[kde] [Bug 480616] New: OpenTabletDriver: tablet cursor only moves in the right half of the selected display area.

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=480616

            Bug ID: 480616
           Summary: OpenTabletDriver: tablet cursor only moves in the
                    right half of the selected display area.
    Classification: I don't know
           Product: kde
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: kazzu.kalmer at protonmail.com
  Target Milestone: ---

SUMMARY
First time reporting a bug. Sorry if I screw up.

This may be a problem with OpenTabletDriver, but this doesn't happen in
hyprland, at least not, when the tablet isn't added in the config file's input
settings and only OpenTabletDriver is used.

I have a problem with drawing tablets on KDE. Me and my friend tested this on
multiple computers and a virtual machine, all of which were running Arch Linux.

The tests were done with the following environment.
- This was tested on an up-to-date Arch Linux install.
- This problem happens with both KDE Plasma 5 and KDE Plasma 6 RC 1.
- This only happens with 2 monitors. (Probably happens with 3+ monitors, but I
haven't tested that.)
- This only happens with the wayland session.

When I have a tablet using OpenTabletDriver connected and the tablet is in
artist mode, the tablet's cursor only moves in the right half of the selected
display area. (Selected in OpenTabletDriver)
For example, when one monitor is selected, the cursor only moves in the right
half of the monitor.
When both 1080p monitors are selected, the cursor only moves on the right
monitor.

If i'd have to guess, this may have to do with the tablet being added as a
drawing tablet in the input settings, which doesn't happen in the x11 session.
When it's added as a drawing tablet, KDE assigns the tablet to a display.
The input settings and OpenTabletDriver may be fighting over the allotted
display area. Not sure though.

STEPS TO REPRODUCE
1. Open KDE Plasma wayland session with 2 monitors connected.
2. Open OpenTabletDriver.
3. Set tablet to artist mode and apply.

OBSERVED RESULT
Tablet's cursor moves only on the right half of the selected display area.

EXPECTED RESULT
Tablet's cursor moving on the whole selected area.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.114.0
Qt Version: 5.15.12

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