Hello, here is answer from Stefan Baur for you problem:
First of all, stacking SPICE, X2Go, and Xpra sounds like a perfect recipe for disaster when it comes to debugging weird issues. I would recommend testing with a real X2Go-ThinClient instead. The easiest way for that would be X2Go-TCE-Live on a USB stick - just boot any random PC from it and make sure you can connect to your virtual server environment via IP and SSH, then you should be good to go, and everything you see happening is "the real deal" and not possibly caused by some emulation or forwarding layer. Something that *is* known to cause problems in various desktop environments via NX is compositing. So you want to make sure that it is turned off globally and permanently on the X2Go server. For XFCE4, this can be achieved by saving the following XML <?xml version="1.0" encoding="UTF-8"?> <channel name="xfwm4" version="1.0"> <property name="general" type="empty"> <property name="use_compositing" type="bool" value="false" /> </property> </channel> into the file /etc/xdg/xfce4/xfconf/xfce-perchannel-xml/xfwm4.xml *on the Server*. If you're not using XFCE4, please check how Compositing can be disabled globally, and do so. Best Regards, Juri Grabowski
