HP x360 11-071sg Celeron - internal keyboard doesn't work

I’ve installed core essential 15.3 on my old convertible HP x360 11-071sg (Celeron).
Everything works good, but I have one issue. The internal keyboard doesn’t work. The touchpad, the on-screen keyboard an an extern usb-keyboard are working fine.
I’ve done many issues found in the internet, also in relation to ubuntu, but nothing solves the problem.

Hi hansibuh, and welcome to the forum. Having looked at Ubuntu’s certified HP Notebooks for 18.04, that could be one of the issues:

And remembering, unfortunately, generally hardware manufactured by brands such as HP were constructed to run that other OS. :wink: