Setting backlight on openSuse 13.1?

Question

linux

Greetings dear ones.
Please help me set up hotkeys to adjust keyboard backlight on asus n56vz laptop. I found a topic where it says that you need to add acpi_osi = to the kernel boot parameters and everything will work. I didn't succeed.
Also, tell me how to set up switching of video cards and a subbuffer that came with the laptop on openSuse.
On the Internet I found jerky information. You can if not too lazy to throw links on the topic. I will be grateful.
I am using KDE environment. OpenSuse 13.1, Asus N56VB laptop. I used the official distribution for installation.
Thanks in advance. Not very strong on Linux.
ps How to determine which of the two video cards is currently working?

Answer 1

Fixed the backlight issue. A friend helped me write two simple scripts, which I then hung on hotkeys
Increase brightness

#!/bin/bash
cur_bright=$(cat /sys/class/leds/asus::kbd_backlight/brightness)
if [ $cur_bright -lt 3 ] ; then
cur_bright=$(($cur_bright + 1));
fi
echo $cur_bright > /sys/class/leds/asus::kbd_backlight/brightness

reduce brightness

#!/bin/bash
cur_bright=$(cat /sys/class/leds/asus::kbd_backlight/brightness)
if [ $cur_bright -lt 3 ] ; then
cur_bright=$(($cur_bright + 1));
fi
echo $cur_bright > /sys/class/leds/asus::kbd_backlight/brightness

If anyone needs it. =) For the scripts to work, you need to have permissions to the /sys/class/leds/asus::kbd_backlight/brightness file, which crash every time you reboot.
I solved the problem by adding the line chmod 4666 /sys/class/leds/asus::kbd_backlight/brightness to the file /etc/init.d/before.local
PS if you play with scripts, you can create light music.
Pss thanks a lot mate =)