[ale] Remote X - $ xhost: unable to open display ""

[Michael Kachline ext 2848]

On 21 Sep 2002, Andrew Grimmke wrote:

> Thanks Michael,
> 
> That worked.  I open a native X display, then I can telnet in and and
> run an xterm on the local server and start x apps from that xterm.  How
> do I run a window manager?  when I try to run a window manager from the
> command line, it tells me there can't be more than one (the remote
> computer is on and running Gnome/Sawfish).


	Ah. If you are using "startx" to get into X-windows on your 
"local" box, then, modify your localbox "$HOME/.xinitrc" file. Make it 
look like:

#!/bin/sh
xhost +remotebox
xterm

When you type "startx", you will get a simple xterm (with no window 
decorations). Working in that xterm, telnet to remotehost, and then start 
the appropriate WM environment of your choice.

If, instead of "startx", you usea GUI based login on the local box, then 
simply chooose the "failsafe" login option. That will typically give you 
an xterm with no local window manager.


... Sounds like what you *really* want to do is an XDMCP session:

remotehost$ /bin/su
remotehost# /sbin/init 5
Your remotehost now runs some form of "xdm". Hopefully, gdm, kdm or xdm is 
configured to allow incoming xdmcp requests from "localbox", and your 
network firewalling allows xdmcp packets from "localbox".


localbox$
Get out of X-windows.

localbox$ X -query remotebox

You should then find an X based login "screen" similar to what you see on 
"remotehost's" console. If you don't, that's a whole new set of 
challenges.


---

Anybody know how to configure localbox's /etc/X11/xdm/* s.t., upon running 
"/sbin/init 5" on localbox, the X server will automagically query to 
remotebox?



							- Mike
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 Michael Kachline
 Systems Programmer

 Intec Telecom Systems
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