Ubuntu – Disable brightness and keyboard back-light at start-up

backlightbrightnesskeyboard

I'm new with Linux and I have an issue that I have being researching and have not been able to find a solution so far. I was wondering if any help can be given. I have an Asus Q500A with Win-8 and Ubuntu 12.04 64 bit and Whenever i log-in to Ubuntu, it does so with full screen brightness and keyboard back-light at full . How do i get rid of this? How can I tweak the start-up setting for screen brightness and disable keyboard back-light at start-up?

Note: I already tried this and is not working.

Add this to /etc/rc.local:

echo '2' > /sys/devices/pci0000:00/0000:00:02.0/backlight/acpi_video0/brightness
echo '0' > /sys/devices/platform/applesmc.768/leds/smc::kbd_backlight/brightness

Best Answer

To turn off the keyboard backlight on boot, you need to add this to /etc/rc.local:

echo '0' > /sys/devices/platform/[a name related to your laptop ]/leds/smc::kbd_backlight/brightness

You have an Asus laptop but you input applesmc.768 so it didn't work. For my case I added to /etc/rc.local the following line:

echo '0' > /sys/devices/platform/dell-laptop/leds/dell\:\:kbd_backlight/brightness

and it worked.

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Ubuntu – Macbook Pro boots with full screen brightness and keyboard backlight

To fix the screen brightness on my Macbook I stopped the apple_bl kernel module from being loaded. This seem to fix this for me.

Create a file called: /etc/modprobe.d/blacklist-applebl.conf
In the above file add the line:
```
 blacklist apple_bl
```
Reboot.

Ubuntu – Can’t adjust keyboard backlight on Asus ROG Strix G Laptop

If this link doesn't work try this one.

After downloading and extracting it to the home folder run these

cd rogauracore-retool
autoreconf -i
./configure
make
sudo make install

Hope it works for you!!

To control

Usage:

sudo rogauracore COMMAND ARGUMENTS

Supported commands and usage:

single_static COLOR
single_breathing COLOR1 [COLOR2] [SPEED]
single_pulsing COLOR SPEED
single_colorcycle SPEED
multi_static COLOR1 COLOR2 COLOR3 COLOR4
multi_breathing COLOR1 COLOR2 COLOR3 COLOR4 SPEED
rainbow [SPEED]
brightness BRIGHTNESS 

red         lime        turquoise   blue        magenta     hotPink     
orange      green       cyan        indigo      pink        white       
yellow      teal        skyBlue     violet      deepPink    black

COLOR argument(s) should be given as color names, or hex values like ff0000.
SPEED argument should be given as slow, medium, or fast, or integers 1 - 3.
BRIGHTNESS values should be given as off, low, medium, high, or integers 0 - 3.

Best Answer

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Ubuntu – Macbook Pro boots with full screen brightness and keyboard backlight

Ubuntu – Can’t adjust keyboard backlight on Asus ROG Strix G Laptop

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