Bug 510348

Summary: Cursor moving to top left of screen when hittilg borders using KDE Connect on my phone
Product: [Applications] kdeconnect Reporter: elliotengblom
Component: android-applicationAssignee: Albert Vaca Cintora <albertvaka>
Status: REPORTED ---    
Severity: minor CC: andresgarcia0313, andrew.g.r.holmes, bamajoe908, gamingtiger8313, herdem09, persson1589
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Android   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description elliotengblom 2025-10-07 16:28:48 UTC 
SUMMARY
The cursor snaps up into the left corner when it hits the borders of the screen while controlling the cursor via KDE Connect on my phone.

STEPS TO REPRODUCE
1. Enable and pair Android phone with desktop PC, KDE Connect
2. Have PC connected to a single monitor
3. Set PC resolution to 4K (3840×2160) at 200% global scale
4. In the Android app, use external input option(?) to move the mouse to the edge of the screen.
5. Move the cursor into one of four borders of the screen.

OBSERVED RESULT
It looks like when the cursor hit a border, the x and y coordinates of the cursor were divided by 2. I'm unsure whether it has to do with my monitor being 4K or 200% global scale, but I suspect that to be the issue. 

EXPECTED RESULT
I expected that the cursor would move along the border of the screen, not divide its distance from the top left corner by 2.

SOFTWARE/OS VERSIONS
KDE Plasma Version: 6.2.5
KDE Frameworks Version: 6.9.0
Qt Version: 6.8.1

ADDITIONAL INFORMATION
I'm running SteamOS on my PC, version 3.7.15
Comment 1 herdem09 2025-11-01 15:00:29 UTC 
It seems there are multiple reports caused by the same issue. The common factor seems to be the scaling on x11.
https://bugs.kde.org/show_bug.cgi?id=507134
https://bugs.kde.org/show_bug.cgi?id=486786
https://bugs.kde.org/show_bug.cgi?id=416931
Comment 2 herdem09 2025-11-01 15:01:41 UTC 
*** Bug 507134 has been marked as a duplicate of this bug. ***
Comment 3 herdem09 2025-11-01 15:02:00 UTC 
*** Bug 486786 has been marked as a duplicate of this bug. ***
Comment 4 herdem09 2025-11-01 15:02:19 UTC 
*** Bug 416931 has been marked as a duplicate of this bug. ***
Comment 5 Albert Vaca Cintora 2025-11-01 18:06:50 UTC 
Even though the other reports mention X11, SteamOS uses Wayland, right? I can't reproduce it on wayland.
Comment 6 Ray 2025-11-04 08:38:42 UTC 
(In reply to Albert Vaca Cintora from comment #5)
> Even though the other reports mention X11, SteamOS uses Wayland, right? I
> can't reproduce it on wayland.

 steamOS (my version at least) does not use Wayland, it looks to be X11 by default. 

Came into contact with this bug as well when trying to use KDE connect with my steam deck to control the mouse with my phone.