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! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1203592 Title: Keyboard backlight does not work in Samsung Series 9 NP900X4C To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1203592/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
