Hello!
I am having a weird problem. With Krita 2 earlier, I was able to paint perfectly well using mouse/trackpad/tablet. However, now with Krita 3 I am not able to draw with my tablet anymore. Mouse and trackpad still work. When I went back to Krita 2 I face the same problem again.
The tablet works fine in GIMP or even in Krita when I use other tools, but the brush. When I hover over the tablet, it shows the brush and when the brush circle width decreases the way it does. However, nothing gets drawn on the canvas. I am running Xubuntu 16.04 and I installed Krita from ppa:kubuntu-ppa/backports. I am using a Huion H610 tablet the buttons of which, including that of the stylus, I haven't configured at all. Button 1 of my stylus has now changed from 'left click' to 'pan tool' and button 2 is still functioning as 'right click'. However, the color wheel that comes up now behaves weird. It keeps rotating when I hover on the triangle. These problems weren't there earlier.
Please help!

I use the same tablet and this sometimes happened to me. While I don't know how to solve the reconfiguration thing, I might be able to help.

Make sure your tablet is plugged in before turning on the computer or Krita. Also, make sure Krita isn't open while doing this. Usually what helped was clicking the pen tablet driver shortcut on the home screen. It would say the tablet is running. I don't if you can access this in Xubuntu, as I use windows. but huion drivers (on my computer) installed the pen tablet driver shortcut and another application with the same thumbnail called Graphic Tablet. If u click on that, it will open up the menus for the tablet settings. Krita might have changed some things in there like it happened to me. Make sure support tablet PC is checked. Play around with the settings, exit, and enter Krita and see if anything changes. I just had to change my settings to a different layout. After this is updated to the current version (The tablet drivers and Krita) it fixed all problem.


Hope this helps!

Also I don't know what ppa:kubuntu-ppa/backports is but I think you should probably download it from the official site.

EDIT: i just realized that u probably did install krita from the site, just that Ubuntu is a bit weird to me. Try downloading from a different source. You might have made a mistake setting it up. It looks very complicated