While trying to push the buttons for ajusting light on my keyboard, which previously worked on my old HP ProBook 450 G0 running Manjaro KDE Plasma edition, nothing happens. There is also something weird with the corresponding sound buttons, which work, but the cool thing on the screen that shows the volume, which I also really liked, is gone.
I don’t know if this is related, but I think it started to happen around the same time as when I was trying to get rid of an annoying beep sound, see my other post (unfortunately I’m not allowed to post links). The code I wrote in the terminal looked like this:
sudo su pacman -S dialog dialog --infobox "Getting rid of that retarded error beep sound..." 10 50 rmmod pcspkr echo "blacklist pcspkr" > /etc/modprobe.d/nobeep.conf ;
Hope someone can help me getting back the possibility of changing screen light, whilst also not having that annoying beep sound.