https://bugs.kde.org/show_bug.cgi?id=450139
Bug ID: 450139
Summary: KolourPaint lags significantly when drawing on Wayland
with 125% scale
Product: kolourpaint
Version: 21.12.2
Platform: openSUSE RPMs
OS: Linux
Status: REPORTED
Keywords: wayland
Severity: normal
Priority: NOR
Component: general
Assignee: kolourpaint-supp...@lists.sourceforge.net
Reporter: qydwhotm...@gmail.com
Target Milestone: ---
SUMMARY
On Wayland, 125% scale, drawing a line in KolourPaint has a significant lag
between the cursor and the actual line on the canvas.
STEPS TO REPRODUCE
1. Log in to Wayland, and set 125% scale in Display settings.
2. Open KolourPaint
3. Choose "Line" tool and draw something on the canvas
OBSERVED RESULT
Significant lag
EXPECTED RESULT
No lag like on X11
SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20220210
KDE Plasma Version: 5.24.80
KDE Frameworks Version: 5.91.0
Qt Version: 5.15.2
Kernel Version: 5.16.4-1-default (64-bit)
Graphics Platform: X11
Processors: 8 × AMD Ryzen 7 4700U with Radeon Graphics
Memory: 15.0 GiB of RAM
Graphics Processor: AMD RENOIR
ADDITIONAL INFORMATION
Information for package kolourpaint:
------------------------------------
Repository : unstable-kde-applications
Name : kolourpaint
Version : 22.03.70git.20220128T234302~ec495309-ku.7.1
Arch : x86_64
Vendor : obs://build.opensuse.org/KDE:Unstable
Installed Size : 1.9 MiB
Installed : Yes
Status : up-to-date
Source package : kolourpaint-22.03.70git.20220128T234302~ec495309-ku.7.1.src
Summary : Paint Progra
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