Pen pressure doesn't work on the Surface Pro 4 tablet/computer with Krita 3.1.1. I have installed the necessary drivers related to the pressure adjustments, and re-installed them along with krita.
Hi Dana, I'm really sorry, but this is not a bug in Krita. Krita can work with the n-trig pen of the Surface Pro 4 (our web guru uses one to draw with Krita). And I know that it works with an SP3, because that is what I use myself for sketching. But it is a fact that getting those wintab drivers to work can be _extremely_ fiddly and frustrating. Please check https://docs.krita.org/KritaFAQ#Microsoft_Surface_Pro_and_NTrig to see if anything mentioned there helps. It also doesn't help that Windows 10 updates seem to randomly break the drivers! And unfortunately, we just cannot do something within Krita itself to make this easier, other than writing code to support Windows Ink directly, instead of relying on Microsoft's Wintab drivers. That's something we would like to do, but the documentation is atrocious and nobody has had time to wrestle with it yet.