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Date: Sat, 18 Sep 2004 13:57:58 -0700
From: Nate Lawson <nate@root.org>
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To: "Moore, Robert" <robert.moore@intel.com>
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cc: sklauder@trimind.de
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Subject: Re: trouble overriding DSDT
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Moore, Robert wrote:
> You may have to enable tracing (acpi_dbg_level) to determine what is
> happening

> 
>>-----Original Message-----
>>
>>On Thu, Sep 16, 2004 at 03:30:00PM -0700, Nate Lawson wrote:
>>
>>>Sascha Klauder wrote:
>>>
>>>>ACPI: DSDT was overridden.
>>>>  ACPI-0374: *** Info: Table [DSDT] replaced by host OS
>>>>  ACPI-0380: *** Error: Looking up [_PCT] in namespace,
>>
>>AE_ALREADY_EXISTS
>>
>>>>  ACPI-1303: *** Error: [NULL NAME], AE_ALREADY_EXISTS
>>>>
>>>>followed by a kernel trap.  Could this be a problem with iasl or
>>>>did I missed something else?

To do this on freebsd, build the module with options ACPI_DEBUG and then 
set the loader variables of debug.acpi.layer and debug.acpi.level 
according to the man page.  I suggest to start with:

debug.acpi.layer="ACPI_ALL_COMPONENTS"
debug.acpi.level="ACPI_LV_ALL_EXCEPTIONS"

-Nate