linux-kernel - Questions regarding ACPI vs FADT dump on HP XW6200 using 2.6.16

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Date:	Mon, 2 Apr 2007 11:43:37 -0400
From:	"Fortier,Vincent [Montreal]" <Vincent.Fortier1@...GC.CA>
To:	<linux-kernel@...r.kernel.org>
Subject: Questions regarding ACPI vs FADT dump on HP XW6200 using 2.6.16 - 2.6.20 kernels?

Hi all,

In reference to this Bugzilla entry:
http://bugzilla.kernel.org/show_bug.cgi?id=7110

I'm getting ACPI errors in the dmesg:
[    7.443482] ACPI Error (evgpe-0711): No handler or method for GPE[
0], disabling event [20060707]
[    7.449881] ACPI Error (evgpe-0711): No handler or method for GPE[
1], disabling event [20060707]
[    7.456145] ACPI Error (evgpe-0711): No handler or method for GPE[
2], disabling event [20060707]
[    7.462271] ACPI Error (evgpe-0711): No handler or method for GPE[
5], disabling event [20060707]
[    7.468310] ACPI Error (evgpe-0711): No handler or method for GPE[
6], disabling event [20060707]
[    7.474260] ACPI Error (evgpe-0711): No handler or method for GPE[
7], disabling event [20060707]
[    7.480124] ACPI Error (evgpe-0711): No handler or method for GPE[
9], disabling event [20060707]
[    7.485893] ACPI Error (evgpe-0711): No handler or method for GPE[
A], disabling event [20060707]
[    7.491473] ACPI Error (evgpe-0711): No handler or method for GPE[
F], disabling event [20060707]
[    7.491484] ACPI Error (evgpe-0711): No handler or method for
GPE[10], disabling event [20060707]
[    7.491489] ACPI Error (evgpe-0711): No handler or method for
GPE[11], disabling event [20060707]
[    7.491494] ACPI Error (evgpe-0711): No handler or method for
GPE[12], disabling event [20060707]
[    7.491499] ACPI Error (evgpe-0711): No handler or method for
GPE[13], disabling event [20060707]
[    7.491504] ACPI Error (evgpe-0711): No handler or method for
GPE[14], disabling event [20060707]
[    7.491509] ACPI Error (evgpe-0711): No handler or method for
GPE[15], disabling event [20060707]
[    7.491514] ACPI Error (evgpe-0711): No handler or method for
GPE[16], disabling event [20060707]
[    7.491519] ACPI Error (evgpe-0711): No handler or method for
GPE[17], disabling event [20060707]
[    7.491527] ACPI Error (evgpe-0711): No handler or method for
GPE[19], disabling event [20060707]
[    7.491532] ACPI Error (evgpe-0711): No handler or method for
GPE[1A], disabling event [20060707]
[    7.491537] ACPI Error (evgpe-0711): No handler or method for
GPE[1B], disabling event [20060707]
[    7.491542] ACPI Error (evgpe-0711): No handler or method for
GPE[1C], disabling event [20060707]
[    7.491547] ACPI Error (evgpe-0711): No handler or method for
GPE[1D], disabling event [20060707]
[    7.491552] ACPI Error (evgpe-0711): No handler or method for
GPE[1E], disabling event [20060707]
[    7.491557] ACPI Error (evgpe-0711): No handler or method for
GPE[1F], disabling event [20060707]

The ACPI: FADT dmesg entry is:
[    0.000000] ACPI: RSDP (v002 COMPAQ                                )
@ 0x000e8e10
[    0.000000] ACPI: XSDT (v001 COMPAQ CPQ0063  0x20051222  0x00000000)
@ 0xbfff50ec
[    0.000000] ACPI: FADT (v003 COMPAQ TUMWATER 0x00000001  0x00000000)
@ 0xbfff52ac
[    0.000000] ACPI: SSDT (v001 COMPAQ  PROJECT 0x00000001 MSFT
0x0100000e) @ 0xbfff657a
[    0.000000] ACPI: MADT (v001 COMPAQ TUMWATER 0x00000001  0x00000000)
@ 0xbfff53b8
[    0.000000] ACPI: ASF! (v032 COMPAQ TUMWATER 0x00000001  0x00000000)
@ 0xbfff543c
[    0.000000] ACPI: MCFG (v001 COMPAQ TUMWATER 0x00000001  0x00000000)
@ 0xbfff54a6
[    0.000000] ACPI: DSDT (v001 COMPAQ     DSDT 0x00000001 MSFT
0x0100000e) @ 0x00000000

I've been told to use this command to dump this memory segment:
dd if=/dev/mem skip=$[0xbfff52ac] bs=1c count=244 2> /dev/null >
fadt.bin
But I'm always getting an empty file?

My questions are:
1) How can I dump the FADT ?
2) Could this be related to this memory detection bug
http://bugzilla.kernel.org/show_bug.cgi?id=7111 ?

Thnx!

- vin
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