On Freitag, 24. Januar 2014 01:07:57 CEST, ... wrote: > $ Xephyr -ac -br -noreset -screen 800x600 :0 try $ Xephyr -ac -br -noreset -screen 800x600 :1 :0 is the hosting X11 server display - you need a new one. Stuff that shall run in that xephyr server needs to be informed: $ xterm -display :1 Cheers, Thomas