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I'm very new to Linux and have absolutely no programming background, so apologies if there's an obvious answer here that I missed.

My computer is an Inspiron 7391 2-in-1. I'm running Ubuntu 20.04.2 LTS.

My Dell active pen isn't registering pressure differences. I tried it in both Krita and MyPaint. I searched and saw that this has been asked before, but the solution I found hasn't worked.

I tried to run the python driver found on this post (Microsoft Pen Protocol support) and it didn't work. I have Python 3.8.5 installed.

I ran this line in my terminal: python3 pen_pressure.py

And this is the return I got:

Traceback (most recent call last):
  File "pen_pressure.py", line 3, in <module>
    import libevdev
ModuleNotFoundError: No module named 'libevdev'

Any help would be greatly appreciated.

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You have to install related python3 evdev packages by

sudo apt-add-repository universe
sudo apt-get update
sudo apt-get install python3-libevdev python3-evdev
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  • That fixed that particular problem! Thanks for the help. It's still throwing errors, but at least they're different errors...
    – scientistcarter
    Jun 18, 2021 at 21:28

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