Bug 515079 (vince)

Summary: Event in touchscreen locks touchpad position
Product: [Plasma] kwin Reporter: kinta <aleixq>
Component: inputAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: normal CC: duha.bugs, vince, xaver.hugl
Priority: NOR    
Version First Reported In: 6.5.90   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: Video showing issue
touchscreen evtest
touchpad evtest

Description kinta 2026-01-25 21:41:42 UTC
Created attachment 188874 [details]
Video showing issue

SUMMARY
My laptop has several inputs:

/dev/input/event0:      Sleep Button
/dev/input/event1:      Lid Switch
/dev/input/event10:     Wacom HID 5289 Finger
/dev/input/event11:     TPPS/2 Elan TrackPoint
/dev/input/event12:     sof-hda-dsp Mic
/dev/input/event13:     sof-hda-dsp Headphone
/dev/input/event14:     PC Speaker
/dev/input/event15:     sof-hda-dsp HDMI/DP,pcm=3
/dev/input/event16:     sof-hda-dsp HDMI/DP,pcm=4
/dev/input/event17:     sof-hda-dsp HDMI/DP,pcm=5
/dev/input/event18:     LogiOps Virtual Input
/dev/input/event2:      Power Button
/dev/input/event3:      AT Translated Set 2 keyboard
/dev/input/event4:      ThinkPad Extra Buttons
/dev/input/event5:      Video Bus
/dev/input/event6:      Intel HID events
/dev/input/event7:      ELAN0674:00 04F3:3193 Mouse
/dev/input/event8:      ELAN0674:00 04F3:3193 Touchpad
/dev/input/event9:      Wacom HID 5289 Pen

Touchpad works fine, and when touching screen the behavior is correct, but as soon as it happens, trying to use touchpad is not possible as cursor position is locked at right bottom position. It worked as it should in 6.5.5
To make touchpad work again  I need to run evtest for touchpad device.


STEPS TO REPRODUCE
1. Use the touchpad (cursor is shown and events are ok).
2. Use the touchscreen (events are ok, but cursor is placed at right bottom of the screen)  
3. Use the touchpad again: Something keep setting the cursor and events coordinates at right bottom position  

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.5.90
KDE Frameworks Version: 6.22.0
Qt Version: 6.11.0
Kernel Version: 6.18.6-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 11th Gen Intel® Core™ i5-1135G7 @ 2.40GHz
Memory: 16 GiB of RAM (15.3 GiB usable)
Graphics Processor: Intel® Iris® Xe Graphics
Manufacturer: LENOVO
Product Name: 20W8000ESP
System Version: ThinkPad X13 Yoga Gen 2

ADDITIONAL INFORMATION

Added video of the issue.
Comment 1 kinta 2026-01-25 21:42:40 UTC
Created attachment 188875 [details]
touchscreen evtest
Comment 2 kinta 2026-01-25 21:43:03 UTC
Created attachment 188876 [details]
touchpad evtest
Comment 3 vinceduc 2026-01-26 07:44:16 UTC
same bug for me since upgrade to kde plasma 6.6 beta.
(2-1 chuwi hi10max with goodix touchscreen)

Operating System: KDE neon Testing Edition
KDE Plasma Version: 6.5.90
KDE Frameworks Version: 6.23.0
Qt Version: 6.10.1
Kernel Version: 6.14.0-37-generic (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® N100
Memory: 12 Go of RAM (11.4 Go usable)
Graphics Processor: Intel® Graphics
Manufacturer: CHUWI Innovation And Technology(ShenZhen)co.,Ltd
Product Name: Hi10 Max
Comment 4 kinta 2026-01-27 08:45:48 UTC
Just adding that mouse has also the same touchpad behavior, is also locked at bottom right position as soon as touch screen event happens.
Comment 5 Zamundaaa 2026-01-28 00:18:24 UTC

*** This bug has been marked as a duplicate of bug 514397 ***