X forwarding inside emacs without an extra terminal
I'm trying open a remote emacsclient with X forwarding without requiring a local terminal sshed to the remote host. When I say 'with X forwarding' I mean that I open a terminal inside the remote emacs and from there can open X programs. If phe is the local host and gly is the remote host and I do jrm@phe ~ % ssh -f gly 'emacsclient -nc' the remote emacs opens and all is good. However, from within that emacs X forward doesn't work. I get an error about the DISPLAY even though the environment is correct. A little investigation hints that the problem is with the magic cookie exchange. If I then open a local terminal and ssh to the remote host the X forwarding inside the already-open remote emacsclient starts working. I can also open a terminal ssh to the remote host then start an emacsclient. Both of these solutions require a separate terminal open to the remote host. Is there a way to get this working without the extra terminal sshed to the remote host? Joseph ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re: x forwarding? Fixed?
gene heskett wrote: In my experience, enabling debugging on the server side (via the LogLevel directive in sshd_config) tends to be more useful than the debug information produced by the client. In this case 'server' I assume being the machine I am targeting, aka 'lathe'? Yes; the machine running the sshd daemon. The ssh client can only tell you what the ssh server tells it, and it's in the nature of the secure shell protocol for the server not to tell the client too much. It may tell it if something failed, but probably not exactly how or why it failed. -- Glynn Clements gl...@gclements.plus.com ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re: x forwarding? Fixed?
On Friday, March 16, 2012 12:29:58 AM Glynn Clements did opine: gene heskett wrote: In my experience, enabling debugging on the server side (via the LogLevel directive in sshd_config) tends to be more useful than the debug information produced by the client. In this case 'server' I assume being the machine I am targeting, aka 'lathe'? Yes; the machine running the sshd daemon. I _think_ its running but I will add that debug level to the config file the next time I boot it. I need to get the motor controllers power supplies assembled next. This box will be running a cnc'd lathe when its all assembled. The ssh client can only tell you what the ssh server tells it, and it's in the nature of the secure shell protocol for the server not to tell the client too much. It may tell it if something failed, but probably not exactly how or why it failed. I can understand that reticence. I was out in the garage a bit ago, updated that machine then shut it off, intending to get some beauty sleep. Alas, I've fooled around and failed, not that it would do me much good with all the calendars I've thrown away. ;-) Thanks Glynn. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene Don't vote -- it only encourages them! ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
x forwarding?
Greetings all; 2 supposedly identical machines, installed from the same ubuntu-10.04 LTS cd that is a special version for LinuxCNC (which used to be emc). Machines are intel D525MW boards. ssh -Y first machine works, and uses Display:10:0, ssh -Y second machine doesn't, tries fails to use Display 0:0. Where what does it take to enable the 2nd one? (not normally at the same time) Thanks. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene If you fail to plan, plan to fail. ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re: x forwarding?
On Wed, 2012-03-14 at 03:27 -0400, gene heskett wrote: ssh -Y first machine works, and uses Display:10:0, ssh -Y second machine doesn't, tries fails to use Display 0:0. Where what does it take to enable the 2nd one? (not normally at the same time) Either: a) The shell you launched ssh from for the second machine didn't have $DISPLAY set, b) sshd_config for the second machine doesn't have X11Forwarding yes in it. - ajax signature.asc Description: This is a digitally signed message part ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re: x forwarding?
On Wednesday, March 14, 2012 11:11:14 AM Adam Jackson did opine: On Wed, 2012-03-14 at 03:27 -0400, gene heskett wrote: ssh -Y first machine works, and uses Display:10:0, ssh -Y second machine doesn't, tries fails to use Display 0:0. Where what does it take to enable the 2nd one? (not normally at the same time) Either: a) The shell you launched ssh from for the second machine didn't have $DISPLAY set, Same shell on this machine. login to shop works, to lathe doesn't. If its the login shell on the second machine, how do I set that? And why should it be different since the install cd was the exact same cd? I had to completely blacklist/disable ipv6 on the machine the XForward isn't working on. b) sshd_config for the second machine doesn't have X11Forwarding yes in it. Contains, apparently by default: X11Forwarding yes X11DisplayOffset 10 - ajax I was pointed at the xauth command to fix this, but that man page has to rank near the top for all time obtuseness, and when executed on the non- working machine, returns: gene@lathe:~$ pwd /home/gene gene@lathe:~$ xauth list xauth: creating new authority file /home/gene/.Xauthority gene@lathe:~$ cat .Xauthority cat: .Xauthority: No such file or directory for as many times as you want to hit the up-arrow return. Any better ideas? Thanks all. Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene Only a fool fights in a burning house. -- Kank the Klingon, Day of the Dove, stardate unknown ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re: x forwarding?
Am 14.03.2012 16:24, schrieb gene heskett: On Wednesday, March 14, 2012 11:11:14 AM Adam Jackson did opine: On Wed, 2012-03-14 at 03:27 -0400, gene heskett wrote: ssh -Y first machine works, and uses Display:10:0, ssh -Y second machine doesn't, tries fails to use Display 0:0. Where what does it take to enable the 2nd one? (not normally at the same time) Either: a) The shell you launched ssh from for the second machine didn't have $DISPLAY set, Same shell on this machine. login to shop works, to lathe doesn't. If its the login shell on the second machine, how do I set that? And why should it be different since the install cd was the exact same cd? I had to completely blacklist/disable ipv6 on the machine the XForward isn't working on. There is an issue with ipv6 an certain ssh configurations. I had this problem you can see some strange errors in /var/log/ b) sshd_config for the second machine doesn't have X11Forwarding yes in it. Contains, apparently by default: X11Forwarding yes X11DisplayOffset 10 - ajax I was pointed at the xauth command to fix this, but that man page has to rank near the top for all time obtuseness, and when executed on the non- working machine, returns: gene@lathe:~$ pwd /home/gene gene@lathe:~$ xauth list xauth: creating new authority file /home/gene/.Xauthority gene@lathe:~$ cat .Xauthority cat: .Xauthority: No such file or directory for as many times as you want to hit the up-arrow return. This is strange, when ssh starts it should create the files. i assume you did the ssh -v ? re, wh Any better ideas? Thanks all. Cheers, Gene ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re: x forwarding?
On Wednesday, March 14, 2012 11:41:22 AM walter harms did opine: Am 14.03.2012 16:24, schrieb gene heskett: On Wednesday, March 14, 2012 11:11:14 AM Adam Jackson did opine: On Wed, 2012-03-14 at 03:27 -0400, gene heskett wrote: ssh -Y first machine works, and uses Display:10:0, ssh -Y second machine doesn't, tries fails to use Display 0:0. Where what does it take to enable the 2nd one? (not normally at the same time) Either: a) The shell you launched ssh from for the second machine didn't have $DISPLAY set, Same shell on this machine. login to shop works, to lathe doesn't. If its the login shell on the second machine, how do I set that? And why should it be different since the install cd was the exact same cd? I had to completely blacklist/disable ipv6 on the machine the XForward isn't working on. There is an issue with ipv6 an certain ssh configurations. I had this problem you can see some strange errors in /var/log/ b) sshd_config for the second machine doesn't have X11Forwarding yes in it. Contains, apparently by default: X11Forwarding yes X11DisplayOffset 10 - ajax I was pointed at the xauth command to fix this, but that man page has to rank near the top for all time obtuseness, and when executed on the non- working machine, returns: gene@lathe:~$ pwd /home/gene gene@lathe:~$ xauth list xauth: creating new authority file /home/gene/.Xauthority gene@lathe:~$ cat .Xauthority cat: .Xauthority: No such file or directory for as many times as you want to hit the up-arrow return. This is strange, when ssh starts it should create the files. i assume you did the ssh -v ? Which gets noisy, but the last 2 lines are: debug1: Requesting X11 forwarding with authentication spoofing. X11 forwarding request failed on channel 0 Thanks. And I'll have to get back to this later, I am putting a new engine in my pickup too. re, wh Any better ideas? Thanks all. Cheers, Gene Cheers, Gene -- There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order. -Ed Howdershelt (Author) My web page: http://coyoteden.dyndns-free.com:85/gene Anything is possible on paper. -- Ron McAfee ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re: x forwarding?
On Wed, Mar 14, 2012 at 11:43:01AM -0400, gene heskett wrote: On Wednesday, March 14, 2012 11:41:22 AM walter harms did opine: [...] Which gets noisy, but the last 2 lines are: debug1: Requesting X11 forwarding with authentication spoofing. X11 forwarding request failed on channel 0 Check if you have the xauth(1) program installed on the remote host you're connecting to, and install it if it's not there yet. It missing has been the reason for X11 forwarding not to work for me (with similar symptoms as you are experiencing) in the past. ssh(1) tries to execute xauth on the remote side of the connection if X11 forwardinf is requested by the client, and will not explicitly state it has failed doing so. -- with best regards: - Johannes Truschnigg ( johan...@truschnigg.info ) www: http://johannes.truschnigg.info/ phone: +43 650 2 17 xmpp: johan...@truschnigg.info Please do not bother me with HTML-email or attachments. Thank you. signature.asc Description: Digital signature ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
Re: x forwarding?
On 03/14/12 08:24 AM, gene heskett wrote: I was pointed at the xauth command to fix this, but that man page has to rank near the top for all time obtuseness, and when executed on the non- working machine, returns: gene@lathe:~$ pwd /home/gene gene@lathe:~$ xauth list xauth: creating new authority file /home/gene/.Xauthority gene@lathe:~$ cat .Xauthority cat: .Xauthority: No such file or directory That's a misleading message, fixed a couple years ago in the xauth sources: http://cgit.freedesktop.org/xorg/app/xauth/commit/?id=1c701094169b6e33f7faf21a269e949bf134a326 and included in xauth-1.0.5 and later releases. Also note that a number of systems now no longer use $HOME/.Xauthority but instead set the XAUTHORITY environment variable in your session to a session specific file in /var for a variety of reasons, and if you're trying to access xauth cookies from outside that session you'll need to find the XAUTHORITY value in that session to match it. -- -Alan Coopersmith- alan.coopersm...@oracle.com Oracle Solaris Engineering - http://blogs.oracle.com/alanc ___ xorg@lists.x.org: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: arch...@mail-archive.com
