Pointer settings for large displays

#A larger pointer

Open the Pointers module and choose a larger value in the Size field, if your theme offers one.

To set it by hand instead, open ~/.config/kcminputrc in a text editor. In the [Mouse] section, add this line and save the file:

cursorSize=32

The pointer is larger the next time you log in.

#Better acceleration

The Mouse module has the pointer speed and acceleration settings, including Legacy X11 acceleration and Acceleration threshold. You can set a really fast acceleration there, for example 20x, and a threshold of 2 pixels.

That acceleration should be fine at medium distances but too fast over longer ones. Here's the trick to get better acceleration:

Press Alt+F2, enter konsole and press Return. In the console window, find the name of your mouse with:

xinput list

Then, in the Autostart module, add a login script containing this line, replacing Logitech USB-PS/2 Optical Mouse with the name of your mouse:

xinput --set-prop "Logitech USB-PS/2 Optical Mouse" "Device Accel Constant Deceleration" 1.2

Your mouse acceleration is better the next time you log in.