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Keyboard backlight on Asus notebook
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vanger
n00b
n00b


Joined: 04 Jan 2014
Posts: 56

PostPosted: Fri Jan 17, 2014 4:39 pm    Post subject: Keyboard backlight on Asus notebook Reply with quote

Hello!

I'm trying to adjust keyboard backlight on the Asus n76vb notebook. Unsuccessfully.

Code:
ls /sys/class/backlingt
acpi_video0
acpi_video1
intel_backlight

All three directories are dealed with a monitor backlight.

Maybe, I should activate some kernel options. But which ones?

Code:
cat /usr/src/linux | grep ASUS
# CONFIG_USB_PEGASUS is not set
CONFIG_ASUS_LAPTOP=m
CONFIG_ASUS_WMI=m
CONFIG_ASUS_NB_WMI=m


Here is xorg.conf if it's important: http://pastebin.com/nWAPCpB0
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DONAHUE
Watchman
Watchman


Joined: 09 Dec 2006
Posts: 7553
Location: Goose Creek SC

PostPosted: Fri Jan 17, 2014 8:27 pm    Post subject: Reply with quote

https://bugs.launchpad.net/asus-keyboard-backlight/+bug/1184514 might help
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vanger
n00b
n00b


Joined: 04 Jan 2014
Posts: 56

PostPosted: Fri Jan 17, 2014 11:02 pm    Post subject: Reply with quote

Great! It helped. When I'm manually load the module asus-nb-wmi,
Code:
/sys/devices/platform/asus-nb-wmi
directory gets created. Changing the content of
Code:
/sys/devices/platform/asus-nb-wmi/leds/asus::kbd_backlight/brightness
changes the keyboard backlight brightness.

There are a couple of questions still remains.
1. Why is asus-nb-wmi module doesn't loads automatically?
2. When I build there
Code:

CONFIG_ASUS_LAPTOP=m
CONFIG_ASUS_WMI=m
CONFIG_ASUS_NB_WMI=m

as part of a kernel
Code:

CONFIG_ASUS_LAPTOP=y
CONFIG_ASUS_WMI=y
CONFIG_ASUS_NB_WMI=y

Code:
/sys/devices/platform/asus-nb-wmi

is not creating on boot. Why?
3. There is no reaction on pressing functional keys that are responsible to backlight control. I'm using KDE. In System settings --> Global Keyboard Shortcuts --> KDE Daemon there are items concerning a backlight. But it seems that the default KDE action "Keyboard Brightness Up" does something instead wrighting in
Code:
/sys/devices/platform/asus-nb-wmi/leds/asus::kbd_backlight/brightness
. How can I change it?
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nocomprom1se
n00b
n00b


Joined: 17 Dec 2013
Posts: 6

PostPosted: Tue Jan 21, 2014 3:48 am    Post subject: Reply with quote

I also got an newer ASUS laptop.

1) and 2):
use a newer kernel source, it worked for me on 3.11* upwards, currently running 3.12.6 fine.

3):
I am also interested in the solution
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