acer aspire 3003LC DSDT troubleshooting, reality check and FYI (error 1054 puzzle)

Someone sing out if I am making a big mistake here.
AFAIK: this laptop is has not already a fixed dsdt for me to use. Am doing all this in ubuntu 5.10 with 2.6.12 kernel. And I havn't done any programming in 15 years! ooh - err...

*** dsdt.dsl code modification log: acer aspire 3003LC ***

http://www.cpqlinux.com/acpi-howto.html#fix_broken_dsdt
... has fixes for most common issues

decompiling and recompiling gives 8 errors and 1 warning...

I get:
warning 2078 for _WAK method
error 1061 for \_PR.CPU0._PPC (6x object does not exist) error 1061 for Z007 (2x object does not exist)

got rid of the warning first - since I knew how to do that one:
=====

        Return(Package(0x02){0x00, 0x00})

inserted at the end of the method (before final curly brace.)
======

Now I get 8 errors and zero warnings.
The 8x 1061's still present...

"Object does not exist"
two possibilities - need to add \ to some scope variables scope (_OSI) should be scope (\_OSI)?
Change one at a time and recompile after each one. If no effect, undo.
OR: add "External (\_OSI)
(but where to? presumably at the start ... we'll see.)

===== from HOWTO ===
# Error 1022 - Object does not exist

Add "External (\_OSI)". The next version of the compiler understands that
_OSI is a reserved method name and the External won't be required.

# Error 1022 - Object does not exist

You should probably look for any "Scope" lines and add the leading "\" there that is missing:

Change from:
Scope(_SB_) {
to:
Scope(\_SB_) {

Also ignore any "name" lines that do not have the leading slash. I do not believe that the name lines would have to be modified in this manner. I believe that it is written in such a way that the "\" among other stuff is prepended to the beginning of these "name" lines.
=============

add External (Z007) in the definition block, these errors vanish. add External (\_PR.CPU0._PPC) these errors vanish but replaced by:

dsdt.dsl 151: Processor (CPU0, 0x00, 0x00008010, 0x06) {}
Error 1054 - ^ Name already exists in scope
(CPU0)

I can try fixing this error (plan A) or go through the scope statements (plan B).

Plan A: try to find out what error means or if anyone else has encountered it.
Google errormessage comes up blank.
ACIP HOWTO the sequel:
http://www.columbia.edu/~ariel/acpi/acpi_howto.html#dsdt_editing
suggests looking in:
http://www.columbia.edu/~ariel/acpi/acpi_howto.html#acpi_on_laptops
... to see if the error is documented.

I see a note that 2.6.13 fixes battery stuff? We'll see. Only have 2.6.12 ubuntu std kernel.
otherwise, a lot of reviews but no actual errors overcome and no specific mention of my laptop. Skimmed some acer reviews just in case - nada.

next stop: the ACPI spec is:
http://www.columbia.edu/~ariel/acpi/acpi_howto.html#specifications

plan B:... scope statements without preceding back-slash are:

149 scope(_PR)
3455 scope(_GPE)

changing these makes no difference. So I've put them back. restored the External declairation. So I'm back to error 1054, CPU0 already exists in scope.

mailing list: http://lists.sourceforge.net/lists/listinfo/acpi-devel

maybe someone here knows what this error message means... subscribing.
Meanwhile: resort to inspired guesswork and scientific method...

The function in question is (line numbers supplied by me):

(149) Scope (_PR)
(150) {
(151) Processor (CPU0, 0x00, 0x00008010, 0x06) {}
(152) }

Placing the External declairation *after* the line 152 seems to have eliminated this error altogether.
There are now no errors and iasl output is:

root@infrared:/home/simon/programming# iasl -tc dsdt.dsl

Intel ACPI Component Architecture
ASL Optimizing Compiler version 20050930 [Nov 20 2005] Copyright (C) 2000 - 2005 Intel Corporation Supports ACPI Specification Revision 3.0

ASL Input:  dsdt.dsl - 3474 lines, 121251 bytes, 1565 keywords
AML Output: DSDT.aml - 13981 bytes 377 named objects 1188 executable

opcodes

Compilation complete. 0 Errors, 0 Warnings, 0 Remarks, 542 Optimizations root@infrared:/home/simon/programming#

Now I am free to insert this into the initrd in /boot and thus bypass the bios dsdt.

Someone sing out if I am making a big mistake somewhere... in any case, I'd like to know what is going on (like - what am I doing?)

Thanks in advance... simon

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There are some mistake on some Acer laptop.
Sometimes, there is a Z00? inside a package that do not exist at all, even on a SSDT, and adding an
External(\Z007) won't fix anything.

If you have something like that:

    Name (PBST, Package (0x04)
    {
        0x00,
        Z007,
        Z007,
        0x2710
    })

it's very likely that you have to replace the two occurences of Z007 by Ones:

    Name (PBST, Package (0x04)
    {
        0x00,
        Ones,
        Ones,
        0x2710
    })

If the Z007 instance is not inside a package like that, then the above statement won't apply.

Cheers,

Bruno Ducrot

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.


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