On Tue, 30 Jan 2007 16:31:21 +1100 Zhasper <[EMAIL PROTECTED]> wrote:
> On the machine that you're trying to connect to, try running (as root) > netstat -ntlp for me. > > I think you'll find that X isn't listening on any TCP socket. It > certainly isn't on my ubuntu desktop. > > If you look in /etc/gdm/gdm.conf, you'll find: > > # If true this will basically append -nolisten tcp to every X command > # line, a good default to have (why is this a "negative" setting? > # because if it is false, you could still not allow it by setting > # command line of any particular server). It's probably better to > # ship with this on since most users will not need this and it's more > # of a security risk then anything else. Note: Anytime we find a > # -query or -indirect on the command line we do not add a "-nolisten > # tcp", as then the query just wouldn't work, so this setting only > # affects truly local sessions. > DisallowTCP=true > > I would think that at a minimum you need to set that to "False" and > restart GDM; once it's listening on a socket (you probably want to > make it only listen on 127.0.0.1 - implementing this is left as an > exercise for the reader), you should be able to connect to it. > > Also, I note that you're using Xubuntu, so (unless you installed it > yourself), GDM will be the wrong thing to look at - again, finding the > correct file is left as an exercise for the reader, as is finding some > way to do this that doesn't involve messing with text config files. > > Feel free to flame me off-list and I'll try to help with the > exercises :) No flames either on or off the list! Thanks for your thoughts on this. I will pursue them tomorrow and report back. Cheers, alan > > On 29/01/07, Alan L Tyree <[EMAIL PROTECTED]> wrote: > > On Mon, 29 Jan 2007 09:58:56 +1100 > > Peter Hardy <[EMAIL PROTECTED]> wrote: > > > > > Alan L Tyree wrote: > > > > It fails with all programs. > > > > > > > > The problem is that the DISPLAY variable is not getting set. > > > > After logging into both machines with ssh -X machine_name > > > > > > > > ----------------------------- > > > > [EMAIL PROTECTED]:~$ echo $DISPLAY > > > > localhost:10.0 ** Ubuntu machine where everything > > > > works ----------------------------- > > > > [EMAIL PROTECTED]:~$ echo $DISPLAY > > > > ** Xubuntu machine where nothing works > > > > [EMAIL PROTECTED]:~$ > > > > ------------------------------ > > > > > > > > The /etc/ssh/sshd_config files are the same in both machines. > > > > > > > > I don't know how DISPLAY gets set > > > > > > If you add -vv to your ssh flags, you'll see something like: > > > > > > debug2: x11_get_proto: /usr/X11R6/bin/xauth -f > > > /tmp/ssh-2fcsElfWeT/xauthfile generate 127.0.0.1:0.0 > > > MIT-MAGIC-COOKIE-1 untrusted timeout 1200 2>/dev/null > > > debug2: x11_get_proto: /usr/X11R6/bin/xauth -f > > > /tmp/ssh-2fcsElfWeT/xauthfile list 127.0.0.1:0.0 2>/dev/null > > > debug1: Requesting X11 forwarding with authentication spoofing. > > > debug2: channel 0: request x11-req confirm 0 > > > > > > after the connection is authenticated. > > > > > > Every time I've had a problem like this, it was because xauth > > > wasn't installed on the server. > > > > > > > debug2: x11_get_proto: /usr/bin/X11/xauth list :0.0 2>/dev/null > > debug1: Requesting X11 forwarding with authentication spoofing. > > debug2: channel 0: request x11-req confirm 0 > > debug2: client_session2_setup: id 0 > > debug2: channel 0: request pty-req confirm 0 > > debug1: Sending environment. > > debug1: Sending env LANG = en_AU.UTF-8 > > debug2: channel 0: request env confirm 0 > > debug2: channel 0: request shell confirm 0 > > debug2: fd 3 setting TCP_NODELAY > > debug2: callback done > > debug2: channel 0: open confirm rwindow 0 rmax 32768 > > debug2: channel 0: rcvd adjust 131072 > > Linux misty 2.6.17-10-powerpc #2 Tue Dec 5 22:00:09 UTC 2006 ppc > > > > [EMAIL PROTECTED]:~$ echo $DISPLAY > > > > [EMAIL PROTECTED]:~$ > > [EMAIL PROTECTED]:~$ type xauth > > xauth is /usr/bin/xauth > > > > > > Sigh! I don't **need** to ssh -X into this machine, so maybe I'll > > stop wasting time on it. Very frustrating. > > > > Alan > > > > > -- > > > Pete > > > -- > > > SLUG - Sydney Linux User's Group Mailing List - > > > http://slug.org.au/ Subscription info and FAQs: > > > http://slug.org.au/faq/mailinglists.html > > > > > > > > > -- > > Alan L Tyree http://www2.austlii.edu.au/~alan > > Tel: +61 2 4782 2670 Mobile: +61 427 486 206 > > Fax: +61 2 4782 7092 FWD: 615662 > > -- > > SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ > > Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html > > > > > > > -- > There is nothing more worthy of contempt than a man who quotes himself > - Zhasper, 2004 > -- Alan L Tyree http://www2.austlii.edu.au/~alan Tel: +61 2 4782 2670 Mobile: +61 427 486 206 Fax: +61 2 4782 7092 FWD: 615662 -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
