# EDIT: Pressure input is capped only when using "rubber" key on stylus

**URL:** <https://krita-artists.org/t/edit-pressure-input-is-capped-only-when-using-rubber-key-on-stylus/185000>\
**Category:** Input Device Support\
**Tags:** linux\
**Created:** [June 7, 2026, 8:45pm UTC](https://krita-artists.org/t/edit-pressure-input-is-capped-only-when-using-rubber-key-on-stylus/185000 "2026-06-07T20:45:38Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![wakocima](https://krita-artists.org/user_avatar/krita-artists.org/wakocima/32/217849_2.png) [@wakocima](https://krita-artists.org/u/wakocima)\
**Post date:** [June 10, 2026, 7:07am UTC](https://krita-artists.org/t/edit-pressure-input-is-capped-only-when-using-rubber-key-on-stylus/185000/10 "2026-06-10T07:07:27Z")

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Tiniest of updates; I have to assume it’s something to do with wayland reading MPP input. No clue how to change that one, or how to even check for a possible error, so it’s time to dig into wayland’s docs 🫠 I’m just baffled as to what could have changed when things were perfectly fine before. Oh well, it is what it is, time to spend time learning. 🥴

EDIT:

Still no clue on the fix, but libinput DOES register the lower button as “eraser”, which automatically hampers the pressure:

 ![image](https://krita-artists.org/uploads/default/original/3X/3/5/359fa6d5aa33787668d4f08d57460cfd0e7d70d1.png)

It would seem that eraser issues are not uncommon, though, as David Revoy did have somewhat-of-a-similar issue:

> **[How a kernel update broke my stylus... Need help!](https://www.davidrevoy.com/article995/how-a-kernel-update-broke-my-stylus-need-help)**

This is repeated in a reddit post I managed to dig up:

https://embed.reddit.com/r/gnome/comments/1942kx3/how_to_change_stylus_button_mapping_for/?embed=true&ref_source=embed&ref=share

This tells me that it must come down to kernel??

I’m considering reporting this to wayland perhaps? Or libinput.

My current sole workaround for this:

> **[GitHub - sezanzeb/input-remapper: 🎮 ⌨ An easy to use tool to change the behaviour of...](https://github.com/sezanzeb/input-remapper)**
>
> 🎮 ⌨ An easy to use tool to change the behaviour of your input devices.

Mapping BUTTON TOOL RUBBER to KEY\_E, and binding E in Krita to “toggle eraser preset”. Absolutely crusty and does not solve the underlying issue, but at least I can work around this for now. Whew.

If anyone has come across anything similar, please please please, let me know in this thread so I know everything I should include in my reports, as I’m a bit out of ideas outside of just including the libinput log.

EDIT 2: The pressure cap also appears in the KDE Plasma tablet tester. Again, I have to assume this is wayland/kernel acting up and nothing else.

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