Kubuntu: disable mouse acceleration and adjust mouse speed

Question

I'm integrating the "Payments REST API" to setup billing agreements on my site and I'm having issues where I probably should not.

Using a sandbox merchant account, I've successfully authorized a payment through the REST API. The payment was accepted and "Notification of payment received" shows up in the test account's notifications.

Then, I created a new sandbox merchant account and in the "Profile" tab, I upgraded the account type from "BUSINESS" to "BUSINESS-Pro". I then created a new REST API application with this test account. Yet, when I try creating a billing plan, activate that plan and then create a billing agreement with that plan, I'm thrown a "DPRP_DISABLED" exception. I've learned that this "Direct Payment Recurring Payments" exception is for when the account type is not set to "BUSINESS-Pro", but as I previously stated, mine is.

I've tried creating multiple other accounts with the "BUSINESS-Pro" type. I even tried setting one's country to the UK (instead of US), but no luck.

Should this be happening?

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.

Comments

[user26687]

Same kind of: askubuntu.com/questions/172972/…

[igogo]

It does acceleration of small movements, instead of acceleration of fast movements what it normally does. Set the acceleration to 0.1, move mouse slightly, and the pointer leaps to an edge of the screen. I don't know why KDE devs thought this may be useful.

[Simon Thum]

This answer (point 1 at least) is wrong, unfortunately. See askubuntu.com/questions/172972/…