https://bugs.kde.org/show_bug.cgi?id=399072
Bug ID: 399072
Summary: Horizontal Lines Displayed in Kate with Fractional
HiDPI Scaling
Product: kate
Version: 18.08.1
Platform: Archlinux Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: kwrite-bugs-n...@kde.org
Reporter: bugreporte...@gmail.com
Target Milestone: ---
SUMMARY
This may be related to bug #373232 for Konsole. As in Konsole, Kate displays
random horizontal lines when fractional (e.g., 1.3, 1.7) display scaling is
used on HiDPI displays. The workaround is to use integer scaling, but this is
impractical on many modern devices with 2K or 4K display and laptop-sized
displays.
STEPS TO REPRODUCE - on hardware with a high resolution screen such as 2K
1. Open System Settings > Display & Monitor > Scale Display
2. Select a non-integer scale factor and save the setting
3.
OBSERVED RESULT
Horizontal lines randomly appear which are not part of the document, especially
when selecting text or scrolling.
EXPECTED RESULT
A document which is displayed corrected with no extraneous horizontal lines or
other visual artifacts.
SOFTWARE VERSIONS
KDE Plasma Version: 5.13.5
KDE Frameworks Version: 5.50.0
Qt Version: Qt 5.11.1 (built against 5.11.1)
QMake version 3.1
ADDITIONAL INFORMATION
Please see
https://bugs.kde.org/show_bug.cgi?id=373232
https://bugsfiles.kde.org/attachment.cgi?id=109683
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