How to lock and unlock keyboard in Ubuntu ?

Question

I want to lock my desktop keyboard is there any command or shortcut to do this ?

You mean so it doesn't input anything? sudo apt-get install xtrlock might be what you need. http://ubuntuforums.org/showthread.php?t=993800 — TheWanderer, Aug 23 '15 at 03:40
This is stupid program, it locks my keyboard,cursor and I cant unlock those. — Shohanur Rahaman, Aug 23 '15 at 04:04
You just need to enter your password (type it) and it will unlock. — TheWanderer, Aug 23 '15 at 04:10
where I type my password ? I didn't found any password typing field when I locked keyboard. — Shohanur Rahaman, Aug 23 '15 at 04:13
it works but It lock both keyboard and mouse. Is there any way to lock only keyboard not cursor so that I can scroll and click ? — Shohanur Rahaman, Aug 23 '15 at 04:23
I'm not sure. You can look in the config files (probably somewhere under ~/.config). — TheWanderer, Aug 23 '15 at 04:28
@Zacharee1 If it solved the problem and you can explain how, then yes. — Kaz Wolfe, Aug 23 '15 at 05:47
@Zacharee1 please type it below as an answer and I will give you a +1 — Parto, Aug 23 '15 at 06:34
possible duplicate of How to disable and enable keyboard in ubuntu? Read it if you want to disable only keyboard. — Ron, Aug 23 '15 at 10:35
@Ron the problem with that is the keyboard is completely disabled for a certain amount of time. It's not a switch — TheWanderer, Aug 23 '15 at 13:54

score 16 · Accepted Answer · answered Aug 23 '15 at 13:55

16

xtrlock might be what you're looking for. It disables the keyboard until you type your password. It does also disable the mouse, but you might be able to change that in the config. Install it by running sudo apt-get install xtrlock.

answered Aug 23 '15 at 13:55

TheWanderer

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Just showing up 8 years later to say that xtrlock works like a charm on my Lubuntu machine. The man page does say that it is built for X11 but might not work very well on an environment that uses Wayland, so mind that. – Pablo Sánchez Jan 25 '24 at 03:15

How to lock and unlock keyboard in Ubuntu ?

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