Tablet setup in MyPaint
MyPaint is a fast and easy open-source graphics application for digital painters. It lets you focus on the art instead of the program. You work on your canvas with minimum distractions, bringing up the interface only when you need it.
In this tutorial you can learn how to setup your tablet, which uses the evdev driver, working in this software.
MyPaint 1.0
This version has been released on the 22nd of November 2011. This is the default version in most Linux distributions.
Tablet setup
In order to set up your device choose MyPaint>Help>Debug>GTK input device dialog from the menu. On the Input dialogue select your device and set the Mode to Screen. The following image illustrates the settings.
The above method works only with MyPaint 1.0 or above. Earlier versions of this program do not have the GTK input dialog menu item, so you cannot setup your non-wacom tablet.
Pressure curve
In order to change the pressure curve used by your devices choose MyPaint>Edit>Preferences from the menu. On the Preferences dialogue change the curve as you wish.
Device testing
After you have set up your device, you can test if it is works or not. In order to do that select MyPaint>Help>Debug>Test input devices from the menu. Start to draw something on the canvas and you can see on the Input Device Test dialogue how the pressure and other data of the pen changes.
MyPaint 0.9
This version has been released on the 2nd of November 2010. This was the default version of MyPaint in earlier Linux distributions, like Ubuntu 11.10. This version of the program do not have the GTK input dialogue menu item, so you cannot setup your (non wacom) tablet.
More information
You can find more information about MyPaint on the official website of the software.