I have followed this link https://ubuntu-mate.community/t/cm-storm-keyboard-and-mouse-solved/9816 .

I used this command sudo xmodmap -e 'add mod3 = Scroll_Lock'

but it's showing me following msg xmodmap: unable to open display 'desktop:0'.

when I use xset led 3. it's not turning on backlit.

Can anyone tell me what's going on ?


I was breaking my head trying to solve this one, this is what I did:

sudo su
echo 3 > /sys/class/leds/input5::scrolllock/brightness

I created an script that toggles the on and off as a sudoer:



if [ ! -e $TOGGLE ]; then
    touch $TOGGLE
    echo 3 > /sys/class/leds/input5::scrolllock/brightness
    rm $TOGGLE
    echo 0 > /sys/class/leds/input5::scrolllock/brightness

Still no luck trying to bind it to the scroll lock key...


I created a script "keyboardLedOn.sh" with:

#! /bin/sh
xset -led 2 led on
gsettings set org.gnome.desktop.a11y.keyboard mousekeys-enable true
gsettings set org.gnome.desktop.a11y.keyboard mousekeys-enable false 

Then in the end of my .profile file (~/.profile) put:


I hope someone can help to improve, I know it's not a good answer, but it works

  • it's not working for me – random_user Jul 28 '18 at 7:41

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