Bug reports requested - acpi
nate at root.org
Tue Sep 7 11:26:56 PDT 2004
Roman Kurakin wrote:
> Nate Lawson wrote:
>> Roman Kurakin wrote:
>>> Nate Lawson:
>>>> set hint.apic.0.disabled="1" at the loader prompt
>>> I'll try this tomorrow since I am going to sleep now. I hope it will
>>> If not I'll try to get to the work to fix its state.
>> I have not heard back from you about whether disabling the APIC (not
>> ACPI) alone fixes the problem.
> My answer was:
> I was unaware of all that safe mode turns off, and than I last time
> check this I ovelooked
> that apic is also disabled. It seems that problem with APIC.
> But could you tell me how changes in ACPICA affect APIC code?
> Sorry if it was not very clean. Yes, disabling apic helps.
Please answer yes or no: ACPI enabled but APIC disabled works 100%?
Safe mode disables both ACPI and APIC so it's not a good test of where
the problem is. You should probably also test with ACPI disabled but
APIC enabled ("set hint.acpi.0.disabled=1").
The APIC code has two methods of enumerating PIC devices: ACPI and MP
table. With ACPI enabled, the APIC code gets its info from the MADT
table. With ACPI disabled, it uses the MP table. Many older (< 2001)
systems have problems with their MADT but an ok MP table. I think there
are a few systems that have a correct MADT but flawed MP table but that
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