Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!ico!clover!dougm
From: dougm@ico.ISC.COM (Doug McCallum)
Newsgroups: comp.windows.x
Subject: Re:  The DISPLAY Variable and a wish list
Message-ID: <15762@clover.ICO.ISC.COM>
Date: 26 Apr 89 13:49:38 GMT
References: <642@mitisft.Convergent.COM>
Reply-To: dougm@ico.ISC.COM (Doug McCallum,violet,114,)
Organization: Interactive Systems Corp., Boulder CO
Lines: 10

In article <642@mitisft.Convergent.COM> kemnitz@mitisft.Convergent.COM (Gregory Kemnitz) writes:
...
>
>o Having LOGIN or XDM set your DISPLAY variable BEFORE exec-ing your login
>  shell

I would suspect that it is set but the System V login is discarding it.
The System V login command only sets a couple of environment variables
and discards those it inherited.  You need to modify login to retain
the DISPLAY variable.