How to enable ThinkLight laptop lamp on Lenovo Thinkpad X220 in UM 16.04?

I have a Lenovo Thinkpad X220 which does not have a backlight keyboard but a laptop lamp called ThinkLight. Does anyone know how to enable it in Ubuntu MATE 16.04?

HI @maro,

this is old but might help you?:

https://help.ubuntu.com/community/X220

I looked through the Lenovo forum again and found a solution. Initially I didn’t get it to work because I pressed the wrong keys. This works: Fn + PageUp and it works well in Ubuntu MATE 16.04. See also: https://support.lenovo.com/us/en/documents/ht117601:

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