https://bugs.kde.org/show_bug.cgi?id=424254
Bug ID: 424254 Summary: Mirroring internal laptop 4k screen to external 1080p screen shows clipped output on external screen Product: kwin Version: git master Platform: Other OS: Linux Status: REPORTED Severity: grave Priority: NOR Component: general Assignee: kwin-bugs-n...@kde.org Reporter: n...@kde.org Target Milestone: --- Created attachment 130148 --> https://bugs.kde.org/attachment.cgi?id=130148&action=edit Clipped output rather than scaled output All KDE software built from source today on top of openSUSE Tumbleweed. STEPS TO REPRODUCE 1. Have a laptop with a 4k screen 2. Set appropriate >100% scale factor in KScreen KCM (I'm using 250%) 2. Plug in an external 1080p screen via HDMI OBSERVED RESULT External screen shows only the top-left quarter of the internal screen. See attached screenshot. EXPECTED RESULT external screen shows an exact mirror of the internal screen, but scaled to fit rather than clipped. ADDITIONAL INFORMATION Reproduces both with and without PLASMA_USE_QT_SCALING=1 set in the environment, so it doesn't seem to be related to that. -- You are receiving this mail because: You are watching all bug changes.