3

How can I disable a notebooks built-in keyboard - before the login screen.

I have a non functioning built-in keyboard on my notebook. In it's current state it types characters randomly. I am using an external keyboard, and would like to avoid problems logging in

I searched and found some solutions, like scripts - but I need one that works before the login screen.

Mateo
  • 8,152
João Mosmann
  • 109

3 Answers3

0

Copied from comments above.

Add the i8042.nokbd kernel parameter.

If you use GRUB, to add a kernel parameter edit /etc/default/grub and append the kernel parameter to the GRUB_CMDLINE_LINUX_DEFAULT variable.
For example:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nokbd"

Make sure the kernel parameter is inside the quotes.
Then run

sudo update-grub
zx485
  • 2,865
Bhikkhu Subhuti
  • 1,429
0

Well, I could suggest a hardware-based solution. You could look up the laptop's manual, open it (screwdrivers, etc.), find the connector that links the in-built keyboard and the laptop's motherboard (on my HP dv3 this was relatively easy), and unplug it. Then you won't have any more inadvertent key presses. While you're at it, you could take out the keyboard and see if it's possible to clean it up to make it behave.

As for a software-based solution, you can put xinput set-int-prop 14 "Device Enabled" 8 0 (as per your current workaround) in /etc/rc.local. You need to insert your command in this file before exit 0. For details, see Is it possible to run a command before log in screen?.

Community
  • 1
landroni
  • 6,011
-2

It sounds like you have issues whit sticky keys, that prevents you from logging in. (if that's correct then your only option are to remove the keyboard, from your notebook.

Google: How to remove keyboard "REPLACE THIS WHIT YOUR COUPUTER MODELNAME". And follow some guide its fairly simple.In most cases you don't even need to remove screws. go to http://www.aliexpress.com/ and order your self an new keyboard for that computer, and while you wait for it connect a external USB keyboard to the computer, and your able to log in.

You should clarify if you'r able to log into the computer, remote access it whit SSH or VNC. (then it would be easier for others to explain to you what to do.

if your able to log in you can try to open an new terminal type CTRL+ALT+T and type in

sudo nano /boot/grub/grub.cfg

Add 

i8042.nokbd

in the the end of the file, and save the file

CTRL+X (type Y) and enter

and type 

sudo update-grub

In the terminal

BD Bear
  • 478