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On Sun, 07 Sep 2003 18:37:48 -0400, Mathieu Desnoyers wrote: >IRQ problems with APIC enabled on a Neptune chipset, Pentium 90 SMP. > >Description > >Since kernel 2.4.21-pre2, IRQ problems are present on my Pentium 90 SMP, wi= >th >APIC enabled. It works well with 2.4.20 with APIC enabled, or with newer >kernels with "noapic" kernel option. There were a lot of I/O-APIC & MP table parsing changes in 2.4.21 for clustered apic. Chances are something there broke on your ancient BIOS & mobo. I can't immediately see anything obviously broken in 2.4.21: you'll have to identify the first pre-patch where things broke and then test or revert it piece by piece. >On kernel 2.4.21-pre2, there is a kernel oops before this, with a >"Dereferencing NULL pointer". You didn't run that through ksymoops and post it, so how is anyone supposed to be able to debug it? - 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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