Hi,

From: Rafal Boni <rafal@pobox.com>
Subject: Problems reading ACPI battery status on IBM ThinkPad T30
Date: Sun, 11 Jan 2004 22:55:34 -0500

> 	acpi0: X/RSDT: OemId <IBM   ,TP-1I   ,00002060>, AslId < LTP,00000000>
> 	    ACPI-1290: *** Error: Method execution failed [\_SB_.PCI0.LPC_.FDC_._INI] (Node 0xc0a24460), AE_NOT_EXIST
> 	    ACPI-1290: *** Error: Method execution failed [\_SB_.PCI0.LPC_.EC__._INI] (Node 0xc0a1e860), AE_NOT_EXIST

<snip>
> 	    ACPI-0178: *** Error: Method execution failed [\_SB_.NEST._STA] (Node 0xc0a24320), AE_NOT_EXIST

These errors (many AE_NOT_EXIST) is due to missing support for
ACPI ECDT support.

I put my incomplete ECDT patch at
ftp://ftp.netbsd.org/pub/NetBSD/misc/kochi/acpica/acpi_ecdt_20031221.patch
(might not work right now)

> While performing this query, the kernel outputs:
> 	ACPI-1290: *** Error: Method execution failed [\_SB_.PCI0.LPC_.EC__.GBST] (Node 0xc0a1e140), AE_AML_INTERNAL
> 	ACPI-1290: *** Error: Method execution failed [\_SB_.PCI0.LPC_.EC__.BAT0._BST] (Node 0xc0a1e000), AE_AML_INTERNAL
> 	acpibat0: failed to evaluate _BST: AE_AML_INTERNAL

These errors are source of my headache for more than half a year:(
(I have ThinkPad X31 and have the same problem)

The intel people provided a solution for this problem and I committed
the patch against ACPI CA 20031029, but they implemented another
incomplete solution in 20031203, which is incompatible with the
previous one, so I had to drop the patch.

I've been aware that FreeBSD people are arguing in the acpi-jp list
and I planned to import their changes if it's proven to be stable.

Sorry for the mess.

Takayoshi Kochi