https://bugs.kde.org/show_bug.cgi?id=476543
Bug ID: 476543
Summary: Wrong display sizes when Wayland fractional scaling
enabled
Classification: Applications
Product: krdc
Version: 23.08.1
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: VNC
Assignee: uwol...@kde.org
Reporter: david.p.war...@gmail.com
CC: aa...@kde.org
Target Milestone: ---
SUMMARY
When fractional scaling is enabled in the Wayland session, KRDC renders VNC
connections in the wrong resolution. 100% or 200% scaling works correctly.
STEPS TO REPRODUCE
1. Run a VNC server on host (e.g. x11vnc on a machine with a display resolution
of 1280x800).
2. Set monitor scaling on client to 125% or 150%.
3. Connect to host with KRDC.
OBSERVED RESULT
At 125% client monitor scaling, the 1280x800 host screen is rendered as
800x500.
At 150% client monitor scaling, the 1280x800 host screen is rendered as
960x600.
EXPECTED RESULT
The host screen should be rendered as 1280x800.
SOFTWARE/OS VERSIONS
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.10
ADDITIONAL INFORMATION
Remmina, which I understand uses the same libVNCClient backend, has the
'opposite' problem - at 150% scaling, the 1280x800 host screen is rendered as
1920x1200.
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