USB/NE2000 IRQ conflict?

Gary Aitken freebsd at dreamchaser.org
Mon Jun 16 17:18:42 PDT 2003


I have a similar problem, so I'll wait before posting to see what 
suggestions others have for solutions to yours.
.
I've managed to hack my way around my problem by freeing up some low 
irqs -- disabling one of the com ports (irq 3) and the parallel port in 
the bios, and taking them out of my system configuration in a custom 
kernel.  I'm not sure I needed to get rid of the parallel port, but I'm 
not using it anyway.  It's a real hack, but doing so allowed my two 
NE2000 cards to be placed at irq 3 and 5, and then everything worked.  

Gary Aitken

freebsdQ at circusstreet.freeserve.co.uk wrote:

>I have an old motherboard (with AMIBios 2.5) which doesn't have any USB
>slots, so I bought a generic USB OHCI controller to use. Problem is,
>both it and my Realtek 8029 network card have been assigned irq 12 and
>now I am getting "ed0: device timeout" messages. I am running
>4.3-RELEASE.
>It seems to spot both cards on bootup and ifconfig looks normal (haven't
>looked at the USB setup yet because I want to get the network back
>first)
> 
>If I remove the USB card, I can use the network fine.
> 
>I can't seem to force the BIOS to assign an interrupt to each slot/card
>and nothing I have tried in the kernel configuration seems to have
>helped either. I would appreciate any help before I give up and try my
>ISA network card instead.
> 
>thanks
>Matt Proctor
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