ethernet squashed by sound card (Sound Blaster Audigy 2)

[tflecht]

i'm not sure where to post this, but if this is the wrong place, i'm sure i'll get some quick feedback . i am having trouble getting my ethernet card to work, now that i've installed a sound blaster audigy 2.

when i boot from the gentoo livecd, i can succesfully ping another host on my intranet, but when i boot from the kernel i built myself, no dice. i've tried two different ethernet cards now, a linksys 5.1 (tulip driver), and a 8139too driver card. both work when i boot from livecd, neither does when i boot from my home build kernel. i've tried to strip out everything i can from the kernel except the ethernet driver, to no avail.

when i boot from livecd, ifconfig shows my ethernet card using irq 12, io 0x4000. when i boot from my kernel, irq 18, io 0x6000. for the life of me i can't figure out how to force either ethernet card's driver off of irq18, io0x6000. can anyone point me in the right direction?

thanks!

[sa]

I have a tulip style eth card and a audigy2 also. But I have no problems getting them both to work at the same time.
my eth card is at irq17 and the audigy2 is irq18.

I believe the cd's kernel is not using APIC therefore it cant use more than 15 irqs. If you believe your problem is IRQ;s then try disabling IO-APIC in the kernel.

I believe the only other way to change the irqs is through your bios.

If you cant figure it out can you send us more info?
Do you have any error messages in /var/log/* or any other error messages? is your ethernet driver compiled as a module? anything elses you might think of?

cya,
sa

[tflecht]

thanks for your response!
i think you are correct that this is an APIC issue. when i disable APIC in the bios, i am able to ping other hosts on my lan. to answer your other questions, i have tried both ethernet drivers as modules and built directly into the kernel (with the same results; works without APIC in the bios, doesn't with APIC in the bios). i see no errors in /var/log.
not that this is relevant to this forum, but i'll write it anyway . i'd be happy leaving APIC disabled in the bios, except then my windows XP won't boot. arrggh. i've tried anabling APIC in the kernel config under processor, but that doesn't seem to make a difference. thanks for your help. i'm going to search some more on APIC here, but if anyone knows how i can get my gentoo linux kernel to handle APIC, i would love to hear from you.

thanks!
-tim