Enable the keyboard backlights on supported Lenovo (e.g. Carbon X1) with command

This is really needed to be fixed!

I think this is a common bug in new thinkpads. If you light keyboard manually fn + space then executed:

echo 0 > /sys/class/leds/tpacpi\:\:thinklight/brightness

keyboard will fade out. Please see the following link if it helps:

http://www.spinics.net/lists/ibm-acpi-devel/msg03090.html

Looks as this has been updated, my X1C with ubuntuMATE 16.04 LTS has

/sys/class/leds/tpacpi\:\:kbd_backlight/brightness

which works as expected ie:

# echo 2 > /sys/class/leds/tpacpi\:\:kbd_backlight/brightness

Brings it to full light :)

This is the bash script I use:

https://gist.github.com/vzaliva/0adba7bc40e2f31a0b5f802af2a63267

Works on IBM ThinkPad X260 with Ubuntu 16.04.