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Vladimir's SCB2/Serverworks boots with and without "acpi=off", and in both cases the IOAPICS are set up properly, the device work, and there are the following messages: APIC error on CPU1: 00(40) APIC error on CPU0: 00(40) APIC error on CPU0: 40(40) APIC error on CPU0: 40(40) APIC error on CPU0: 40(40) These are the now infamous "Receive illegal vector" messages. I expect this chipset has a physical APIC bus (rather than the FSB delivery used today) which is mis-behaving. I've never heard of this being associated with an actual failure (such as a lost interrupt). This message is already KERN_DEBUG -- can't get any lower priority than that. Maybe we should put this message under apic_printk()? Since acpi=off doesn't make any difference, I recommend running in the default configuration without this parameter. ---- Jan's system has APIC error on CPU0: 02(02) Also seems to be receiving junk on the APIC bus. > The problem goes away with noapic or acpi=off, but of course that also > means you don't have IRQs > 15. My comment about PIC-mode probably being okay applies to this motherboard but not Vladimir's above. >>>Usually a crappy/broken/misdesigned motherboard. >Elitegroup L7S7A2 here. This is a SiS746 motherboard. This kind of error seems to be relatively common on SiS. -Len - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||
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