How do I disable the "Fn" keys on a laptop?

Question

I was wondering if anyone could tell me how to disable the fn key on my laptop?

I came here because my laptop has a hardware issue and starts sending F12 keypresses randomly. Seems none of the answers here are helpful. — SOFe, Jun 10 '22 at 15:40

score 27 · Answer 1 · edited Sep 24 '18 at 09:41

27

Press Fn+Esc will toggle between enabling/disabling Fn-key functions.

You can also press Ctrl+Shift+T.

edited Sep 24 '18 at 09:41

abu_bua

10,783

answered Oct 09 '14 at 07:16

Rocky Pocky

287
3
2

1

I'm not sure that this answer will work on all systems: it does not work on my Dell. – Charles Green Oct 09 '14 at 13:50
2

This worked for me on Lenovo Thinkpad e450 – Shobhit Sharma Oct 29 '15 at 06:31
works on dell xps – m00sey Feb 19 '17 at 20:32
2

I had to use Fn+Super+Esc for this to work – Dave Mackintosh Mar 09 '17 at 16:03
2

work on my dell inspiron 7000. surprisingly simple answer, didn't expect that. – Johnny Willer Sep 21 '18 at 01:20
Neither works on acer – MERose Sep 23 '20 at 13:09
you're my hero! thx! – Adriano Tadao Nov 19 '21 at 10:07

score 5 · Answer 2 · answered Jan 28 '11 at 18:29

5

Check your laptop's BIOS. Most of the BIOS handles how to change (or remove) functionality of those special keys. I have just done this in order to change the order of [Fn] and left [Ctrl] keys but I remember there is an option to cancel the [Fn] key.

answered Jan 28 '11 at 18:29

Geppettvs D'Constanzo

19,552

score 3 · Answer 3 · edited Apr 13 '17 at 12:25

3

I recently had a similar problem with CapsLock and fixed it with xmodmap

You would only have to find out the code for fn, perhaps you will find it in the man page of xmodmap.

Update: Refering to thinkwiki.com the keycode for fn should be 227 and the keysym F35

So the xmodmap syntax to disable fn could be remove Lock = F35
I have not tested it.

edited Apr 13 '17 at 12:25

Community

1

answered Jan 28 '11 at 08:29

Pit

1,214

score 0 · Answer 4 · answered Mar 19 '24 at 06:35

0

On my HP laptop, in Ubuntu 20.04. I solved this issue like this,

At first lock your PC.
Press ctrl+shift+t

answered Mar 19 '24 at 06:35

dipu bala

1

How do I disable the "Fn" keys on a laptop?

4 Answers4