I would like to log in from machine A to machine B -- and regardless or whether anyone is logged in on B* open a new graphical terminal on :1**.To further clarify: This is a lab situation with one supervisor and ~30 guest machines. On the guest machines [e.g. B-Z], a user may or may not be logged in. Regardless of whether a user is logged in, I would like administrator [A] to be able to control the displays (and terminal selection) of the guest machines [B-Z]. [Something such as iTalc would be good -- but it's not working and that's a different question.] *If someone was logged in I could grab their Xauthority and set DISPLAY=:0 and execute images on their screen, e.g., with xroot **Or it's possible to use xroot to startx, which is just a wrapper for xinit. E.g. xroot startx -- :1 & then xroot chvt 1 -- but a new WM starts with root privileges. How can I ssh into the machine (on which I have root permissions) and start a new X session whether or not anyone is logged in? (Ideally, without the terminal window showing up)As is, with:xinit --:1 the error message:(EE)  Fatal server error: (EE) Server is already active for display 0is generated. Which seems odd, as xinit was passed :1.[The machines are using XDM]
Open new graphic terminal via ssh
debian;ssh;x11;xorg;xinit