[clug] IRQ problems with 2.4.21 kernel

Nathan Robertson nathanr at nathanr.net
Tue Mar 2 22:48:09 GMT 2004

On Wed, 2004-03-03 at 09:30, Telek, John wrote:
> I have been trying to get a wireless PCI network card going and have
> noticed that evrything shares the same IRQ
> My card is a DWL-520 and have tried both the latest hostap and wlan-ng
> drivers. The card is prism 2.5 based and  is revision E1.
> The card works fine under windows which uses anyone of upto 32 irq
> lines. Linux still only uses 16.

You enable this by turning on multiple IO APICs in your kernel config,
then recompiling your kernel. It's located (in make menuconfig, at
least) about where you switch SMP on/off.

> When the driver loads for the wireless card, it complains about IRQ
> beind shared by two cards and lists the pci device id's.

The above may help. What are your Plug n Play settings in your BIOS and
kernel? Do they match up?


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