Pen eraser button issues - Xournalpp-test

If your pen has a programmable button, you can map it to eraser or any other tool of your choice.

However, depending on the display server you're actually using, it could happen that:

pressing the button while hovering the screen engages the tool (e.g: eraser) and start erasing
actually touching the screen with the pen tip while doing so, just writes instead of erasing

That depends on your pen's driver settings.

Suppose you've created /usr/share/X11/xorg.conf.d/30-wacom.conf configuration file for X11

If you're using "wacom" driver you probably want to enable TPCButton or TabletPCButton to avoid the described behaviour.

Here's an example:

# N-Trig Duosense Electromagnetic Digitizer
Section "InputClass"
    Identifier "Wacom N-Trig class"
    MatchProduct "HID 1b96:0001|N-Trig Pen|N-Trig DuoSense|1B96:1B05 Pen"
    MatchDevicePath "/dev/input/event*"
    MatchIsTablet "on"
    Driver "wacom"
    Option "Button2" "3"
    Option "TabletPCButton" "on"
    Option "TPCButton" "on"
EndSection