Problema acpi portátil

[colapso <colapsomine@gmail.com>]

Hola!

Intento activar acpi en mi portátil para usar el speedstep de los
centrino. Lo conseguí antes en Ubuntu, pero ahora no soy capaz en
Debian haciendo lo mismo...
Tengo un kernel 2.6.12 y he patcheado el initrd con el archivo
dsdt.asl de mi portátil en cuestión. El caso es que el indicador de la
batería de gnome no funciona...
Tengo esta salida en dmesg:

ACPI: Subsystem revision 20050309
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bca0 start_node dfe4bca0 return_node 00000000
........................................................................................................................
y luego más:

ISOFS: changing to secondary root
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND
    ACPI-0352: *** Error: Looking up [Z00C] in namespace, AE_NOT_FOUND
search_node dfe4bf40 start_node dfe4bf40 return_node 00000000
    ACPI-1138: *** Error: Method execution failed [\_SB_.BAT1._BST]
(Node dfe4be40), AE_NOT_FOUND


¿Cuál puede ser el problema?

Muchas gracias!