Date: Tue, 07 Sep 2004 22:42:14 +0400 From: Roman Kurakin <rik@cronyx.ru> To: Nate Lawson <nate@root.org> Cc: current@freebsd.org Subject: Re: Bug reports requested - acpi Message-ID: <413E0106.9060905@cronyx.ru> In-Reply-To: <413DFD6A.4030701@root.org> References: <412D02FE.2080805@root.org> <412F141E.5070102@cronyx.ru> <412F6283.7000900@root.org> <412F692D.7090007@cronyx.ru> <412FAAB2.3000407@root.org> <412FAD67.6050707@cronyx.ru> <413DF483.7050705@root.org> <413DF8A3.9060809@cronyx.ru> <413DFD6A.4030701@root.org>
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Nate Lawson wrote:
> 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 reboot.
>>>> 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").
default both enabled, so :
acpi.disabled - do not work
apic.disabled - do work
> 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 is rare.
>
> Thanks,
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