keyboard backlight in Ubuntu 12.04 on Chronos 7 NP700Z7C

I have installed ubuntu 12.04 on Chronos 7 NP700Z7C
I can't switch on keyboard backlight
Any ideas?

 

I got the opposite problem on my NP700Z5B, mine never turn off.

 

i haven't fix the function keys yet but he keyboard backlight can be controlled via sysfs

/sys/devices/class/leds/
in that directory you'll find the kbd entry and you just need to echo some number 0-8 into brightness.

 

where is no folder class in folder /sys/devices/ at my Ubuntu 12.04

 

Sorry, I wasn't in front of my computer.
The folder is: /sys/class/leds/samsung\:\:kbd_backlight

Example: echo 3 > /sys/class/leds/samsung\:\:kbd_backlight/brightness

To my surprise this is preserved beyond a reboot.

 

where is no folder samsung in folder /sys/class/leds =)

maybe a need to install samsung tools?

 

Indeed. I didn't check to see but it could be.

 

im not sure how to do this, what is the exact command to turn the keyboard lights on? im having difficulty figureing it out.

 

dalingrin gave the exact command (many thanks dalingrin!!). I will elaborate for the benefit of those who are not familiar how to enter this command:

1. Click the "Dash Home".
2. In the search bar, enter: terminal
3. Click on the "Terminal" icon in the results to start the terminal.
4. In terminal, enter: sudo su (and then press ENTER).
5. In terminal, enter: echo 8 > /sys/class/leds/samsung\:\:kbd_backlight/brightness (and then press ENTER).

I have found that this will only work if you are the root user (hence step 4), sudo'ing the command gives a "permission denied".

 

nice job! I have a Series 7 Ultra and it works in the same way but only 0-4 seems to work? Strange since the max_brightness is set to 8 :S