Reset pen tablet calibration?

[Hayden]

I recently got a Huion Kamvas 13 (Gen 3), and while messing around with the configuration in Plasma settings, I seem to have managed to calibrate it against a bad calibration, and now I can’t get any input out of it.

Surface level searching doesn’t really give me any results for how to reset the calibration, and from what I can tell (and found online) starting a new calibration doesn’t seem to use a default calibration, but instead what it is already set to.

Is there a way to manually reset the tablet calibration?

[anon93652015]

You’ll need to dredge through your ~/.config and ~/.local/share folders for KDE-related files and folders that may have this setting. You can maybe ask a chatbot for assistance with which config file/folder in KDE handles tablet calibration.

Either way, make sure to duplicate/rename the file/folder you are modifying/deleting prior to modifying/deleting it, and giving it a different name, just in case it’s the wrong one.

I’ve never seen anyone with this issue, so you may be sailing in undiscovered waters.
~ The S.S Endeavour.

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Just thought of another option. Uninstall the tablet’s driver, reboot, reinstall.

[Hayden]

I’m digging through ~/.config but not finding anything relating to a tablet configuration yet
And this is also just out of the box without installing the driver. I did install the tablet driver, but it hasn’t seemed to help any. Additionally, I just don’t seem to have ~/local/share so that’s fun.

I’ll continue to look around though.

[anon93652015]

Que? Cuando?

How?

Try this to be sure:

ls .local && ls .local/share

[Hayden]

I had noticed it was ~/.local/share, not ~/local/share

Though digging through both I’m still not finding anything relating to a tablet configuration

[anon93652015]

Oh, my mistake. Edited it.

[xircon]

Could it be in ~/.config/kcminputrc? I don’t have a tablet, so just a guess.

[Hayden]

CalibrationMatrix=nan,nan,nan,0,nan,nan,nan,0,nan,nan,nan,0,nan,nan,nan,1
LeftHanded=false
MapToWorkspace=false
Orientation=0
OutputArea=0,0,1,1
OutputName=HDMI-A-2

Oh would you look at that, that’s a lot of bad numbers, yeah that’d explain the behavior I’m seeing

[xircon]

Lots of nans, no granddads

[Hayden]

Okay, removing the CalibrationMatrix entry seems to have solved that, however I now have another problem of the Huion drivers and the Plasma tablet support fighting over each other, and I’m not sure how to handle it, as I would like the input ability that the drivers provide (the buttons/dials on the tablet and configuration they offer), but I’m not sure if I can solve the two fighting over each other.