<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type"> <title></title> </head> <body bgcolor="#ffffff" text="#000000"> James Wilkinson wrote: <blockquote cite="mid20040722163844.GB3732@howells.westexe.demon.co.uk" type="cite"> <pre wrap="">Reshat Sabiq wrote: </pre> <blockquote type="cite"> <pre wrap="">The IDE, audio, modem , VGA compatible controller, FireWire, CardBus bridge, and USB Controller use IRQ 10. Wireless, and again USB controller use IRQ 5, according to lspci -v. </pre> </blockquote> <pre wrap=""> Aaron Gaudio replied: </pre> <blockquote type="cite"> <pre wrap="">Have you tried enabling ACPI? When everything uses the same IRQs, that is often a sign that you need ACPI to manage the interrupts... although I think ACPI is enabled by default in FC2. </pre> </blockquote> <pre wrap=""> There again, it could possibly be an APIC problem. (That's not a typo: there are two, vaguely related, Intel standards; one named ACPI and the other APIC). Try doing a grep -i apic /var/log/dmesg and if it comes up with ENABLING IO-APIC IRQs somewhere, see what putting "noapic" on the kernel command line does. Remember to keep an "emergency" unmodified entry in grub.conf! HTH, James. </pre> </blockquote> Thanks for the tips, guys. Yes, ACPI is enabled (from what i can see in the logs). And i tried passing noapic to both 2.6.5 and 2.6.6 kernels, with both atiixp, and atiixp-modem drivers. The results are pretty much the same. I'm now seeing that IRQ 5 is disabled with both drivers. Although i have seen some other users of R3000 posting that noapic helped them, there are so many variations of R3000, that mine appears to be different from those. Mine is R3000T (shared memory). The sound card is detected as IXP150 AC'97 Audio Controller (snd-atiixp). But to me it looks like it really needs atiixp-modem driver, which is still experimental and doesn't cut it. It appears i have 2 options: 1. Wait for atiixp-modem to become stable (or help make it so) 2. Plug a different sound card. I'll see what i can do. Thanks again, <rsa/> </body> </html>