This page is about drawing tablets, what they are, how they work, and where things can go wrong.
What are tablets?¶
Drawing with a mouse can be unintuitive and difficult compared to pencil and paper. Even worse, extended mouse use can result in carpal tunnel syndrome. That’s why most people who draw digitally use a specialized piece of hardware known as a drawing tablet.
A drawing tablet is a piece of hardware that you can plug into your machine, much like a keyboard or mouse. It usually looks like a plastic pad, with a stylus. Another popular format is a computer monitors with stylus used to draw directly on the screen. These are better to use than a mouse because it’s more natural to draw with a stylus and generally better for your wrists.
With a properly installed tablet stylus, Krita can use information like pressure sensitivity, allowing you to make strokes that get bigger or smaller depending on the pressure you put on them, to create richer and more interesting strokes.
Sometimes, people confuse finger-touch styluses with a proper tablet. You can tell the difference because a drawing tablet stylus usually has a pointy nib, while a stylus made for finger-touch has a big rubbery round nib, like a finger. These tablets may not give good results and a pressure-sensitive tablet is recommended.
Drivers and Pressure Sensitivity¶
So you have bought a tablet, a real drawing tablet. And you wanna get it to work with Krita! So you plug in the USB cable, start up Krita and… It doesn’t work! Or well, you can make strokes, but that pressure sensitivity you heard so much about doesn’t seem to work.
This is because you need to install a program called a ‘driver’. Usually you can find the driver on a CD that was delivered alongside your tablet, or on the website of the manufacturer. Go install it, and while you wait, we’ll go into the details of what it is!
Running on your computer is a basic system doing all the tricky bits of running a computer for you. This is the operating system, or OS. Most people use an operating system called Windows, but people on an Apple device have an operating system called MacOS, and some people, including many of the developers use a system called Linux.
The base principle of all of these systems is the same though. You would like to run programs like Krita, called software, on your computer, and you want Krita to be able to communicate with the hardware, like your drawing tablet. But to have those two communicate can be really difficult - so the operating system, works as a glue between the two.
Whenever you start Krita, Krita will first make connections with the operating system, so it can ask it for a lot of these things: It would like to display things, and use the memory, and so on. Most importantly, it would like to get information from the tablet!
But it can’t! Turns out your operating system doesn’t know much about tablets. That’s what drivers are for. Installing a driver gives the operating system enough information so the OS can provide Krita with the right information about the tablet. The hardware manufacturer’s job is to write a proper driver for each operating system.
Because drivers modify the operating system a little, you will always need to restart your computer when installing or deinstalling a driver, so don’t forget to do this! Conversely, because Krita isn’t a driver, you don’t need to even deinstall it to reset the configuration, just rename or delete the configuration file.
Where it can go wrong¶
Krita automatically connects to your tablet if the drivers are installed. When things go wrong, usually the problem isn’t with Krita.
Surface pro tablets need two drivers¶
Certain tablets using n-trig, like the Surface Pro, have two types of drivers. One is native, n-trig and the other one is called wintab. Since 3.3, Krita can use windows ink style drivers, just go toand toggle the “Windows 8+ pointer input” there. You don’t need to install the wintab drivers anymore for n-trig based pens.
Windows 10 updates¶
Sometimes a Windows 10 update can mess up tablet drivers. In that case, reinstalling the drivers should work.
Tablet drivers need to be made by the manufacturer. Sometimes, with really cheap tablets, the hardware is fine, but the driver is badly written, which means that the driver just doesn’t work well. We cannot do anything about this, sadly. You will have to send a complaint to the manufacturer for this, or buy a better tablet with better quality drivers.
On Windows, you can only have a single wintab-style driver installed at a time. So be sure to deinstall the previous driver before installing the one that comes with the tablet you want to use. Other operating systems are a bit better about this, but even Linux, where the drivers are often preinstalled, cant run two tablets with different drivers at once.
Sometimes, there’s software that tries to make a security layer between Krita and the operating system. Sandboxie is an example of this. However, Krita cannot always connect to certain parts of the operating system while sandboxed, so it will often break in programs like sandboxie. Similarly, certain mouse software, like Razer utilities can also affect whether Krita can talk to the operating system, converting tablet information to mouse information. This type of software should be configured to leave Krita alone, or be deinstalled.
The following software has been reported to interfere with tablet events to Krita:
- Razer mouse utilities
- AMD catalyst “game mode” (this broke the right click for someone)
Flicks (Wait circle showing up and then calling the popup palette)¶
If you have a situation where trying to draw keeps bringing up the pop-up palette on windows, then the problem might be flicks. These are a type of gesture, a bit of windows functionality that allows you to make a motion to serve as a keyboard shortcut. Windows automatically turns these on when you install tablet drivers, because the people who made this part of windows forgot that people also draw with computers. So you will need to turn it off in the windows flicks configuration.
Wacom Double Click Sensitivity (Straight starts of lines)¶
If you experience an issue where the start of the stroke is straight, and have a wacom tablet, it could be caused by the Wacom driver double-click detection.
To fix this, go to the Wacom settings utility and lower the double click sensitivity.