On Monday, June 02, 2014 5:32:13 pm Edward Tomasz Napierała wrote:
> Some machines, including ThinkPad T61, emit the following error message
> early during boot:
> CPU0: local APIC error 0x40
> The message itself doesn't seem to be much of a problem. However,
> every once in a while booting hangs just before that line. I've tracked
> that down to call to AcpiHwWritePort() at
> switch (Mode)
> case ACPI_SYS_MODE_ACPI:
> /* BIOS should have disabled ALL fixed and GP events */
> Status = AcpiHwWritePort (AcpiGbl_FADT.SmiCommand,
> (UINT32) AcpiGbl_FADT.AcpiEnable, 8);
> Any idea what might be going on?
This is probably triggering an SMI# to enter SMM mode where your BIOS does
God-knows-what but apparently triggers one of the local APIC local interrupts
while it is configured with an invalid vector (e.g. 0).
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