I have a Fedora Core 3 box running with a PCI Interrupt card (adlink pci7248) and a reflective memomry communications card for an IIOC IO Chassis.

When both cards are installed _and_ in use, the system goes into a full lock and will not respond on anything except a pull of the power. At first, these lockups happened every time the IO system was written to. I disabled the onboard serial and paralell ports and the lockups dropped to about one every 30 minutes of constant use. However, when either one of the cards is installed without the other, the system works wonderfully.

We have other identical boxes with the same interrupt card and have never locked up in the many months they have been running.

Thanks for any help!




/proc/version:
Linux version 2.6.9-1.667smp (bhcompile@tweety.build.redhat.com) (gcc version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)) #1 SMP Tue Nov 2 14:59:52 EST 2004


/proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 16536012 16545441 16541530 16535464 IO-APIC-edge timer
1: 123 293 204 17 IO-APIC-edge i8042
8: 0 0 0 1 IO-APIC-edge rtc
9: 0 0 0 0 IO-APIC-level acpi
12: 8550 2099 16 13917 IO-APIC-edge i8042
14: 6 296399 296603 7 IO-APIC-edge ide0
169: 50910 5 6 6 IO-APIC-level uhci_hcd, eth0
177: 0 0 0 0 IO-APIC-level uhci_hcd
185: 0 0 0 0 IO-APIC-level uhci_hcd, pci7248
193: 0 0 0 0 IO-APIC-level ehci_hcd
217: 34352 3840 5901 34781 IO-APIC-level ioc0
NMI: 0 0 0 0
LOC: 66160764 66160763 66161746 66161745
ERR: 0
MIS: 0