https://bugs.kde.org/show_bug.cgi?id=509810
Bug ID: 509810
Summary: xfreerdp multimon mirrors first monitor across all
involved screens
Classification: Plasma
Product: kwin
Version First 6.4.5
Reported In:
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: multi-screen
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
After upgrading to Plasma 6.4 my RDP multimonitor sessions stopped working
properly. I was connecting using the FreeRDP flatpak with the xfreerdp command.
I would attempt to open a multimonitor session and while the session would open
across all displays, the first monitor's display was duplicated across all
monitors despite the device I was connected to treating the session as if there
were multiple monitors.
STEPS TO REPRODUCE
1. Emerge latest KDE plasma-meta package for 6.4.5
2. Run flatpak run --command=xfreerdp com.freerdp.FreeRDP /multimon /v:<host>
OBSERVED RESULT
RDP window opens on all screens, but all screens display a mirror of the first
screen.
EXPECTED RESULT
RDP window opens on all screens, extending the display across all of them.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 6.4
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.16
Qt Version: 6.9.2
ADDITIONAL INFORMATION
This appears to be a host display issue, as while the first monitor is mirrored
across all screens, the connected computer appears to think the correct number
of screens are being displayed and acts accordingly. For example, if you open a
window on the first screen and then drag it to the right, the window disappears
indicating that the connected computer thinks it has been moved to the second
screen, but because the host is displaying a mirror of the first on all
monitors we can no longer see the window. I also noticed that the hover preview
on the taskbar appeared to show the correct screen layout (extended) when
minimized but after restoring it still only showed the mirrored display.
I was able to mask all KDE plasma 6.4 packages and downgrade back to 6.3.6 and
the issue went away. I was using the FreeRDP 3.17.1 flatpak for all testing
across both versions.
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