 
> setup, too. None of these made the serial irq work.

I suspect you need a BIOS which has correct tables for IRQ routing.

> Can you give me any useful pointers what to try next? Kernel configuration is 
> attached.

Vendor for BIOS update would be the obvious starting point.
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