Ubuntu
gnome-settings-daemon package

  1. Bug #1203592
  2. Comment #46

Comment 46 for bug 1203592

Revision history for this message
ThOR27 (thor27-gmail) wrote :

Hi,

Thanks for the tips here, I managed to get keyboard backlight working on Kubuntu 17.04 with my NP900X3J - Samsung Style S50 (the key to change it still doesnt works, and requires a reboot). I have to adapt what Kieran said, what I did was:

# cd /sys/firmware/efi/efivars
# xxd -p KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
0700000004
# lsattr KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
----i-------------- KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
# chattr -i KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
# lsattr KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
------------------- KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
# echo 0700000004 | xxd -p -r > KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
# xxd -p KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
0700000004
# chattr +i KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
# xxd -p KBDBacklitLvl-5af56f53-985c-47d5-920c-f1c531d06852
0700000004
# sudo reboot

And it started to work with ambient light sensor. thanks!