Possible Duplicate:Open a window on a remote X display (why “Cannot open display”)? I have a computer running debian, connected to my TV, running an xorg session. What I want to do is ssh into that machine and start an application that will also display on that machine. For example, I want to be able to ssh to it from my laptop and start mplayer on the host, playing a file on the host and showing it on the TV. Is this possible? I have a feeling it should be (relatively) trivial, but I just can't seem to figure it out.Just to clarify, simply running $ ssh -X host$ mplayer movie.avi &won't cut it, because it will start displaying on my laptop's display.
Remotely control an xorg session
ssh;xorg;x11;remote
If you know what $DISPLAY your ssh host's X server is using, e.g. :0.0, the following works for me:ssh hostexport DISPLAY=:0.0Now you can run any graphical app of your choice on your host.  You won't be able to see or control the graphical aspects on/from your laptop, of course.