[comp.windows.x] cannot open display

davis@honda.honda.com (davis) (03/14/90)

I have just installed the server for a Graphon X window
terminal on a Sun3 (Sun OS 4.0.3, X11R3). Everything works
OK when I run the sample client programs that came with
the server. But when I try to run programs I have written
I am not able to specify the display using the host name.
It works when I use:

IP_address:display    or
unix:display

It cannot connect to the server when I use:

host_name:display

The call to XOpenDisplay returns a NULL pointer. Also, access
control has been disabled. What am I forgetting to do?

Thanks,
B. Davis