Kubuntu: disable mouse acceleration and adjust mouse speed

Solution 1:

How to adjust mouse speed in KDE
  • without enabling mouse acceleration
  • and only using the settings dialog (no console, no config files)

This is a colloquial summary of exhuma's answer, don't forget to upvote it.

In KDE, mouse acceleration is not logarithmic. That is, it has two constant mouse speeds: non-accelerated and accelerated. It switches from one to another when you jerk the mouse quickly enough.

The first speed is non-configurable (at least, from GUI). The second speed is configurable.

The solution is:

  1. Set "Pointer threshold" to 0. As a result, the second speed will be applied at all times.
  2. Adjust "Pointer acceleration" to make that speed higher or lower.

You will end up with a constant, non-dynamic cursor speed adjusted to your liking.

Solution 2:

In this dialog, to disable the acceleration, you shouldn't set it to 0, rather set it to 1.