Kieran's solution doesn't work for me on Xubuntu 15.10 (900X3E). I can edit the values with xxd -p /sys/firmware/efi/efivars/KBDBacklitLvl-8be4df61-93ca-11d2-aa0d-00e098032b8c
but they have no effect. Any ideas what else to try?
Kieran's solution doesn't work for me on Xubuntu 15.10 (900X3E). I can edit the values with efi/efivars/ KBDBacklitLvl- 8be4df61- 93ca-11d2- aa0d-00e098032b 8c
xxd -p /sys/firmware/
but they have no effect. Any ideas what else to try?