I'm using Fedora for years on my ASUS X550LD laptop without any major problems. But sind a few months (I not able to say since when exactly), I have a very annoying issue that I can describe as follow: When I press on keys (especially from first row bellow F-Key, i.e. digits and backspace) nothing happens. But if I insist an continue to press repeatedly the key, it finally works. After it worked once it (and other problematic keys) continue to work normally for a certain period. But after a while, I observe the same issue again.
With external keyboard I never observed a similar issue.