XPS keyboard

I am finding myself mistyping "sound" as "soudn".  Turns out that my internal keyboard doesn't register "N" or "M" if "OU" or "IU" are down, external keyboards are fine, they don't have this issue.

Further investigation on three independent Dell XPS Plus 9320, with Windows, Ubuntu 22.04 (developer edition), Ubuntu 24.04 LTS (updated from developer edition), and Ubuntu 25.10 (updated from developer edition) shows that they all have exactly the same issue.

The Dell XPS Plus 9320 internal keyboard does not register some combinations of key triplets. E.g. N does not register when O and U are down, but B does. Z does not register when Q and W are down, but C does. I am apparently typing "sound" too fast for this device, D registers while O and U are still down and N only gets there once one of them snaps back.  I am not an exceptionally fast typer.  It looks as if the keyboard is split into columns of keys where each column accepts only two keys down at a time, leading to these race conditions.  This sounds like a hardware problem for which we all need a fix ASAP.

I originally posted this here when I did not yet have a chance to test this on another Laptop, and somebody moved this into the Linux category where it doesn't belong and has no chance of being resolved.  I cannot change this decision, so I am creating a new post.  (moved OP https://www.dell.com/community/en/conversations/linux-general/n-key-does-not-register-when-ou-or-iu-are-down/6937151c04bdbe7915d134ef)