Hi Folks, A new question! (All this up-to-date Linux stuff is finding the gaps in my obsolete knowledge ...).
I'm currently trying (rather, wanting to try) running X apps remotely on one of my machines, with Gentoo running off the Live CD on the new laptop. So:
A = new laptop, latest Gentoo off live CD X is Xorg
B = old laptop, Red Hat 9 from 2003. X is X11R6
Normally, when I want remote X apps to display locally, I enter
xhost +
locally, and get "connection is allowed from any host". And it then works.
On A, I again enter "xhost +" and still get "connection is allowed from any host". So far so good, it would seem.
However, A has no telnet client, and rlogin won't work, soI have to use ssh to log in from A to B. This seems to work: I log in, I can tour directories, etc.
B knows where I'm coming from:
B:$ who am i ted ..... (192.168.1.8)
which is fine. But it hasn't attributed an X DISPLAY: echo $DISPLAY returns null. So on B I set
export DISPLAY=192.168.1.8:0.0
which is what I'd normally do. But now, when logged in to B, I issue
xterm
There is a delay, and then the message
xterm Xt error: Can't open display: 192.168.1.8:0.0
Does this have something to do with Xorg doing things differently from X11R6? The process I went through above would have worked between any of my X11R6 machines. Or might it have somthing to do with my logging in using ssh rather than telnet (Machine B is set up to be friendly to anything on my LAN 192.168.1.*).
Any suggestions appreciated! Ted.
-------------------------------------------------------------------- E-Mail: (Ted Harding) ted.harding@nessie.mcc.ac.uk Fax-to-email: +44 (0)870 094 0861 Date: 27-Aug-07 Time: 18:00:54 ------------------------------ XFMail ------------------------------
OK -- solved mmy own problem! Found the solution at
http://www.cisl.ucar.edu/docs/ssh/guide/node29.html
and it is to use the "-X" option to ssh.
Bah!! Ted.
On 27-Aug-07 17:00:58, Ted Harding wrote:
Hi Folks, A new question! (All this up-to-date Linux stuff is finding the gaps in my obsolete knowledge ...).
I'm currently trying (rather, wanting to try) running X apps remotely on one of my machines, with Gentoo running off the Live CD on the new laptop. So:
A = new laptop, latest Gentoo off live CD X is Xorg
B = old laptop, Red Hat 9 from 2003. X is X11R6
Normally, when I want remote X apps to display locally, I enter
xhost +
locally, and get "connection is allowed from any host". And it then works.
On A, I again enter "xhost +" and still get "connection is allowed from any host". So far so good, it would seem.
However, A has no telnet client, and rlogin won't work, soI have to use ssh to log in from A to B. This seems to work: I log in, I can tour directories, etc.
B knows where I'm coming from:
B:$ who am i ted ..... (192.168.1.8)
which is fine. But it hasn't attributed an X DISPLAY: echo $DISPLAY returns null. So on B I set
export DISPLAY=192.168.1.8:0.0
which is what I'd normally do. But now, when logged in to B, I issue
xterm
There is a delay, and then the message
xterm Xt error: Can't open display: 192.168.1.8:0.0
Does this have something to do with Xorg doing things differently from X11R6? The process I went through above would have worked between any of my X11R6 machines. Or might it have somthing to do with my logging in using ssh rather than telnet (Machine B is set up to be friendly to anything on my LAN 192.168.1.*).
Any suggestions appreciated! Ted.
E-Mail: (Ted Harding) ted.harding@nessie.mcc.ac.uk Fax-to-email: +44 (0)870 094 0861 Date: 27-Aug-07 Time: 18:00:54 ------------------------------ XFMail ------------------------------
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-------------------------------------------------------------------- E-Mail: (Ted Harding) Ted.Harding@manchester.ac.uk Fax-to-email: +44 (0)870 094 0861 Date: 27-Aug-07 Time: 18:19:02 ------------------------------ XFMail ------------------------------
On Mon, Aug 27, 2007 at 06:00:58PM +0100, Ted Harding wrote:
Normally, when I want remote X apps to display locally, I enter
xhost +
Naughty! don't do that ;)
Any suggestions appreciated!
You will need to edit /etc/ssh/sshd_config (or similar on B) to uncomment the line X11Forwarding yes (or change no to yes, whichever) and restart ssh on B. Then you should be able to ssh from A to B with a command something like ssh -X ip.of.machine.a and then run X apps and have them displayed on A. (and if you do the reverse on A you can ssh from B to A and have it display X apps that way too)
Adam
Hi Folks, A new question! (All this up-to-date Linux stuff is finding the gaps in my obsolete knowledge ...).
I'm currently trying (rather, wanting to try) running X apps remotely on one of my machines, with Gentoo running off the Live CD on the new laptop. So:
Current practice is by default for X servers NOT to listen on tcp port 6666 anymore. You may have to turn in on if you need it.
Peter
-
Adam Bower -
Peter Onion -
Ted.Harding＠manchester.ac.uk -
ted.harding＠nessie.mcc.ac.uk