Mulit-monitor client | force xpra seamless session to use only specific monitor

[JuergenGleiss]

I'm using a notebook (Windows 11) and one additional external display.

• notebook 13": 1920 x 1080, 175% scale
• external display 1: 27", 2560x440, 100% scale
• xpra version on both side 6.2.2, seamless mod

At the moment, I have no control over the position where a new window or program is opened. Sometimes windows are positioned incorrectly and the parts of the window are out of sight. It is difficult to move the window. Due to the different resolutions and scales, the behavior is probably very difficult to control. An additional parameter, which specifies the monitor to be used for the seamless session, would simply solve my problem.

eg:
xpra start ssh://10.0.0.1/100 --use-monitor=2 --start-client=xterm
XPRA only uses the 2nd monitor and the client reports desktop size: 2560x1440

[totaam]

At the moment, I have no control over the position where a new window or program is opened

That's expected.
Windows can choose where they want to appear on screen, and if they don't then the client OS is free to place them where it wants.

Sometimes windows are positioned incorrectly and the parts of the window are out of sight

You have not specified your server OS, my guess is that it is a Debian variant and this is known issue with Xvfb which is unable to virtualize monitors.

An additional parameter, which specifies the monitor to be used for the seamless session, would simply solve my problem

Overriding both the application and the OS is difficult and will result in new bugs, especially on MS Windows because the geometry reported by the OS is not the actual one and it is also modified some more by Gtk.