https://bugs.kde.org/show_bug.cgi?id=423545
Bug ID: 423545 Summary: Repeating images and bad scaling on 2nd monitor Product: kwin Version: git master Platform: openSUSE RPMs OS: Linux Status: REPORTED Severity: normal Priority: NOR Component: wayland-generic Assignee: kwin-bugs-n...@kde.org Reporter: noaha...@gmail.com Target Milestone: --- SUMMARY When I use my 4K monitor as a second monitor for my laptop (has a 1920x1080 screen), the 4K monitor will appear to be zoomed in 2x (right half of what should be visible is cut off) whether I'm using UI scaling or not. The screen will also repeat the movements of previously rendered UIs that were shown on the 2nd monitor when any part of a UI updates, including non-Qt apps like Firefox. For instance, the broken images will continue to move whenever I hover over a UI element, whenever the text cursor blinks, when ever I type a letter or whenever I move a window. STEPS TO REPRODUCE 1. Log into the "Plasma (Wayland)" or "Plasma (Full Wayland)" session 2. Move a window to the 2nd screen SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20200621 KDE Plasma Version: 5.19.80 KDE Frameworks Version: 5.72.0 Qt Version: 5.15.0 Kernel Version: 5.7.2-1-default OS Type: 64-bit Processors: 4 × Intel® Core™ i7-6500U CPU @ 2.50GHz Memory: 7.6 GiB of RAM Graphics Processor: Mesa DRI Intel® HD Graphics 520 ADDITIONAL INFORMATION My monitor is an LG 27UK650-W 2x UI scaling just results in UIs that are 2x larger, but the screen still looks zoomed in 2x. Video: https://youtu.be/ze-Dk7noE6Y -- You are receiving this mail because: You are watching all bug changes.