Experimental Physics and
Industrial Control System

Ralph Lange <[email protected]> · Tue, 7 Sep 2004 10:09:10 +0200

This is not an EPICS related issue, but points to problems in your
general system configuration and/or design.
Nevertheless I will try to give you some hints:

You have two general options:

1) Running the edm on the Sun host, using your Linux system as an
   X-Terminal.

   a) Set the DISPLAY variable in your Sun window to point to your Linux
      machine, usually this would be: <your_machine_name>:0.0
      Allow applications on the Sun machine to connect to your X server by
      setting "xhost +<sun_machine_name>" in a local Linux terminal window.

   b) A good and far more secure alternative would be using the Secure
      Shell (ssh) to log onto the Sun and configure it to tunnel the X
      connection. In that case you do not have to set the DISPLAY
      manually nor to open up access to your X server for the Sun.

   At that point you should be able to start X Clients (like edm) on the
   Sun machine (a good test is running "xclock" which should pop up a
   clock on your screen).

2) Running the edm locally.

   If you compile EPICS and the edm extension for Linux (or have your
   EPICS administrators compile it and put it on the file server), you
   can run edm locally on your Linux machine without logging onto the
   Sun server.

   In that case (if your PATH contains the location of the Linux version
   and the EPICS and edm libraries are in the right place) you can just
   start edm in a local Linux window.

Your EPICS and system administrators should be able to tell you which of
these options is the one to use.

Also the man pages of the X and ssh programs contain a lot more detailed
information.

Hope this helps,
Ralph

>>>>> "xuguanglei" == xuguanglei  <[email protected]> writes:

  > hello,
  > when i use win2k,i can use exceed to login sun,then i can display medm
  > when i type medm
  > if i want use linux to login sun,when i type medm,it says 
  > servername username>medm
  > Error: Can't open display: username:0.0

  > if i only install medm of epics,can it work without this Error?

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System