https://bugs.kde.org/show_bug.cgi?id=466504
Bug ID: 466504
Summary: External touchscreen monitor maps to wrong monitor (in
wayland and X11)
Classification: Plasma
Product: KScreen
Version: 5.27.1
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: kel...@kelvie.ca
Target Milestone: ---
SUMMARY
***
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***
STEPS TO REPRODUCE
1. Connect an external monitor with touchscreen via USB-C / DP alt mode (or via
USB for the input device, and HDMI for the display)
2. Extend the desktop to the external touchscreen monitor
OBSERVED RESULT
The touchscreen input gets mapped to the wrong monitor
EXPECTED RESULT
The touchscreen input device should be mapped to just the touchscreen display.
Or at least this should be configurable, since it's basically impossible to
detect what touchscreen belongs to what monitor (although there are heuristics,
such as both plugged in at nearly the same time)
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.27.1
KDE Frameworks Version: 5.103.0
Qt Version: 5.15.8
Kernel Version: 6.1.12-arch1-1 (64-bit)
ADDITIONAL INFORMATION
lsusb shows the touchscreen as:
Bus 005 Device 025: ID 222a:0001 ILI Technology Corp. Multi-Touch Screen
kscreen-doctor shows:
~ kscreen-doctor -o
Output: 1 eDP-1 enabled connected priority 2 Panel Modes: 0:2256x1504@60*!
1:2256x1504@48 2:1600x1200@60 3:1280x1024@60 4:1024x768@60 5:1920x1200@60
6:1280x800@60 7:1920x1080@60 8:1600x900@60 9:1368x768@60 10:1280x720@60
Geometry: 1920,0 1805x1203 Scale: 1.25 Rotation: 1 Overscan: 0 Vrr: incapable
RgbRange: Automatic
Output: 2 DP-4 enabled connected priority 1 DisplayPort Modes: 0:3840x2160@60*!
1:3840x2160@50 2:3840x2160@30 3:3840x2160@30 4:3840x2160@30 5:3840x2160@25
6:3840x2160@24 7:3840x2160@24 8:2560x1440@60 9:1920x1080@60 10:1920x1080@60
11:1920x1080@60 12:1920x1080@60 13:1920x1080@60 14:1920x1080@50 15:1920x1080@30
16:1920x1080@30 17:1920x1080@25 18:1920x1080@24 19:1920x1080@24 20:1400x1050@60
21:1280x1024@60 22:1440x900@60 23:1280x960@60 24:1280x720@60 25:1280x720@60
26:1280x720@60 27:1280x720@50 28:1280x720@30 29:1280x720@30 30:1280x720@25
31:1280x720@24 32:1280x720@24 33:1024x768@60 34:800x600@60 35:720x480@60
36:720x480@60 37:720x480@60 38:720x480@60 39:640x480@60 40:640x480@60
41:640x480@60 42:1600x1200@60 43:1280x1024@60 44:1024x768@60 45:2560x1600@60
46:1920x1200@60 47:1280x800@60 48:3200x1800@60 49:2880x1620@60 50:2560x1440@60
51:1920x1080@60 52:1600x900@60 53:1368x768@60 54:1280x720@60 Geometry: 0,0
1920x1080 Scale: 2 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: Automatic
where DP-4 is the touchscreen monitor I want to map it to, but it always maps
to eDP-1 (and on another system it mapped to DP-2 instead of HDMI-0 like it was
supposed to)
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