https://bugs.kde.org/show_bug.cgi?id=406770
Bug ID: 406770 Summary: Recent anti-aliasing change is causing black lines on HiDPI displays Product: konsole Version: master Platform: Other OS: Linux Status: REPORTED Severity: normal Priority: NOR Component: general Assignee: konsole-de...@kde.org Reporter: b...@geekworld.dk Target Milestone: --- Created attachment 119556 --> https://bugs.kde.org/attachment.cgi?id=119556&action=edit screenshot of mc after antialiasing change SUMMARY The commit ed5fa1f855a05ba82fe4f2f6d3ead803aa5eefdb introduced painter antialiasing which added unwanted black lines in programs like mc, iptraf-ng, etc, i.e. console applications with colored background when running with a scale factor e.g. 1.5. I would suggest to only use antialiasing in the painter when scaling is not activated until a real fix is there. Commenting out TerminalDisplay.cpp:1262 fixes the problem (but reintroduces #397985, so a real fix is needed), the line: paint.setRenderHint(QPainter::Antialiasing, _antialiasText); STEPS TO REPRODUCE 1. Set scale to 1.5 2. Start konsole 3. Run mc OBSERVED RESULT Black lines under every row EXPECTED RESULT A clean look SOFTWARE/OS VERSIONS KDE Plasma Version: 5.12.8 KDE Frameworks Version: 5.55.0 Qt Version: 5.9.7 Konsole master gives the result in the screenshot ADDITIONAL INFORMATION -- You are receiving this mail because: You are watching all bug changes.