MacBook(Pro) with Nvidia graphics adapter display backlight fix call for testing

[_mario_]

Great, thanks, this is the one trying the .deb, get the same errors compiling the source.

uploaded new packages. as it turns out, i forgot to rename 2 functions.

ciao,
Mario

[heluani]

Great, now it builds, but the Kernel won't boot after installing this module. I'll try to find something relevant in my logs

R.

Edit: Well, it's going to be tough to find the reason. The thing is that none of the Mactel PPA packages builds on this Kernel.

[undoIT]

Hi, I write a script to save & restore backlight level with nvclock at boot/shutdown. It's not a big hack, but works.

Create a script:

gksudo gedit /etc/init.d/backlight-set

and copy this:

#! /bin/sh

case "$1" in
    start)
	HOME=/root /usr/local/bin/nvclock -S `cat /root/.backlight`
        ;;
    restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
    stop)
	HOME=/root /usr/local/bin/nvclock -i | grep Backlight | awk '{print $3}' > /root/.backlight
        ;;
    *)
        echo "Usage: $0 start|stop" >&2
        exit 3
        ;;
esac

Make it executable with:

sudo chmod +x /etc/init.d/backlight-set

Finally insert in runlevel with:

sudo update-rc.d backlight-set defaults

And enjoy (I hope).

Greets, ercoppa.

Hi ercoppa. Have you come up with a script like this for Jaunty? I wouldn't know how to adjust this since nvclock is not neccessary anymore.

[Purell]

I finally got mine working. Thanks for all the tips!

[ercoppa]

undoIT, I am already with Intrepid (no yet ADSL in my new house ) but without nvclock I think that the script is:

#! /bin/sh

case "$1" in
    start)
        echo `cat /root/.backlight` > /sys/class/backlight/nvidia_backlight/brightness
        ;;
    restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
    stop)
        cat /sys/class/backlight/nvidia_backlight/actual_brightness > /root/.backlight
        ;;
    *)
        echo "Usage: $0 start|stop" >&2
        exit 3
        ;;
esac

Please, test it for me

Greets, ercoppa.

[undoIT]

undoIT, I am already with Intrepid (no yet ADSL in my new house ) but without nvclock I think that the script is:

#! /bin/sh

case "$1" in
    start)
        echo `cat /root/.backlight` > /sys/class/backlight/nvidia_backlight/brightness
        ;;
    restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
    stop)
        cat /sys/class/backlight/nvidia_backlight/actual_brightness > /root/.backlight
        ;;
    *)
        echo "Usage: $0 start|stop" >&2
        exit 3
        ;;
esac

Please, test it for me

Greets, ercoppa.

It works! Thank you much

Do you think something similar could be done for the keyboard backlight? It also starts at max brightness each reboot.

[ercoppa]

I think (I don't have the PRO):

#! /bin/sh

case "$1" in
    start)
        echo `cat /root/.keybacklight` > /sys/class/leds/smc::kbd_backlight/brightness
        ;;
    restart|reload|force-reload)
        echo "Error: argument '$1' not supported" >&2
        exit 3
        ;;
    stop)
        cat /sys/class/leds/smc::kbd_backlight/actual_brightness > /root/.keybacklight
        ;;
    *)
        echo "Usage: $0 start|stop" >&2
        exit 3
        ;;
esac

Please check the path in bold, I have some doubts that is correct.

Greets, ercoppa.

[undoIT]

There is no actual_brightness, only brightness in that path. I tried creating the script with that but it doesn't seem to work.

[heluani]

Only usbhid-dkms and hid-dkms (from all packages in the PPA) don't compile on 2.6.29.4 so that shouldn't affect mbp-nvidia-bl. Has anyone tried succesfully booting this Kernel with mbp-nvidia-bl? my booting process dies at loading the modules and there's nothing interesting (to me) in the logs.

R.

[heluani]

Blacklisting the module and then loading it manually, the Kernel boots (last stable vanilla Kernel) but the console where one runs modprobe hangs (modprobe never exits)

The module loads and creates the backlight/mbp_backlight/ filesystem, but the process hangs trying to either read "actual_brightness" or write to "brightness"

R.


Edit: using Mario's nvidia_bl module works changing the brightness through nvidia_backlight/brightness and within X!!! I'm just surprised I didn't try this before trying mbp_nvidia_bl!.