Re: why inter-changing pci slot works?


Himanshu Chauhan wrote:

Hello group!

Sometime it happens that two adjacent PCI cards don't work. But as you
interchange their slots. The pair starts working. Why is it so?

Is it related to the priority of the IRQs?

Thanks

There could be a lot of reasons. I think the three most common are:

1) One of the slots shares an IRQ with an on-board device, and the
drivers of the on-board device and the card you put in that slot can't
cooperate.

2) The two slots share an IRQ with each other, and the two devices
can't cooperate.

3) Some of the slots are different and some of the device won't work
properly in some of the slots.

It would help if you were more specific. For example, when you say
"interchange their slots" do you mean swap the two devices? Or move one
of the devices to an empty slot? What devices?

DS

.

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