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From: David Kelly <dkelly@hiwaay.net>
Date: Mon, 28 Nov 2005 21:46:28 -0600
To: John Baldwin <jhb@freebsd.org>
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Cc: freebsd-acpi@freebsd.org
Subject: Re: Worked in RELENG_5, fails in RELENG_6
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On Nov 28, 2005, at 7:13 AM, John Baldwin wrote:

> On Saturday 26 November 2005 08:07 pm, David Kelly wrote:
>> Per instructions at
>> http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/acpi- 
>> debug.html
>>
>> System is Dell Poweredge 400SC, BIOS revision A06. Boot panics  
>> with ACPI
>> enabled.
>>
>> boot -v:
>> [too much to type]
>> ACPI-0237 *** Error: Incorrect table signature - wanted [FACS]  
>> found [   ]
>> ACPI-0359 *** Error: Could not get/install the FACS, AE_BAD_SIGNATURE
>> ACPI-0191 ...
>> ACPI-0213 ...
>> ...
>> panic: Using MADT but ACPI doesn't work.
>>
>> Have not figured out how to "boot -v" with ACPI disabled. That  
>> would be
>> a nice little thing to add to chapter 11.16.1 of the Handbook.
>
> At the loader prompt, do:
>
> 'set hint.acpi.0.disabled=1'
>
> and then 'boot' or 'boot -v'.

Downloaded and FLASHed BIOS from A06 to Dell's latest, A09 this  
evening. No improvement. Also built and installed a new kernel from  
cvsup this afternoon. No improvement.

Have a hyperthread-able P4 with hyperthreading disabled in the BIOS.  
Enabling HT did not prevent the panic.

Copy of /var/run/dmesg.boot using "boot -v" and acpi disabled as  
described above is at http://home.hiwaay.net/~dkelly/dmesg.boot

A curious thing is with HT disabled in BIOS FreeBSD still lists  
hyperthreading in the CPU capabilities.

Oh, and apparently the dmesg buffer isn't big enough to hold  
everything "boot -v" wants to say. Surely there is a way to make it  
bigger?


--
David Kelly N4HHE, dkelly@HiWAAY.net
========================================================================
Whom computers would destroy, they must first drive mad.