Re: IRQ conflict
On Sunday 15 September 2002 21:26, nate wrote:
> john gennard said:
> > I have two Realtek ND010 Fast Ethernet PCI cards on a box.
> > IRQ's 11 and 12 have been allocated (?by the hardware itself)
> > and I need 12 for my PS2 mouse.
> >
> > Using the 'irq_addr' option with ifconfig does not work - I get
> > the error "SIOCSIFMAP - operation not supported".
> >
> > There's very little on this box so I have no shortage of free
> > IRQ's. How do I go about changing the 12 to say 10?
> >
> > Woody with the 2.2.20 kernel installed in a fairly standard PC.
>
> your best bet will probably to change the PCI slot that the card
> which is using IRQ12 is in, usually motherboards assign a range of
> IRQs for each slot..some slots share IRQs(usually the first and/or
> last slot shares IRQs with other things).
>
> second would be to check the bios, some BIOSs have a way to
> specify that certain IRQs are reserved for ISA devices(e.g. PS/2).
> Many BIOSs also have a "reset configuration data" or "reset bios"
> options which tell the bios to re-scan the hardware, and that can
> make the system aware of your new NIC and assign it a different
> IRQ.
>
> third would be to change NIC vendors
>
> fourth would be to try to use a USB mouse
>
> nate
I'm grateful for the lucid explanation. I've worked through what you
say and surprised myself by understanding it. I've satisfactorily
reassigned IRQ12 and now have no conflicts.
Many thanks, john.
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