How can I lock the original keyboard of a laptop?

[mman]

I have a keyboard External How can I lock the built-in keyboard in the laptop with Manjaro

[dmt]

You want to temporarily disable your internal keyboard?

Use xinput to get the name or id of the device, you should see something like this:

$ xinput
...
AT Translated Set 2 keyboard    id=14   [slave keyboard (3)]
...

Either will work but the id can change and the name doesn’t, so if you put it in a script then use the name.

To disable it:

xinput disable 14

To re-enable:

xinput enable "AT Translated Set 2 keyboard"

This will only last until you logout/reboot.

---

If you want it to be permanent, you can blacklist it.

echo 'blacklist atkbd' | sudo tee /etc/modprobe.d/kill-atkbd.conf

sudo mkinitcpio -P

After a reboot your internal keyboard will be disabled.