Comment 8 for bug 401591

i don't now if i did things right
i simply modify the video.c file
changed 5710Z into 5715Z
saved

cp Makefile Makefile.old

nano Makefile and put this

obj-m += video.o

all:
        make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules

clean:
        make -C /lib/modules/$(shell uname -r)/build M=$(PWD) clean

then i did a make

i boot on other kernel (to be sure i can write the new module)
i copy video.ko in /lib/modules/2.6.31-4-generic/kernel/drivers/acpi/

reboot with kernel 2.6.31-4
and .... nothing changed :(

other stuff i did

cat /sys/devices/platform/acer-wmi/interface
WMID

grep -r . /proc/acpi/video
/proc/acpi/video/OVGA/DD05/EDID:<not supported>
/proc/acpi/video/OVGA/DD05/brightness:<not supported>
/proc/acpi/video/OVGA/DD05/state:state: 0x1d
/proc/acpi/video/OVGA/DD05/state:query: 0x00
/proc/acpi/video/OVGA/DD05/info:device_id: 0x0005
/proc/acpi/video/OVGA/DD05/info:type: UNKNOWN
/proc/acpi/video/OVGA/DD05/info:known by bios: no
/proc/acpi/video/OVGA/DD04/EDID:<not supported>
/proc/acpi/video/OVGA/DD04/brightness:<not supported>
/proc/acpi/video/OVGA/DD04/state:state: 0x1d
/proc/acpi/video/OVGA/DD04/state:query: 0x00
/proc/acpi/video/OVGA/DD04/info:device_id: 0x0004
/proc/acpi/video/OVGA/DD04/info:type: UNKNOWN
/proc/acpi/video/OVGA/DD04/info:known by bios: no
/proc/acpi/video/OVGA/DD03/EDID:<not supported>
/proc/acpi/video/OVGA/DD03/brightness:<not supported>
/proc/acpi/video/OVGA/DD03/state:state: 0x1d
/proc/acpi/video/OVGA/DD03/state:query: 0x00
/proc/acpi/video/OVGA/DD03/info:device_id: 0x0410
/proc/acpi/video/OVGA/DD03/info:type: UNKNOWN
/proc/acpi/video/OVGA/DD03/info:known by bios: no
/proc/acpi/video/OVGA/DD02/EDID:<not supported>
/proc/acpi/video/OVGA/DD02/brightness:<not supported>
/proc/acpi/video/OVGA/DD02/state:state: 0x1d
/proc/acpi/video/OVGA/DD02/state:query: 0x00
/proc/acpi/video/OVGA/DD02/info:device_id: 0x0240
/proc/acpi/video/OVGA/DD02/info:type: UNKNOWN
/proc/acpi/video/OVGA/DD02/info:known by bios: no
/proc/acpi/video/OVGA/DD01/EDID:<not supported>
/proc/acpi/video/OVGA/DD01/brightness:<not supported>
/proc/acpi/video/OVGA/DD01/state:state: 0x1d
/proc/acpi/video/OVGA/DD01/state:query: 0x00
/proc/acpi/video/OVGA/DD01/info:device_id: 0x0100
/proc/acpi/video/OVGA/DD01/info:type: UNKNOWN
/proc/acpi/video/OVGA/DD01/info:known by bios: no
/proc/acpi/video/OVGA/DOS:DOS setting: <0>
/proc/acpi/video/OVGA/POST:<not supported>
/proc/acpi/video/OVGA/POST_info:<not supported>
/proc/acpi/video/OVGA/ROM:<TODO>
/proc/acpi/video/OVGA/info:Switching heads: yes
/proc/acpi/video/OVGA/info:Video ROM: no
/proc/acpi/video/OVGA/info:Device to be POSTed on boot: no

and i case you need my acpidump, here it is

I'm not using KMS, because brigthness does not work on KMS with Intel (i now because on my other notebook brightness work only without KMS)