kernel: Disabling IRQ
 

Hello,

I've seen this around and I've tried to work through it, but I can't figure out why I get an IRQ nobody cares message.

Everything works fine until I launch molecular modeling programs which use the GPL such as VMD, PyMol or Swiss-PDB then I get an IRQ interupt.

The interrupt occurs on IRQ 16 which is my eth0 device. # cat /proc/interrupts

CPU0
0: 266014 IO-APIC-edge timer
2: 0 XT-PIC cascade
8: 1 IO-APIC-edge rtc
11: 0 IO-APIC-edge i915@pci:0000:00:02.0
14: 2084 IO-APIC-edge ide0
16: 3739 IO-APIC-level eth0
18: 0 IO-APIC-level uhci_hcd
20: 13829 IO-APIC-level libata
21: 7576 IO-APIC-level uhci_hcd, ehci_hcd
22: 0 IO-APIC-level uhci_hcd
23: 0 IO-APIC-level uhci_hcd, Intel ICH6
NMI: 0
LOC: 266017
ERR: 0
MIS: 0

How can I fix this?

Thanks in advance for any help, Josh

more info
 

In case anyone has any helpful pointers, here is the tail of dmesg after initializing one of the graphic rendering programs:

irq 16: nobody cared!
[<c0103c8e>] dump_stack+0x1e/0x20
[<c019117b>] __report_bad_irq+0x2b/0x90
[<c01912a0>] note_interrupt+0x90/0xb0
[<c0190d55>] __do_IRQ+0x105/0x110
[<c010519c>] do_IRQ+0x1c/0x30
[<c0103822>] common_interrupt+0x1a/0x20
[<c01010f4>] cpu_idle+0x44/0x60
[<c03ec89d>] start_kernel+0x16d/0x1b0
[<c010019f>] 0xc010019f
handlers:
[<e0885400>] (tg3_interrupt+0x0/0x150 [tg3])
Disabling IRQ #16


I also meant that these programs use GL for graphics, not GPL.

also 'lspci -v' shows that 'IDE interface: Intel Corporation82801FB/FW (ICH6/ICH6W) SATA Controller ' is on IRQ 16, something not reported in /proc/interrupts

Solved.

Because everything is hard-wired to the mother board I couldn't try switching PCI slots.

Many posts suggested PNP in the bios, but I am stuck with Dell.

Here my only options were to either get a new bios chip or compile a kernel without PNP.

The kernel worked.