irq allocation issues
James Wilkinson
fedora at westexe.demon.co.uk
Fri Apr 21 12:06:00 UTC 2006
Lonnie Smith wrote:
> I'm running 2.6.16-1.2080_FC5 and on an Asus A8N-VM CSM motherboard and
> am running into some interrupt issues. After a standard install and "yum
> upgrade", I get the following allocations:
>
> $ cat /proc/interrupts
> CPU0
> 0: 545863 IO-APIC-edge timer
> 1: 1197 IO-APIC-edge i8042
> 5: 6911 IO-APIC-edge ohci_hcd:usb1, ivtv0, HDA Intel,
> ehci_hcd:usb2, eth0, ohci1394
> 8: 0 IO-APIC-edge rtc
> 10: 0 IO-APIC-edge libata
> 11: 192 IO-APIC-edge libata
> 12: 16413 IO-APIC-edge i8042
> 14: 12700 IO-APIC-edge ide0
> 15: 19231 IO-APIC-edge ide1
<snip>
Sounds like a motherboard problem. You could look for an updated BIOS,
or you could try reverting to use the old-fashioned PIC-style interrupt
controller with the noapic kernel parameter.
You would do that by adding the word "noapic" (without quotes,
surrounded by spaces) into the appropriate "kernel" lines in
/boot/grub/grub.conf, or by editing this line in the grub startup menu.
Incidentally, are you running in 32 or 64 bit mode? Do you have a
dual-core processor?
Hope this helps,
James.
--
E-mail address: james | Remember, half-measures can be very effective if
@westexe.demon.co.uk | all you deal with are half-wits.
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