Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

On my laptop keyboard all Fn + key are labeled in blue. However Fn + X is not labeled and Fn + A - Z (other then X) prints out that letter. Its not printing X so what might it be doing?

share|improve this question
5  
What make / model of laptop? They tend to have thier own setups with regards to keyboard. – DMA57361 Aug 19 '10 at 17:27
up vote 2 down vote accepted

Fn+X is used by a few vendors as a Diagnostic mode. It's meant to be used during boot only to get in and out of diagnostic mode. Otherwise does nothing.

Dell is one vendor I remember specifically using this combination.

share|improve this answer
    
This is a dell. That sounds right. How do i get into diagnostic mode? From a simple google it seems i need to use the dell CD or HD (xp only?) if i havent nuked them to have a XP/7 partition – acidzombie24 Jul 10 '11 at 18:41
    
I don't own a Dell anymore. Been a long time. But assuming Fn+X doesn't get you into system diagnostic mode during boot, it will be used instead solely to get you out of it, when you are forced into diagnostic mode during a failed boot. And you are right, of course. Because this Fn combo is mapped, you don't get a X when used during normal operation. These combos are hardwired into the system. – A Dwarf Jul 10 '11 at 20:49

If Fn[a-z^x] works but Fnx doesn't, it might just be a problem with the keyboard. (Ie: pressing Fn stops the keybord from noticing when x is pressed.) It wouldnt be nearly the stangest bug i've heard of.

share|improve this answer
    
what would be stranger :p thats pretty darn strange to me – acidzombie24 Jul 10 '11 at 18:27
    
Magic, for one. – David X Jul 10 '11 at 20:14

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .