9 Oct
2003
9 Oct
'03
9 a.m.
wes schreiner wrote:
jordan muscott wrote:
Ah.. thankyou, this is what I thought to be the case.
Ok to be honest I'm not gonna switch
distros...... but are you saying
that Redhat offers you extra software that allows you to change the
IRQs that your pci cards are on?
There is no such software on any distro. Your motherboard's BIOS
decides which PCI slots get which IRQs. In a few motherboards the BIOS
lets one select which IRQs get assigned to certain slots, but most
don't. So with most motherboards all one can do is move cards around
to different slots and then see what IRQ gets assigned. If your sound card and your ethernet card are sharing
an IRQ, that's
because those PCI slots used both have the same IRQ assignment. If you
swap just those two cards slot-for-slot they will end up with the same
IRQ again. Try moving just one of the cards to another slot. If all of
your slots are full then move multiple cards.
On some motherboards with some processors you can turn on Local APIC
support in your kernel config and get more IRQs to work with. Dual
processor motherboards, even if they have only one CPU installed, can
do this to get more IRQs. If you have dual CPUs you should already be
running a SMP kernel and you probably don't have IRQ assignment
problems. If you do, it's back to juggling cards.
wes
Again, thanks for the clear info.
Jordan.