[CentOS] Network card help please

Wed Sep 10 05:47:26 UTC 2008
John R Pierce <pierce at hogranch.com>

nate wrote:
> Gary wrote:
>> J> does LSPCI not even show the 3rd card?!?
>> No, not at all...
> If the PCI bus doesn't see it there's no way to get it working
> in linux(or any other OS for that matter).
> Perhaps there is an IRQ conflict, check the IRQs on the system,
> and try the NIC in a different PCI slot. Try disabling some
> on board features(parallel port, serial port etc if you don't
> need them) to free up IRQs.

IRQ's are fully sharable on PCI, all PCI devices can use a single 
hardware IRQ with no problems.

> Pull out the other NICs and just try that 3rd NIC to try to
> verify that the NIC itself is OK or not.

I'd suggest trying the NIC in a different slot.

> Many BIOSs print out the various PCI cards and their IRQs as
> part of the POST process, usually just before the boot loader
> kicks in, if yours does this make sure you see that 3rd NIC
> on there before linux boots up.

and in fact, that display often shows the bus.slot.func too, which is 
the same info shown on lspci