https://bugs.kde.org/show_bug.cgi?id=509046
Bug ID: 509046
Summary: xfreerdp "multimon" option gives corrupted visuals
when direct scanout is enabled in Plasma Wayland
Classification: Plasma
Product: kwin
Version First 6.4.4
Reported In:
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: xwayland
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
Using the "multimon" option in xfreerdp results in flickering and corrupted
visuals. However, disabling direct scanout by adding
KWIN_DRM_NO_DIRECT_SCANOUT=1 to environment variables fixes this issue.
This seems dependent on the monitors used. A setup with two 4k monitors and QHD
ultrawide results in this bug appearing, but another setup using a QHD
ultrawide and a normal QHD monitor works without needing to disable direct
scanout.
Bug report in xfreerdp: https://github.com/FreeRDP/FreeRDP/issues/10098
STEPS TO REPRODUCE
1. Connect to a xfreerdp session using /multimon with multiple monitors
OBSERVED RESULT
Visuals appear to flicker and are corrupted on each monitor as the mouse is
moved.
EXPECTED RESULT
Visuals should not be corrupted.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Arch 6.16.4
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.1
ADDITIONAL INFORMATION
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