Disabling IRQ - eth0

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Hello,

I'm having a problem with nic on Fedora Core 3.  When first installed
the USB interface was enabled and eth0 and ohci_hdc were on the same IRQ
(#14).  After 20 min after boot the nic would stop working and I'd get
the following messages:

Mar 11 10:02:43 linux1 kernel: irq 14: nobody cared! (screaming
interrupt?)
Mar 11 10:02:43 linux1 kernel: irq 14: Please try booting with acpi=off
and report a bug
Mar 11 10:02:43 linux1 kernel:  [<02107fa9>] __report_bad_irq+0x3a/0x77
Mar 11 10:02:43 linux1 kernel:  [<02108530>] note_interrupt+0x19e/0x1c4
Mar 11 10:02:43 linux1 kernel:  [<02108ac7>] do_IRQ+0x24d/0x309
Mar 11 10:02:43 linux1 kernel:  [<022a007b>] pci_conf2_read+0xc6/0x1dd
Mar 11 10:02:43 linux1 kernel:  [<02124f00>] __do_softirq+0x2c/0x79
Mar 11 10:02:43 linux1 kernel:  [<021096ee>] do_softirq+0x46/0x4d
Mar 11 10:02:43 linux1 kernel:  =======================
Mar 11 10:02:43 linux1 kernel:  [<02108b77>] do_IRQ+0x2fd/0x309
Mar 11 10:02:43 linux1 kernel:  [<0210403b>] default_idle+0x23/0x26
Mar 11 10:02:43 linux1 kernel:  [<0210408c>] cpu_idle+0x1f/0x34
Mar 11 10:02:43 linux1 kernel:  [<023a86bb>] start_kernel+0x216/0x219
Mar 11 10:02:43 linux1 kernel: handlers:
Mar 11 10:02:43 linux1 kernel: [<0228080f>] (usb_hcd_irq+0x0/0x4b)
Mar 11 10:02:43 linux1 kernel: [<4290649e>] (tg3_interrupt+0x0/0x1c0
[tg3])
Mar 11 10:02:43 linux1 kernel: Disabling IRQ #14

After disabling USB in the BIOS (this is a server and I don't need it),
the OS moved eth0 to IRQ #5 and it is not sharing this IRQ with other
devices.  There are no other devices sharing any IRQ's in the whole
system.  The system stays connected to the network for about 6 hours
until the nic stops responding again.  I now receive this set of
messages:

Mar 11 14:44:05 linux1 kernel: irq 5: nobody cared! (screaming
interrupt?)
Mar 11 14:44:05 linux1 kernel: irq 5: Please try booting with acpi=off
and report a bug
Mar 11 14:44:05 linux1 kernel:  [<02107fa9>] __report_bad_irq+0x3a/0x77
Mar 11 14:44:05 linux1 kernel:  [<02108530>] note_interrupt+0x19e/0x1c4
Mar 11 14:44:05 linux1 kernel:  [<02108ac7>] do_IRQ+0x24d/0x309
Mar 11 14:44:05 linux1 kernel:  [<022a007b>] pci_conf2_read+0xc6/0x1dd
Mar 11 14:44:05 linux1 kernel:  [<02124f00>] __do_softirq+0x2c/0x79
Mar 11 14:44:05 linux1 kernel:  [<021096ee>] do_softirq+0x46/0x4d
Mar 11 14:44:05 linux1 kernel:  =======================
Mar 11 14:44:05 linux1 kernel:  [<02108b77>] do_IRQ+0x2fd/0x309
Mar 11 14:44:05 linux1 kernel:  [<0210403b>] default_idle+0x23/0x26
Mar 11 14:44:05 linux1 kernel:  [<0210408c>] cpu_idle+0x1f/0x34
Mar 11 14:44:05 linux1 kernel:  [<023a86bb>] start_kernel+0x216/0x219
Mar 11 14:44:05 linux1 kernel: handlers:
Mar 11 14:44:05 linux1 kernel: [<4290649e>] (tg3_interrupt+0x0/0x1c0
[tg3])
Mar 11 14:44:05 linux1 kernel: Disabling IRQ #5

Really it's the same message minus the usb_hcd handler.  I'm at a loss
as to what could be causing this.  Does anyone have an idea where I
should start or how to go about solving this?

Thanks,
Andrew


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