Path: utzoo!attcan!uunet!van-bc!ubc-cs!alberta!ncc!idacom!danny
From: danny@idacom.uucp (Danny Wilson)
Newsgroups: comp.sys.apollo
Subject: Re: Apollo termcap and rlogin
Message-ID: <1990Jun1.230126.7533@idacom.uucp>
Date: 1 Jun 90 23:01:26 GMT
Organization: IDACOM Electronics Ltd.
Lines: 58


> kerr@tron.UUCP (Dave Kerr) writes
>
>[ problem with rlogin and emacs deleted ]
>
>>	When entering a command, nothing is echoed and nothing
>>	happens until a CONTROL-J is pressed, when the command
>>	then get echoed and executed.  Can anyone explain this.
>>	What we are doing is running the vt100 emulator and
>>	setting the term type to vt100 on the sun.
>>
>>	Mike Walsh
>>	walsh@stdc01  {...!uunet!mcnc!rti!stdc01!walsh}
>
>Mike,
>I've experienced similar things here, doing an rlogin from SR10.1 apollos to 
>an Ultrix Vax. Things would work fine for a while, then the session would 
>appear to lock up. I discovered that a ^J would echo the command line just
>as you describe above. 

I posted this problem to the net about 6 months ago, but not much
has been done in the meantime in terms of fixes etc.

The problem seems to be that the terminal driver gets a little confused
when going through rlogin.  The problem doesn't have anything to do
with the vt100 emulator.

A strange thing you may notice is seeing a '!' character print
about 1 second before the login message of the remote host.

	!Last login: Wed May 30, 1990 etc etc
	SunOS 4.0 etc etc

I have tried doing rlogins in every combination between Apollo,
Sun, and Vax (BSD4.3) and only see that when login FROM and apollo
to something else (even another apollo).

From time to time, carriage returns are lost and only ^J is
interpreted as end of line.

WORKAROUND:

It this happens, simply suspend and resume the rlogin session.
This will bring the tty driver back into sanity.

eg.	apollo% rlogin sun
	!Last login: Wed May 30, 1990 etc etc
	SunOS 4.0 etc etc
	sun%				( no response here )
	^J
	sun% ~^Z			( to suspend rlogin )
	apollo%  fg
	sun% 				( all ok now )
-- 
Danny Wilson			danny@idacom.uucp
IDACOM Electronics		alberta!idacom!danny
Edmonton, Alberta	X.400	danny@idacom.cs.ubc.cdn	
C A N A D A		Voice	+1 403 462 4545