Some keyboard keys are not working with Ubuntu 20.04 on my Lenovo X1 Carbon

cn flag

I found that some keys (e.g. g, h, Up arrow, Esc) are not working fine. Sometimes they stop working and I have to go to another app and press mouse keys to get them running again.

I have tested the hardware with the showkey command and keys were sending the code properly. It means hardware is not an issue.

Also I have tried to use the below command to configure the suitable keyboard, but was not able to find one:

sudo dpkg-reconfigure keyboard-configuration

Also, my external keyboard is working fine.

I have changed my OS to 20.04. But it is still not working.

How to solve this? Help is appreciated. Thanks!

cn flag
I also noticed that it was working fine for some hour after installing the Ubuntu 20.04. And suddenly these keys stopped working.
Someone avatar
my flag
How did you changed your OS to 20.04? Reinstalling or Some manual file changes?

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