Re: IRQ clash problems with 2.2.14 and 2.3.33?

From: Craig Whitmore (lennon@igrin.co.nz)
Date: Tue Jan 25 2000 - 05:44:33 EST


I have an ABit bx6 Rev 2 and it has shared 2 interrupts :-( (You have to)
one is shared with USB and the other is shared with the AGP Card
ARGH

----- Original Message -----
From: Riley Williams <rhw@MemAlpha.CX>
To: David Woodhouse <dwmw2@infradead.org>
Cc: Linux Kernel <linux-kernel@vger.rutgers.edu>
Sent: Tuesday, January 25, 2000 11:16 PM
Subject: Re: IRQ clash problems with 2.2.14 and 2.3.33?

> Hi David.
>
> > Unless, of course, the motherboard in question is an Abit BP6.
> > In which case, complain to Abit, because even when you tell its
> > BIOS that IRQ9 is reserved for Legacy ISA, it puts ACPI there.
>
> > Shift your 3c509 onto another IRQ and wait for a fixed BIOS.
>
> > Beware of making PCI IRQs share too much, though - I've found
> > that if it tries to make a PCI device share IRQs with the
> > on-board USB, then that PCI device can't actually generate any
> > interrupts.
>
> Is this last comment specific to the Abit BP6 or the 3c509, or is it a
> general warning relating to any PCI hardware?
>
> The reason I ask is that I have a system with three PCI Ethernet
> cards, all RealTek 8259's using the ne2k-pci driver, and the BIOS for
> some reason has put all three on IRQ 9, leaving IRQ's 10 and 11 unused
> as far as I can tell.
>
> Also, is this behaviour to be expected?
>
> Best wishes from Riley.
>
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>
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