Comment # 11 on bug 1078487 from Karl Cheng

Created attachment 760119 [details]
hwinfo output

(In reply to Takashi Iwai from comment #10)
> Erm, please stop adding "me too" entries if you have a different laptop.
> Instead, please open another bug report per laptop model.  If we figure out
> that it were a same culprit, we can close as dup.
> 
> Let's start from the original report.  This looks like an ASUS laptop, but
> need more clarification.  Karl, please give hwinfo output.
> 
> And if you still have an old kernel where the Fn key worked, please boot
> with it again and confirm that the Fn key still works.  Then we can narrow
> down the kernel regression range.

My apologies, it appears that this was indeed a KDE-specific issue rather than
a kernel bug.

As mentioned in comment 9, kde#389991 provides instructions to manually fix
this, which resolved the issue in my case.

However, I'm not sure whether this requires manual intervention or if it can be
handled by a package update.

Regardless, I have attached hwinfo output for my laptop, which is indeed an
ASUS UX331UA.