Sorry about the previous blank reply, hit the wrong button.
However, from what I read in the man pages, ssh -X hostname ought to be
all that is necessary. Remote display between Macs and linux hasn't
been working for me for a while either (it works with local Suns). I
don't know whether this is due to something Apple has done or something
I had done - I had figured the latter, since it works with the Suns.
But I can't open an X window from my G5 to my laptop either. I get an
"Error: Can't open display xxx.xxx.xxx.xxx:0"
from "man ssh"
X11 and TCP forwarding
If the ForwardX11 variable is set to ``yes'' (or, see the
description of
the -X and -x options described later) and the user is using X11
(the
DISPLAY environment variable is set), the connection to the X11
display
is automatically forwarded to the remote side in such a way that
any X11
programs started from the shell (or command) will go through the
encrypted channel, and the connection to the real X server will be
made
from the local machine. The user should not manually set DISPLAY.
For-
warding of X11 connections can be configured on the command line
or in
configuration files.
The DISPLAY value set by ssh will point to the server machine, but
with a
display number greater than zero. This is normal, and happens
because
ssh creates a ``proxy'' X server on the server machine for
forwarding the
connections over the encrypted channel.
ssh will also automatically set up Xauthority data on the server
machine.
For this purpose, it will generate a random authorization cookie,
store
it in Xauthority on the server, and verify that any forwarded
connections
carry this cookie and replace it by the real cookie when the
connection
is opened. The real authentication cookie is never sent to the
server
machine (and no cookies are sent in the plain).
-X Enables X11 forwarding. This can also be specified on a
per-host
basis in a configuration file.
X11 forwarding should be enabled with caution. Users with
the
ability to bypass file permissions on the remote host (for
the
user's X authorization database) can access the local X11
display
through the forwarded connection. An attacker may then be
able
to perform activities such as keystroke monitoring.
On Sep 30, 2004, at 10:41 AM, email@hidden wrote:
Message: 1
Date: Wed, 29 Sep 2004 15:11:10 -0400
From: Scott Hannahs <email@hidden>
Subject: Re: display exporting from an OS X box
To: Andrei Sobolevskii <email@hidden>,
email@hidden
Message-ID: <p0611041bbd80b89371d9@[146.201.232.114]>
Content-Type: text/plain; charset="us-ascii"
Well since you are logging in as an ssh there is nothing that tells
the host that it is an X session so the DISPLAY variable is not set.
Since SSH is a pure text kind of connection then you need to manually
set the DISPLAY variable.
Also,
If you notice in your sshd_config file there is a line
X11DisplayOffset 10
so that all forwarded displays are offset by 10. Therefore I think
you want DISPLAY to be :0.10
-Scott
At 20:45 +0400 9/29/04, Andrei Sobolevskii wrote:
Dear All,
I am sorry for this off-topic question, but I spend half a day trying
to find an answer myself before writing to the list, and the question
is for Unix people anyway.
I am trying to run X Window apps on my PowerBook (OS X 10.2.8)
remotely via SSH, but the display won't be exported. In a simple
test, I get the following (in an xterm window):
Of course running any X app in this "remote" session results in the
"Unable to open the display" error. How does one fix this?
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