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Date: Thu, 28 Feb 2013 18:38:10 +0200
From: Andriy Gapon <avg@FreeBSD.org>
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To: "Moore, Robert" <robert.moore@intel.com>
Subject: Re: panics due to buggy ACPI in Dell Latitude E6530?
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Cc: "freebsd-acpi@freebsd.org" <freebsd-acpi@FreeBSD.org>,
 kron <kron24@gmail.com>
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on 28/02/2013 17:44 Moore, Robert said the following:
>> ACPI Error: Method execution failed [\_SB_.BAT0._UID] (Node
>> 0xfffffe00094a51c0), AE_AML_NO_OPERAND (20110527/uteval-113)
> 
> Sorry, could not reproduce the problem here:
> 
> 
> - ex _SB_.BAT0._UID
> Evaluating \_SB_.BAT0._UID
> Evaluation of \_SB_.BAT0._UID returned object 000342A0, external buffer length 10
>   [Integer] = 0000000000000001

To me it is semi-obvious that the reported problem is a consequence of the FreeBSD
"heisenbug" that I reported before.  The one that messes up the internal state of
ACPICA and which I previously blamed either on ACPICA object cache or ACPICA
reference counting.  But now I am inclined to think that it is caused by something
in FreeBSD adaptation layer.

-- 
Andriy Gapon