In the firmware, I have chosen “swap ctrl + fn.” However, after awhile (~1 week?) of suspend/resuming, my “fn” key (actually the “ctrl” key) will stop working. In fact, both seem to act as “ctrl.” What’s worse, is that my fn lock becomes undone, so I can’t use my multimedia keys.
Rebooting is the only way I’ve found to fix it. Any one else?
Yes, I have noticed the same problem.
The only fix I know right now is to reboot.
Other users also have reported it on this forum.
Same thing happens for me, i also commented here:
the frequency seems to be irregular, i cannot find what triggers this behavior, only thing to resolve it seems to be to reboot… since i usually always use Suspend/Resume this is rather inconvenient. I’d be glad for any tips how to track this further, happy to help.
Same problem for me, could not find a way to get them working again except for reboot 
Just wanted to add another voice to this. Seems to be a widespread problem that nobody really understands, and which badly needs fixing at (probably) the firmware level??
There are various threads with suggestions, but I’m not managing to fix it without rebooting, and it’s driving me a bit nuts. I can’t page up and down without my Fn key!