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    SubjectRe: APIC problem report
    Christopher Schramm wrote:
    > Hi,
    > I found a problem with APIC on a desktop PC equipped with Asus' M2N,
    > running the manufacturer's AMI BIOS - version 0803.
    > I've tried booting Knoppix 5.3.1 (Kernel and GParted live
    > (Debian's 2.6.26-13). Both will only boot if noapic parameter is used.
    > Otherwise I get "MP-BIOS bug: 8254 timer not connected to IO-APIC"
    > resulting in a kernel panic.
    > apic=debug gives "ACPI: Core revision 20080321", "Version 80050010"
    > (twice), "ID: 0", "LVT0: 700", "LVT1:400" and "ESR value before enabling
    > vector: 0x00000004 after: 0x00000000".
    > Hope it's of some use (and the best place to report it)
    > Christopher

    Try booting with acpi_use_timer_override kernel parameter. The problem
    is likely the same one that shows up on my Asus A8N-SLI Deluxe with the
    latest 1805 BIOS. The kernel ignores ACPI timer overrides on NVIDIA
    chipsets since they have historically been broken, however in later BIOS
    versions this has been fixed and the override is now apparently required
    for the 8254 timer to function properly through the IO-APIC.

    That problem is still there in newer kernels, but it's not fatal since
    the kernel just routes the timer through the PIC instead..

     \ /
      Last update: 2009-03-21 01:47    [W:0.045 / U:10.772 seconds]
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