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RDP multi-monitor feature does not work under Wayland

Closed Issue created 3 years ago by M Markwort

Local System Description

Client: Fedora Workstation 35 (x86_64)
Remmina version: 1.4.21
Installation: Distribution package.
Desktop environment: GNOME
Plugin: RDP - freerdp version: 2.4.1
GTK back-end: Wayland

Remote System Description

Server: Windows Server 2019 (Build 1809)
Special notes regarding the remote system: Nothing special

Problem Description

RDP multi-monitor feature does not work under Wayland. On my machine it works unproblematically with the Xorg back-end, but it does not work with the Wayland back-end. The sole problem seems to be, that remmina is not using both monitors when it goes fullscreen. I can tell that, because I discovered that remmina actually draws the correct canvas (or canvases) for my multi-monitor setup. I noticed that, when I switched from dynamic resolution to scaled mode (see screenshot). It is like if GDK_FULLSCREEN_ON_CURRENT_MONITOR is used, instead of GDK_FULLSCREEN_ON_ALL_MONITORS.

What is the expected correct behavior?

If the multi-monitor feature and the dynamic resolution feature are both enabled, Remmina should use both (or all) monitors, instead of only the current monitor.

Relevant logs and/or screenshots

Figure: Proof, that this version of remmina is capable of drawing the correct multi-monitor canvas under Wayland.

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