x2go-user April 2012

x2go-user@lists.x2go.org

20 participants
26 discussions

Re: [X2go-User] Mac client 'Can't connect to X-Server
by Neil Hunt 14 Nov '12

14 Nov '12

Paul, Unfortunately as a regular user of the Mac X2go client, this is something I've seen many times. Unfortunately, I haven't found any fix for it. The good news is that it rarely happens if you keep the X11 application open. Always open X11 before starting your X2go session. From there, you can stop/start X2go sessions, even the X2go client itself, however I almost always keep my X11 app running even when it's not being uses and then I don't get the problem you are describing. If I quit X11, especially if it's accidental during an active X2go session, then I end up with the problem you are describing and the only option is to restart the whole computer. But if I keep it open, I go for days or weeks without rebooting. Ultimately, I think we should look to move to the PyHoca gui, but we haven't been able to find any serious python developers to port it to OS X. Neil -------------------------------------------------------------------------------------------- Date: Wed, 6 Jul 2011 12:14:51 -0700 From: Paul Northug <pnorthug(a)gmail.com> To: x2go-user(a)lists.berlios.de Subject: [X2go-User] Mac client 'Can't connect to X-Server' Message-ID: <CAJAeRZy=KmQsVyoELQ4MrTDHZ8g03x8tXJm_hTL5NK50jQ9QEw(a)mail.gmail.com> Content-Type: text/plain; charset=ISO-8859-1 Thank you to the developers for make this excellent software. Many people at my work use x2go's Mac client. We have never been able to figure out how to resolve the 'Can't connect to X-Server' error without random acts (eg. rebooting). We are not sure why it comes up. This is what I do: 1. Start X11.app 2. ssh -X remotehost 3. xterm & So far this works, I get an xterm so there is nothing wrong with X11 4. Start X2Go client 5. Start a session (port 22, dsa authentication, Gnome...) 6. Client gives the error and hangs (Abort and Terminate don't do anything) and I have to close the application. The closest we got to figuring it out is that the X11.app possibly changes it's DISPLAY on restarts and perhaps the x2go client is expecting display 0. Is there any more debugging information that I could get from the client to see what exactly it is doing prior to giving the error message? We have tried some of the suggestions in the forums, such as changing permissions in X11.app (this is necessary), starting it manually before starting the client. We have also done things like messed with firewall settings, made sure hostname doesn't change on our laptops between work and home, deleted preference files, delete XAuthority files, etc. What seems to work is rebooting. Thanks, P?l

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xming 6.9.0.31 keeps crashing
by nigra truo 21 Sep '12

21 Sep '12

Hi, I use x2go a lot on Windows, but have noticed that the xming server keeps crashing from time to time, usually when I seem to have firefox open in the session with lots of tabs. It takes me usually some effort to close the tabs, as it keeps crashing and crashing. Is there a workaround for this? This is with X2go client 3.01-2 on Windows. I know this is an old version of X2go, but when trying the new version, they both fail on Linux and Windows with the error "cannot open X screen" or something. (do I have to upgrade the x2go server too, might that be the problem to be able to use the new client? I depend on x2go and use it long hours every day so breakage is annoying) Thanks, Markus

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Re: [X2Go-User] ubuntu 12.04 and x2go server installation - found reason for failed remote desktop session starts
by brian mullan 02 May '12

02 May '12

I should have also mentioned that my x2go client & x2go server are both 64 bit. Not sure if that makes a difference but it may. ---------- Forwarded message ---------- From: brian mullan <bmullan.mail(a)gmail.com> Date: Sun, Apr 29, 2012 at 10:55 AM Subject: Re: X2Go-User Digest, Vol 20, Issue 20 To: x2go-user(a)lists.berlios.de Mike I never tried pyhoca just the regular x2go client but I will check if there is a difference between the two. But I do know that changing that sshd_config entry back to no causes x2go session to fail and changing it to yes .. works. I'll try pyhoca first before deleting the wiki entry. > ---------- Forwarded message ---------- > From: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> > To: x2go-user(a)lists.berlios.de > Cc: > Date: Sun, 29 Apr 2012 00:35:30 +0200 > Subject: Re: [X2Go-User] ubuntu 12.04 and x2go server installation - found > reason for failed remote desktop session starts > Hi Brian, > > On Mi 25 Apr 2012 00:01:16 CEST brian mullan wrote: > > then edit /etc/ssh/sshd_config and enable ChallengeResponseAuthenticatio* >> *n >> to YES >> >> ***ChallengeResponseAuthenticatio**n yes* >> > > I cannot confirm that this setting change in sshd_config is necessary. I > just tested Ubuntu precise with X2Go and server logins were successful with > x2goclient and pyhoca-gui without the above change being applied. > > Please check your setup again and remove the part in the wiki that > suggests the above named change. Or explain in more detail why you think > this is necessary. Let's track this down fully, so we get a clearer sight > on what is happening here. > > On the server you now also must install x2goserver-xsession >> * >> sudo apt-get install x2goserver-xsession* >> > > Thanks for reporting this. This indeed may have been a bug in > x2goruncommand. My patch is currently being discussed on the x2go-dev ML: > http://code.x2go.org/gitweb?p=**x2goserver.git;a=commitdiff;h=** > c13ffe1cb2c39edfacab52bc62e278**469da19c9e<http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=c13ffe1cb2c39ed…> > > With the given patch applied, the x2goserver-xsession package becomes > optional again. Packages for testing will be available in the > nightly-builds soon. > > So basically, I think, we should remove this part from the wiki again, as > well. But before doing that, we have to wait for acceptance of my patch by > the other developers. > > Greets, > Mike > > > -- > > DAS-NETZWERKTEAM > mike gabriel, dorfstr. 27, 24245 barmissen > fon: +49 (4302) 281418, fax: +49 (4302) 281419 > > GnuPG Key ID 0xB588399B > mail: mike.gabriel(a)das-netzwerkteam.**de<mike.gabriel(a)das-netzwerkteam.de>, > http://das-netzwerkteam.de > > freeBusy: > https://mail.das-netzwerkteam.**de/freebusy/m.gabriel%40das-** > netzwerkteam.de.xfb<https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x…> > > _______________________________________________ > X2Go-User mailing list > X2Go-User(a)lists.berlios.de > https://lists.berlios.de/mailman/listinfo/x2go-user >

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Re: [X2Go-User] ubuntu 12.04 and x2go server installation - found reason for failed remote desktop session starts
by brian mullan 29 Apr '12

29 Apr '12

I just installed pyhoca-gui on my local pc running ubuntu 12.04 using the ubuntu repositories and synaptic. pyhoca-gui fails to start and displays: * * *$ pyhoca-gui Xlib.protocol.request.QueryExtension pyhoca-gui[21497] (PyHoca-GUI) WARN: the current release of PyHoca-GUI does not support client configuration* So I'm not able to try it and I'm not sure what the problem is with "client configuration"? I'll delete the wiki entry if you are sure the sshd_config entry isn't a problem but I'm not so sure. As I've said changing it to "no" and x2goclient fails, change to "yes" and it works? I can always just use this as my personal "fix" until some other reason for the failures appears. Brian ---------- Forwarded message ---------- > From: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> > To: x2go-user(a)lists.berlios.de > Cc: > Date: Sun, 29 Apr 2012 00:35:30 +0200 > Subject: Re: [X2Go-User] ubuntu 12.04 and x2go server installation - found > reason for failed remote desktop session starts > Hi Brian, > > On Mi 25 Apr 2012 00:01:16 CEST brian mullan wrote: > > then edit /etc/ssh/sshd_config and enable ChallengeResponseAuthenticatio* >> *n >> to YES >> >> ***ChallengeResponseAuthenticatio**n yes* >> > > I cannot confirm that this setting change in sshd_config is necessary. I > just tested Ubuntu precise with X2Go and server logins were successful with > x2goclient and pyhoca-gui without the above change being applied. > > Please check your setup again and remove the part in the wiki that > suggests the above named change. Or explain in more detail why you think > this is necessary. Let's track this down fully, so we get a clearer sight > on what is happening here. > > On the server you now also must install x2goserver-xsession >> * >> sudo apt-get install x2goserver-xsession* >> > > Thanks for reporting this. This indeed may have been a bug in > x2goruncommand. My patch is currently being discussed on the x2go-dev ML: > http://code.x2go.org/gitweb?p=**x2goserver.git;a=commitdiff;h=** > c13ffe1cb2c39edfacab52bc62e278**469da19c9e<http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=c13ffe1cb2c39ed…> > > With the given patch applied, the x2goserver-xsession package becomes > optional again. Packages for testing will be available in the > nightly-builds soon. > > So basically, I think, we should remove this part from the wiki again, as > well. But before doing that, we have to wait for acceptance of my patch by > the other developers. > > Greets, > Mike > > > -- > > DAS-NETZWERKTEAM > mike gabriel, dorfstr. 27, 24245 barmissen > fon: +49 (4302) 281418, fax: +49 (4302) 281419 > > GnuPG Key ID 0xB588399B > mail: mike.gabriel(a)das-netzwerkteam.**de<mike.gabriel(a)das-netzwerkteam.de>, > http://das-netzwerkteam.de > > freeBusy: > https://mail.das-netzwerkteam.**de/freebusy/m.gabriel%40das-** > netzwerkteam.de.xfb<https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x…> > > _______________________________________________ > X2Go-User mailing list > X2Go-User(a)lists.berlios.de > https://lists.berlios.de/mailman/listinfo/x2go-user >

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Re: [X2Go-User] X2Go-User Digest, Vol 20, Issue 20
by brian mullan 29 Apr '12

29 Apr '12

Mike I never tried pyhoca just the regular x2go client but I will check if there is a difference between the two. But I do know that changing that sshd_config entry back to no causes x2go session to fail and changing it to yes .. works. I'll try pyhoca first before deleting the wiki entry. > ---------- Forwarded message ---------- > From: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> > To: x2go-user(a)lists.berlios.de > Cc: > Date: Sun, 29 Apr 2012 00:35:30 +0200 > Subject: Re: [X2Go-User] ubuntu 12.04 and x2go server installation - found > reason for failed remote desktop session starts > Hi Brian, > > On Mi 25 Apr 2012 00:01:16 CEST brian mullan wrote: > > then edit /etc/ssh/sshd_config and enable ChallengeResponseAuthenticatio* >> *n >> to YES >> >> ***ChallengeResponseAuthenticatio**n yes* >> > > I cannot confirm that this setting change in sshd_config is necessary. I > just tested Ubuntu precise with X2Go and server logins were successful with > x2goclient and pyhoca-gui without the above change being applied. > > Please check your setup again and remove the part in the wiki that > suggests the above named change. Or explain in more detail why you think > this is necessary. Let's track this down fully, so we get a clearer sight > on what is happening here. > > On the server you now also must install x2goserver-xsession >> * >> sudo apt-get install x2goserver-xsession* >> > > Thanks for reporting this. This indeed may have been a bug in > x2goruncommand. My patch is currently being discussed on the x2go-dev ML: > http://code.x2go.org/gitweb?p=**x2goserver.git;a=commitdiff;h=** > c13ffe1cb2c39edfacab52bc62e278**469da19c9e<http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=c13ffe1cb2c39ed…> > > With the given patch applied, the x2goserver-xsession package becomes > optional again. Packages for testing will be available in the > nightly-builds soon. > > So basically, I think, we should remove this part from the wiki again, as > well. But before doing that, we have to wait for acceptance of my patch by > the other developers. > > Greets, > Mike > > > -- > > DAS-NETZWERKTEAM > mike gabriel, dorfstr. 27, 24245 barmissen > fon: +49 (4302) 281418, fax: +49 (4302) 281419 > > GnuPG Key ID 0xB588399B > mail: mike.gabriel(a)das-netzwerkteam.**de<mike.gabriel(a)das-netzwerkteam.de>, > http://das-netzwerkteam.de > > freeBusy: > https://mail.das-netzwerkteam.**de/freebusy/m.gabriel%40das-** > netzwerkteam.de.xfb<https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x…> > > _______________________________________________ > X2Go-User mailing list > X2Go-User(a)lists.berlios.de > https://lists.berlios.de/mailman/listinfo/x2go-user >

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ubuntu 12.04 and x2go server installation - found reason for failed remote desktop session starts
by brian mullan 28 Apr '12

28 Apr '12

I recently had reported installing x2goserver on a totally new server machine and the x2goclient on a totally new client machine both running Ubuntu 12.04 beta 2 and the fact that when trying to start an x2go session it would always indicate "running" then immediately fail/terminate. I've found out the following. After adding the x2go PPA for debian/ubuntu *sudo add-apt-repository ppa:x2go/stable sudo apt-get update* In the past all I've had to do on the server was install x2goserver *sudo apt-get install x2goserver* then edit /etc/ssh/sshd_config and enable ChallengeResponseAuthentication to YES *ChallengeResponseAuthentication yes* However, with the new x2go versions apparently that is NOT they only module that needs to be installed. On the server you now also must install x2goserver-xsession * sudo apt-get install x2goserver-xsession* My best guess is that this was introduced when the new x2go versions implemented the ability to *published apps* on the x2go server without having to install any sort of desktop environment on the remote "server" machine. After installing the x2goserver-xsession the x2goclient now successfully creates a remote desktop session with one caveate... I've had to setup the remote server for ssh automatic login If using Ubuntu refer to: https://help.ubuntu.com/community/SSH/OpenSSH/Keys If I do not do this then the login to the remote server will always fail due to some ssh failure but I am not sure if its the client or server side that fails but that is another problem to figure out later. At least I can get a remote desktop now. I'm not sure if the above change was documented anywhere on the x2go wiki but I will check and add it if it doesn't exist yet. Brian

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Re: [X2Go-User] [X2Go-Dev] x2go in Chroot
by John A. Sullivan III 26 Apr '12

26 Apr '12

On Thu, 2012-04-26 at 15:31 -0400, senrabdet(a)aol.com wrote: > Hi All: > > We've seen some posts about trying to use x2go to connect into a > chroot environment (e.g., > http://comments.gmane.org/gmane.linux.terminal-server.x2go.user/516) > but could not determine if anyone had successfully found a way to make > this work. > > Our understanding is we can set up an entire Ubuntu Desktop > environment inside of chroot. > > Could we also install x2go server inside of this environment and > connect via x2go? > > If anyone has a procedure for doing this, please share? Thanks and > best, <snip> We run them inside of VServer which is sort of a glorified chroot. I have not had time to post the process on the wiki and won't for quite a while. However, I may have posted the procedure previously to the list. Perhaps if you search for X2Go and vserver. If nothing shows up, I'll see what I can dig out - John

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sed error on server
by Jon Schewe 26 Apr '12

26 Apr '12

When I try and connect to my server I get the following in a dialog on my client: Connection failed sed: -e expression #1, char 4: unterminated `s' command head: cannot open `/nfshomes/jschewe/.x2go/C-jschewe-55-1334857726_stDGNOME_dp32/cmdoutput' for reading: No such file or directory cat: /nfshomes/jschewe/.x2go/C-jschewe-55-1334857726_stDGNOME_dp32/cmdoutput: No such file or directory This is what is in the .x2go/C-jschewe-55-... directory: ./options ./session.log ./C-jschewe-55-1334857726_stDGNOME_dp32 ./C-jschewe-55-1334857726_stDGNOME_dp32/stats ./cache-unix-kde-depth_32 The session log is attached. It looks like the options file should be options:55 instead of options. I've tried this on two different systems using the OpenSUSE RPMS, both 11.4 and 12.1 http://download.opensuse.org/repositories/X11:/RemoteDesktop:/x2go/openSUSE… http://download.opensuse.org/repositories/X11:/RemoteDesktop:/x2go/openSUSE… Any suggestions? -- Jon Schewe | http://mtu.net/~jpschewe

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x2go wiki updated for 2 topics (sshd_config change in debian/ubuntu) and x2goserver-xsession
by brian mullan 26 Apr '12

26 Apr '12

Mike Already did that yesterday.. pls chk my wiki updates to see if they make sense though as I'd also added info concerning the need to now also install x2goserver-xsession if you want to use the remote server as a remote desktop which was a change from the past where all I had to do was install x2goserver package and everything "just worked". Brian ---------- Forwarded message ---------- From: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> To: x2go-user(a)lists.berlios.de Cc: Date: Wed, 25 Apr 2012 21:19:39 +0200 Subject: Re: [X2Go-User] ubuntu/debian - found reason for login failures that display error msg: "Access denied. Authentication that can continue: publickey, keyboard-interactive" Hi Brian, thanks for digging this out. Most of us devs are not using Ubuntu as server OS and if we do, it is still an Ubuntu lucid. So, please... could you put this into the X2Go wiki? Thanks, Mike

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(TCE) Problem open display
by Torsten Bade 26 Apr '12

26 Apr '12

Hi all, I have actually the problem to connect via TCE to the server (fresh install), when I use the normal Client under e.g. Ubuntu, there is no problem, I can connect, work etc. The problem itself is only with TCE and I'm running in circles. System Ubuntu 10.04 amd64, Gnome x2goserver/xsession: 3.1.0.1 x2gognomebindings: 2.0.1.3 Client boot up via pxe, everything perfect ... but then, when I try to connect: I get the popup Message : Connection failed head: cannot open /home/<username>/.x2go/C-XXXXXXXXXXX_stDGNOME-dp32/cmdoutput' for reading: No such file or directory sed: -e expression #1, char 4: unterminated 's' command. When I say 'Show details' I get: --->> SNIPP Show details <<--- Proxy running in client mode with pid xxx Session: Starting session at xxx Info: Connecting to remote host 'localhost:31252'. (Here I was confused about localhost) Connection timeout, abortingInfo: Aborting the procedure due to signal '15'. --->> SNAPP Show details <<--- --->> SNIPP User Session.log <<--- running as X2Go Agent NXAGENT - Version 3.5.0 Copyright (C) 2001, 2011 NoMachine. See http://www.nomachine.com/ for more information. Info: Agent running with pid '8932'. Session: Starting session at 'Fri Mar 16 18:28:17 2012'. Info: Proxy running in server mode with pid '8932'. Info: Waiting for connection from 'localhost' on port '30126'. Info: Aborting the procedure due to signal '1'. Error: Aborting session with 'Unable to open display 'nx/nx,options=/ofs/logon/torba/.x2go/C-torba-50-1331918896_stDGNOME_dp24/options:50''. Session: Aborting session at 'Fri Mar 16 18:28:50 2012'. Session: Session aborted at 'Fri Mar 16 18:28:50 2012'. --->> SNAPP <<--- I was so confused, that I added now the line: allowed_users=anybody into /etc/X11/Xwrapper.config ... but nothing I can connect via ssh -X to the server and get for e.g. libreoffice displayed on my local machine. I tried different users ... nope ...same. Hopefully somebody have a hint :) Thanks in advance Torsten

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x2go-user April 2012