If you do not have pen pressure by default in GIMP, please follow the instructions listed below to set up pen pressure.
Open GIMP > Edit > Input Devices [1] these three selections need to be set for [2] Screen Once you have done that, you will need to close and then restart GIMP | |
[3] You will need to set Dynamics to Pressure Size You may need to stop and then start GIMP once more | |
The image to the right shows that my Xencelabs Pen now has pressure sensitivity. |