Basically I'd like to disable the keyboard backlight which at the moment is always on, on my Sony Vaio S15 (2012 series).

I've read a few responses in the past which want me to look for the following file: /sys/devices/platform/sony-laptop/kbd_backlight, however in my case this file just doesn't exist. Please tell me how do I go about it.

Thanks a ton in advance!

EDIT: I found a site listing the solution although I don't really understand what to do (Being a linux newbie :c ) http://oldpapyrus.wordpress.com/2013/05/29/disable-keyboard-backlight-on-vaio-svs13112enb/

EDIT2: Just tried the above solution, though it doesn't seem to work. PLEASE HELP!

BUMP. Please reply guys. It has already been a week now.


The solution in Keyboard backlighting not working on a Vaio VPCSB11FX seems to work for me. To disable:

sudo rmmod -v sony-laptop; sudo modprobe -v sony-laptop kbd_backlight=0

Permanent solution:

echo "options sony-laptop kbd_backlight=0" | sudo tee /etc/modprobe.d/sony-laptop.conf

I was able to make it work in an appropriate way using:

sudo rmmod -v sony-laptop; sudo modprobe -v sony-laptop kbd_backlight=1 kbd_backlight_timeout=1

Or permanently:

echo "options sony-laptop kbd_backlight=1 kbd_backlight_timeout=1" | sudo tee /etc/modprobe.d/sony-laptop.conf
  • I wanted to "keep the sony vaio keyboard backligh always on/enabled" modinfo sony-laptop also kbd_backlight=2 should keep it on but seems to not work, so I am using your answer with timeout =3 that seems to keep for a long time (doesnt mean 3s) and will suffice thx! – Aquarius Power Jun 7 '17 at 5:29

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