Sharing locale and virtual Desktop at the same Time

[Judge Richter]

Hi,

i have TigerVNC-Server running to share the locale (the "real") desktop to other machines in the network. TigerVNC can also share a virtual desktop (as tightvnc does). But how can i share both at the same time? The locale desktop is :0 and the virtual desktop should be display :1. The password file for the locale desktop is ~/.vnc/passwd and the file for the virtual desktop is ~/.vnc/passwd-virt.

x0vncserver -passwordfile /home/user/.vnc/passwd-virt -display :1

there is an error

x0vncserver: unable to open display ":1"

The same with other displays. e.g. :2