https://bugs.kde.org/show_bug.cgi?id=500911
Bug ID: 500911
Summary: Interaction between pen calibration via UDEV and
kcm_tablet at the same time
Classification: Applications
Product: systemsettings
Version: 6.3.2
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: kcm_tablet
Assignee: plasma-b...@kde.org
Reporter: notafu...@posteo.com
CC: aleix...@kde.org, j...@redstrate.com
Target Milestone: ---
SUMMARY
In reference to the following thread in the code base discussion, as requested
by Joshua Goins:
https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/1833
STEPS TO REPRODUCE
1. Create an UDEV rule to manually adjust your calibration, the process is
described in paragraph 1.4 of this wiki:
https://wiki.archlinux.org/title/Calibrating_Touchscreen (In my case: 0.25% to
the left)
2. Reload UDEV rules for the calibration to apply.
3. Also Calibrate the the pen with the tool in kcm_tablet.
4. Save the result with the Apply button.
OBSERVED RESULT
- The Cursor is being offset way more than it should (about 1,5cm)
EXPECTED RESULT
- They shouldn't affect eachother, I guess?
- Current workaround is to just comment out the udev rule.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.3.2
KDE Frameworks Version: 6.11.0
Qt Version: 6.8.2
Kernel Version: 6.13.5-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 12 × AMD Ryzen 5 5600X 6-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 4060 Ti
Tablet: XP-Pen Artist 24 Pro
ADDITIONAL INFORMATION
- I also have an HP Elite X2 G4 where the UDEV method didn't work at all but
the kcm_tablet method had the expected calibration effect. There, the
interaction between the two methods didn't happen at all. I couldn't make
complete sense of how the PIDs for this screen work. Pen, Eraser and touch
share the same ID iirc (haven't tinkered with it ever since). Also with this
tablet there seems to be some sort of correction by itself using the tilt
sensors like the MS Surface has (Cursor jumping to the point when actually
touching the screen with the tip in Krita)
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