Re: Help for a new EMC user

[Jon Elson <jmelson-at-artsci.wustl.edu>]

Tim Goldstein wrote:

> Hello All,
>
> I have been trying to help a new user get going with EMC. He used my setup
> script and on RedHat 5.2. Building of the RT kernel seemed to go fine and
> the system seems to be booting into RT Linux just fine. He is using the June
> 2000 version of EMC and it also seems to install just fine. I had given him
> some run and ini files that worked fine on 2 computers I had tested on.
> Below is the messages he has sent to me and my replies. We seem to be stuck
> now that starts with " Application initialization failed: no display name
> and no $DISPLAY"

This sounds like an Xwindows problem.  Is Xwindows running when he tries
to run this (presumably with the TkEMC GUI)?  IF not, he should be
using xemc instead.  There is some procedure that sets the environment
variable $DISPLAY to something like nodename:0:0 when the X server
comes up.  If X is up when he is doing this, then either somebody has
done something that changed this variable, or X is not properly
installed.  If he is trying to run TkEMC from ANOTHER node, then
he must set the $DISPLAY variable to point to that node, and also
set X security to allow the Xserver to accept X connections from the
EMC node.

This should cover the possible problems that would cause this
message.

Jon