Laptop-mode / laptop-mode-tools lcd brightness issue

I have an issue with my lcd brightness config in laptop-mode tools
here is the brightness values
[venky@ARCHROCKS ~]$ cat /proc/acpi/video/VID/LCD/brightness
levels: 72 24 12 24 36 48 60 72 84 100
current: 72
[venky@ARCHROCKS ~]$
following is my lcd-bightness.conf file under /etc/laptop-mode/conf.d
# Configuration file for Laptop Mode Tools module lcd-brightness.
# For more information, consult the laptop-mode.conf(8) manual page.
# LCD brightness settings
# Using these settings, you can make laptop mode tools automatically adjust
# your LCD's brightness settings. The settings are extremely simple -- they
# only allow for the execution of a command, nothing more. The reason for this
# is that LCD brightness settings are very different between laptop vendors.
# Suggestions for commands:
# * If your system has the file "/proc/acpi/video/VID/LCD/brightness" (VID may
# be VID1 or similar), use this file as BRIGHTNESS_OUTPUT, and use
# the command "echo <value>". The possible values can be listed using the
# command:
# cat /proc/acpi/video/VID/LCD/brightness
# * If you have a file /sys/class/backlight/.../brightness, then you can use
# that file as BRIGHTNESS_OUTPUT, and the command "echo <value>".
# As far as I understand it the values are between 0 and
# the value contained in the file /sys/class/backlight/.../max_brightness.
# * For Toshiba laptops, use the command "toshset" with the -lcd or -inten
# command. Read the toshset(1) manual page for more information on the
# parameters for this command. If you use this command, set
# BRIGHTNESS_OUTPUT to "/dev/null".
# IMPORTANT: In versions 1.36 and earlier, these settings were included in the
# main laptop-mode.conf configuration file. If they are still present, they
# overrule the settings in this file. To fix this, simply delete the settings
# from the main config file.
# Should laptop mode tools control LCD brightness?
CONTROL_BRIGHTNESS=1
# Commands to execute to set the brightness on your LCD
BATT_BRIGHTNESS_COMMAND="echo 24"
LM_AC_BRIGHTNESS_COMMAND="echo 100"
NOLM_AC_BRIGHTNESS_COMMAND="echo 72"
BRIGHTNESS_OUTPUT="/proc/acpi/video/VID/LCD/brightness"
so basically while in AC power i want full brightness when on battery i want one notch more than the minimum brightness and when laptop-mode is not running i want 2 notches less than maximum brightness.
the battery mode works fine when i unplug the computer but when i replug the AC power it goes to 72 instead of 100. I mean laptop mode is running coz when I remove ac power it goes to 24 again.
Am I doing something wrong?

When you plug in AC power, laptop-mode probably turns down, so LCD brightness is set to 72. It depends on if you have set in /etc/laptop-mode/laptop-mode.conf ENABLE_LAPTOP_MODE_ON_AC to 0 or 1.

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    NOT WORKING:
    - LCD brightness adjustment: FN+F5/F6 are detected correctly by acpid but nothing happens. I'm using the module sony-laptop included with kernel 2.6. Folder /sys/class/backlight is empty. I can use nvidia-settings to change COLOR BRIGHTNESS but this is NOT a good solution IMHO. I'd like to get the same capabilities I get running Windows Vista. (change LCD backlight).
    I've read somewhere it is a problem common to all laptop with the same NVIDIA videocard. Does anyone know a fix for this? I've also tried with  latest nvidia beta drivers with no success.
    - Hibernate/suspend. I tried with pm-tools to suspend/hibernate laptop but nothing is working correctly. I didn't investigate further. Has anyone got a quick solution for this?
    lspci output:
    00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 0c)
    00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 0c)
    00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Contoller #4 (rev 03)
    00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03)
    00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03)
    00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
    00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03)
    00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
    00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 03)
    00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 03)
    00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03)
    00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
    00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
    00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03)
    00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
    00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 03)
    00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03)
    00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 03)
    00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
    01:00.0 VGA compatible controller: nVidia Corporation GeForce 8400M GT (rev a1)
    06:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
    08:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8036 PCI-E Fast Ethernet Controller (rev 16)
    09:03.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
    09:03.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller
    09:03.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)
    Please help
    V.
    Last edited by Vins (2007-12-09 11:37:08)

    I recently bought a Sony FZ180, almost identical stats and hardware.
    I tried all the same suggestions, which worked fine on my old laptop, but will not for this one. If anyone can think of another method to control the backlight I would be grateful.
    Also, I tested the SD slot, the TI driver recognizes when a card is inserted, but no devices or mount-points are created.
    tifm_core: MMC/SD card detected in socket 0:1
    tifm0 : demand removing card from socket 0:1
    (The second line is from me removing the card, not a defective slot.)
    Everything else works great, though. Arch boots to a full KDE desktop much, much faster than my cleaned-up vista partition. I'm really happy overall.

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