I suspect the X server in TCE does not offer proper XINERAMA support.
So nxagent does not know about multiple monitors. You can check with
xdpyinfo -ext XINERAMA on the TCE X server (don't know how to access
that.)

On Mon, Jul 24, 2017 at 3:16 PM, Walid MOGHRABI
<w.moghr...@servicemagic.eu> wrote:
> Package: x2gothinclient
> Version: 4.1.0.0-2017.03.11
>
> Using latest Arctica's NX-Libs xrandr support is far better and multihead 
> support in fullscreen mode with the Linux x2goclient works like a charm.
> For example, with MATE, the panels are restricted to the first screen and the 
> second one is acting like a real secondary screen in extended desktop mode 
> with working boundaries when putting applications in fullscreen (ie. they 
> don't extend to the whole display as before but they are restricted to their 
> including screen).
>
> So with the Linux client installed on a desktop (I'm personaly using Ubuntu 
> 16.04 + Unity desktop) it works great whereas, in TCE / Displaymanager mode, 
> multiple monitors are supported but the desktop is stretched as if it was 
> only one big screen and not 2 separated screens.
>
> Any idea why, using the same base OS and libs (Ubuntu 16.04 + X2Go client 
> "Heuler" + Arctica libs) I get different multiscreen support ?
> I think this is related to randr support but I don't know what differs and 
> why it behaves differently on one case and the other.
>
> Regards,
> Walid Moghrabi
>
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