On Fri, Jan 30, 2004 at 01:11:19PM -0500, John Baldwin wrote: > > Can you provide a dmesg? IRQ20 on your box is a PCI interrupt and PCI > interrupts are level/lo, not level/hi. To top it off, ACPI states that the > SCI is supposed to always be level/lo. You must have a very broken BIOS to > get a storm now. > I've attached my dmesg -v output. Well, I've notice intpin 20 polarity difference between before and after MADT change. Certainly the disaster arose by my BIOS's fault, I suppose. --- dmesg_before Sat Jan 31 07:48:39 2004 +++ dmesg_after Sat Jan 31 07:42:28 2004 ... +MADT: Forcing active-lo polarity and level trigger for IRQ 9 +ioapic0: intpin 20 polarity: active-lo ioapic0: intpin 20 trigger: level -ioapic0: intpin 20 polarity: active-hi ... Can this problem be addressed by overriding fixed DSDT( by loading good enough aml code)? If so, /methinks he will spend this weekend studying about acpi and fixing the faulty BIOS. :-)
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