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SubjectRe: Linux 2.2.5 and PCI 3Com Vortex
Date
> What is odd is that when my 2.0.35 kernel boots, it tells me that my
> on-board PCI ethernet device (3Com Vortex) is on IRQ 14. When the
> 2.2.5 kernel boots, it tells me that it is on IRQ 19, and funnily enough,
> my ethernet device doesn't work right. It sends outbound ping packets,
> but never believes it receives any incoming frames--the classic symptom of
> interrupts being lost.
>
> Does anyone have any tips on how to troubleshoot this?

The 2.2 kernel tries to use the I/O APIC to do interrpt distribution. Not
every vendor seems to get their BIOS tables right. Try using the
"noapic" boot option

It'll be back on 14, back on irq's to the boot cpu only and hopefully back
working



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