Hi, I'm new to Krita, and got my first drawing tablet recently. I was excited to try it out, but I encountered a problem that rendered the program unusable. After the first few brush strokes, which draw normally, straight lines start to shoot off of the brush stroke in the direction I am drawing in. I use a Huion 680s tablet, and my operating system is Mac High Sierra 10.13.6.
Picture: https://www.dropbox.com/s/xxaryjdc2yzp3 ... 3.png?dl=0
I am fairly certain that the problem does not lie with the drawing tablet, because it worked fine in Medibang Paint, and because I uninstalled and reinstalled the tablet driver to no avail. I also tried deleting Krita's configuration files. However, I did try using the trackpad on my computer, and the straight lines did not appear. If I draw with my drawing tablet, then turn the pen off and try to draw with the trackpad, nothing will appear on the screen. The same thing happens when I try to use a mouse. Any help anyone can offer to resolve this problem would be very much appreciated.

There is no solution. Huion on MacOS is broken. Not just with Krita; we see the same problems with other applications like Corel Painter.

I have exactly the same issue! I use MacOs Mojave 10.14.4 with Huion GT-220 version 1, Driver version 11.1.8

Do we have any news about this issue?

This also happened with me a few times, but i'm on Manjaro linux and using a wacom tablet. It happens sporadically but can be very annoying when drawing a line for a few seconds or painting.

This seems like a copout answer. Huion is not broken with Mac OS. It works great on every other program I've got, photoshop accepts it just fine. There have been versions of Krita where it has worked. And this is an issue that shows up with other tablet brands with just Krita as well.
If Huion was broken with Mac, even the tablet pen sensitivity tester would show the same problem and it doesn't. I'm amazed it's been over a year and this problem still hasn't been fixed. First it was lines continuing after you lifted the pen in the 3.0.0 versions, and now it's this in 4.0.0. It would be the same problem every time if it was Mac OS and Huion having the issue but it's not.

feharrington wrote:This seems like a copout answer. Huion is not broken with Mac OS. It works great on every other program I've got, photoshop accepts it just fine. There have been versions of Krita where it has worked. And this is an issue that shows up with other tablet brands with just Krita as well.
If Huion was broken with Mac, even the tablet pen sensitivity tester would show the same problem and it doesn't. I'm amazed it's been over a year and this problem still hasn't been fixed. First it was lines continuing after you lifted the pen in the 3.0.0 versions, and now it's this in 4.0.0. It would be the same problem every time if it was Mac OS and Huion having the issue but it's not.

No, the Huion tablet I have to test with does not work fine with every other application on macOS. It does not work at all, for instance, with Corel Painter. It will likely work with Photoshop because, of course, Huion tests with Photoshop.

Check out Krita Next version (or wait a bit, today should be Krita 4.2.0 alpha released) and see if it works there. Because we updated the library Krita uses and the updated version broke a lot of stuff, practically the entire tablet code was rewritten...

Also regarding "it works everywhere except for Krita" - with tablet drivers the situation is like with a person who speaks broken English - some people will understand them, some people will not. It's not the people that don't understand fault that they don't understand if the language their interlocutor uses is broken. The thing is, tablet driver developers mostly check their program if it works with Photoshop and similar applications (Equivalent of a person checking brokenness of their English on one or two people). If it works, then they don't have to care if any other person understands them... And the problem with broken tablet drivers is just like that: there is a common language called API, and they don't follow API's rules, so some programs may not understand them.

Krita 4.2.0 won't even open on MacOS. It just crashes.

Krita 4.2.2, the same problem is still occurring unfortunately.