SUMMARY The relative positioning of my dual-screen setup occasionally changes unexpectedly. STEPS TO REPRODUCE 1. Start a KDE Plasma session. OBSERVED RESULT After initiating a KDE Plasma session, the screen layout occasionally shifts without any user input. This is not due to manual changes in System Settings—it changes on its own. The new arrangement is incorrect: for example, one screen may appear partially above the other (see screenshot), or a gap may form between them. These layout issues occur roughly once a month. EXPECTED RESULT The screen layout should remain stable and not change randomly between sessions. SOFTWARE/OS VERSIONS Operating System: Kubuntu 25.04 KDE Plasma Version: 6.3.4 KDE Frameworks Version: 6.12.0 Qt Version: 6.8.3 Kernel Version: 6.14.0-35-generic (64-bit) Graphics Platform: Wayland Processors: 8 × Intel® Core™ i7-7700HQ CPU @ 2.80GHz Memory: 15.5 Gio of RAM Graphics Processor 1: Intel® HD Graphics 630 Graphics Processor 2: llvmpipe Manufacturer: LENOVO Product Name: 80WK System Version: Lenovo Y520-15IKBN
> see screenshot I think you forgot to attach it. Please attach ~/.config/kwinoutputconfig.json and the output of > kscreen-doctor -o and > drm_info once for when the configuration is correct, and once for when it changed.
Created attachment 186558 [details] screenshot.jpg
Created attachment 186559 [details] kwinoutputconfig.json ~/.config/kwinoutputconfig.json (correct configuration)
Correct configuration: ~$ kscreen-doctor -o Output: 1 eDP-1 enabled connected priority 1 Panel Modes: 1:1920x1080@60*! 2:1280x1024@60 3:1024x768@60 4:1280x800@60 5:1920x1080@60 6:1600x900@60 7:1368x768@60 8:1280x720@60 Geometry: 0,216 1536x864 Scale: 1.25 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: Automatic HDR: incapable Wide Color Gamut: incapable ICC profile: none Color profile source: sRGB Color power preference: prefer efficiency and performance Brightness control: supported, set to 100% and dimming to 100% Output: 2 HDMI-A-1 enabled connected priority 2 HDMI Modes: 9:1920x1080@60*! 10:1920x1080@60 11:1920x1080@60 12:1920x1080@50 13:1920x1080@50 14:1680x1050@60 15:1600x900@60 16:1280x1024@60 17:1440x900@60 18:1280x800@60 19:1280x720@60 20:1280x720@60 21:1280x720@60 22:1280x720@50 23:1280x720@50 24:1024x768@60 25:800x600@60 26:720x576@50 27:720x576@50 28:720x480@60 29:720x480@60 30:720x480@60 31:720x480@60 32:720x480@60 33:640x480@60 34:640x480@60 35:720x400@70 Geometry: 1536,0 1920x1080 Scale: 1 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: Automatic HDR: incapable Wide Color Gamut: incapable ICC profile: none Color profile source: sRGB Color power preference: prefer efficiency and performance Brightness control: supported, set to 100% and dimming to 100%
Created attachment 186561 [details] drm-info.txt drm-info.txt (correct configuration)
For the wrong configuration, I suppose I have to wait a couple of weeks until it occurs again.
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