x2go-user August 2012

x2go-user@lists.x2go.org

17 participants
24 discussions

Folder sharing does not work with x2goclient
by Emanuele Rocca 27 Nov '14

27 Nov '14

Hi list, While folder sharing works fine using pyhoca-cli, it does not work at all with x2goclient. This is what sshd says on the client side when trying to "share" a folder from the gui: May 8 13:55:43 uranus sshd[23908]: Connection from 127.0.0.1 port 51821 May 8 13:55:43 uranus sshd[23908]: Connection closed by 127.0.0.1 [preauth] mount's output on the server side does not show anything interesting. I am running Ubuntu precise (12.04), both on the client and the server. Do you have any hints on how to debug this further? Installed packages: ii cups-x2go 3.0.0.3-0~54~oneiric1 X2GO printer for CUPS ii python-x2go 0.1.1.9-0-0~612~oneiric1 Python module for X2go client support ii x2goagent 2:3.5.0.11-0~220~oneiric1 X2Go agent ii x2goclient 3.99.0.6-0~144~oneiric1 X2Go Client application (Qt4) ii x2gognomebindings 2.0.1.4-0~53~oneiric1 Description: x2gognomebindings (GNOME mimetypes for X2go) ii x2goserver 3.1.0.0-0~477~oneiric1 X2Go server daemon scripts ii x2goserver-compat 3.1.0.0-0~477~oneiric1 X2Go server daemon scripts (backwards compatitbity to old client versions) ii x2goserver-extensions 3.1.0.0-0~477~oneiric1 X2Go server daemon scripts (extensions) ii x2goserver-fmbindings 3.1.0.0-0~477~oneiric1 Generic (freedesktop-based) file manager bindings for X2Go ii x2goserver-printing 3.1.0.0-0~477~oneiric1 X2Go server daemon scripts (printing) ii x2goserver-pyhoca 3.1.0.0-0~477~oneiric1 X2Go server daemon scripts (add-ons for pyhoca client) ii x2goserver-xsession 3.1.0.0-0~477~oneiric1 X2Go server daemon scripts (Xsession runner) ii pyhoca-cli 0.1.4.2-0~108~oneiric1 A command line X2go client written in Python ii pyhoca-gui 0.1.0.10-0~487~oneiric1 A graphical X2go client written in (wx)Python ii x2goserver-pyhoca 3.1.0.0-0~477~oneiric1 X2Go server daemon scripts (add-ons for pyhoca client) Conf file: [20120503160857309] speed=3 pack=16m-jpeg quality=9 fstunnel=true export="/media:1;" iconvto=UTF-8 iconvfrom=ISO8859-1 useiconv=false fullscreen=false width=1024 multidisp=false display=1 height=768 dpi=96 setdpi=false xinerama=false usekbd=true layout=us type=pc105/us sound=true soundsystem=pulse startsoundsystem=true soundtunnel=true defsndport=true sndport=4713 print=true name=xxx icon=:icons/128x128/x2gosession.png host=host.example.org user=username key= sshport=22 autologin=false krblogin=false rootless=false applications=WWWBROWSER, MAILCLIENT, OFFICE, TERMINAL, gnome-session-fallback command=gnome-session-fallback rdpoptions= rdpserver= xdmcpserver=localhost

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Mac OSX and keyboard
by Paul van der Vlis 02 Sep '14

02 Sep '14

Hello, Is X2goclient working on Mac OSX? I read some messages that there are keyboard problems. Not sure they are gone. Here is such a message, with a link to another message: http://www.mail-archive.com/x2go-user@lists.berlios.de/msg00632.html When the problem is fixed, is this also the case for the Lenny version of X2go? (I have a customer with Macs who does not want to upgrade because the office will be closed in a few months.) With regards, Paul van der Vlis. -- Paul van der Vlis Linux systeembeheer, Groningen http://www.vandervlis.nl

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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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x2go without instalation
by Rui Cruz 26 Sep '12

26 Sep '12

Hi, Is there any workaround or anyone working on a Windows .zip file for usage without admin rights? thank you for your attention. -- Rui Cruz | Webmaster | +351 968271502 www.ruicruz.pt

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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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HOWTO - install ubuntu & x2goserver inside inside LXC containers
by brian mullan 29 Aug '12

29 Aug '12

The following is a description of how to install Ubuntu & x2go server inside Linux Containers (LXC). All of the following was done on an Ubuntu 12.04 server installed inside LXC containers. These examples are only for a single container but you can either Clone the first container you create and make necessary changes regarding IP addresses (they will be different for each LXC container) or start from scratch and create each manually. If you are not familiar with LXC containers it is a very lightweight & therefore very fast (faster than vmware, kvm, xen etc) technology built into most modern Linux kernels and distributions from Ubuntu, Debian, Fedora etc. Note that LXC does not support installing windows into an LXC container. LXC allows you to provide complete isolation of one container from another by default. However, you can as an admin provide more or less isolation between containers and also between containers and the HOST computer OS. I will NOT go into how LXC works here as there is a lot of information on the web which can help you understand more if you do a google search for "lxc containers" or read some of the "references" I've put at the end of this email. Ubuntu 12.04 has made LXC very easy to use. Canonical has simplified many things to the extreme. Other linux distributions may/will differ on how you create, access etc LXC containers. But lets begin creating our first LXC container and then we will install Bonitasoft inside that container. *STEP 1* Assuming you are using Ubuntu 12.04 Desktop we will install LXC first the create our first container which we will call x2goserver1-lxc. In the following we are going to use an “ubuntu” lxc template. There are other “lxc templates” for debian, fedora, centos etc that you could use if you wanted to install one of those OS inside an LXC Container even if the host is Ubuntu NOTE: you can install any Linux OS into an LXC container the only major rule is that the Linux must use the same Kernel as the Host linux. * sudo apt-get install lxc* Next create the LXC container we are calling x2goserver1-lxc then start up that container: * * * sudo lxc-create -t ubuntu -n x2goserver1-lxc* * sudo lxc-start -n x2goserver1-lxc* The “create” command above will create a new container called "x2goserver1-lxc" and install ubuntu ... using the same version of Ubuntu as your host computer so it will install ubuntu 12.04 inside the LXC container named "x2goserver1-lxc" This will take some time as it downloads all the required files from the Ubuntu repositories and installs them to create a bootable Ubuntu 12.04 system. The “start” command above will actually start the LXC container called "x2goserver1-lxc" and its Ubuntu system and leave you at a terminal command prompt inside the LXC container. *Note:* that the command prompt will be different from a terminal on your HOST computer as you will now be *inside* the container and because we haven't added any additional user accounts yet the login USERID will be the default which is "ubuntu". The command prompt should look something like the following: *ubuntu@x2goserver1-lxc:~$* Create a User Accounts for the users that will be using this container: *sudo adduser user-name1* * etc.* *STEP 2* While logged into the container and at the terminal prompt install whatever other tools you usually use. In my case, because I wanted to see if x2go would work so I installed the ubuntu desktop and the x2go server components. Install the Ubuntu Desktop: *sudo apt-get install ubuntu-desktop* when this completes reboot Ubuntu in the LXC container: *sudo shutdown -r now* this will reboot ubuntu in the container so the desktop environment will be available. Login again and continue. Next install the x2go "server" side applications so I can later access the container using the x2goclient on my HOST PC. Next add the x2go repository: * sudo add-apt-repository ppa:x2go/stable* * sudo apt-get update* Install the x2go "server" side components: * sudo apt-get install x2goserver sudo apt-get install x2goserver-session* On your HOST computer install the x2go client: * sudo add-apt-repository ppa:x2go/stable sudo apt-get update sudo apt-get install x2goclient* *STEP 3* This step is important if you want to be able to access the LXC container from the host using SSH or whatever other tools you use. The genesis of this step is from Stephane Graber who has taught me alot about LXC from his blog. This step is: 1. performed outside of your linux container and must be done for the USER that will be accessing the x2goserver1-lxc. 2. will require that you know the container IP address. Each LXC container will have a different IP address even though they are all running on the same PC 3. is necessary to allow someone on the HOST computer to access a container using the container's name with something like SSH etc. for example in our case "ssh userID-on-x2goserver1@x2goserver1-lxc" will log the user-of-bos1-name into the container and leave them at a terminal prompt *Add the following to each users ~/.ssh/config file. Note you may have to create ~/.ssh/config if it doesn't yet exist and change the lxc-container IP address to the container that each user is assigned to work with.** * note: each of the following should be a single line entry Host *.lxc StrictHostKeyChecking no UserKnownHostsFile /dev/null ProxyCommand nc $(host $(echo %h | sed "s/\\\\.lxc//g") * my-lxc-container-ip-address* | tail -1 | awk '{print $NF}') %p Host *.libvirt StrictHostKeyChecking no UserKnownHostsFile /dev/null ProxyCommand nc $(host $(echo %h | sed "s/\\\\.libvirt//g") * my-host-ip-address* | tail -1 | awk '{print $NF}') %p >From now on you can access the x2goserver1-lxc container using either SSH or the x2go client *STEP 4* If you want to use x2go start the x2goclient, then on the HOST create a new x2go "session" and add info about what LXC container IP address you want to connect to, what desktop (unity, gnome etc) and what speed is the connection (change this by moving the slider to LAN since we want the fastest/no compression) and then save. Start the x2goclient session and log into the LXC container. From now on you can do everything as if you were on your HOST PC. Just remember you will be inside the LXC container so you are separated from your host and changes made will only be to the LXC container's Ubuntu. *PARTING THOUGHTS* The reason for doing all of this? Well there are several I can think of but I’ll just name a couple: 1. Linux is now available on ARM. ARM cpu’s don’t support h/w virtualization solutions like vmware, kvm, xen etc. but since LXC does NOT require h/w virtualization you can use LXC containers to provide different and isolated compute environments even on ARM computers. 2. LXC is much faster than vmware, kvm, xen because there is no h/w virtualization and because its part of the linux kernel each container can have as much or as little direct access to the HOST PC resources as you want to configure (read up about LXC CGROUPS). 3. Whereas Vmware, kvm, xen etc all require at least one dedicated cpu “core” for each virtual machine you can only run so many VMs concurrently on a system.. LXC does not have this restriction so with LXC there are many people running as many as 50-80 LXC containers on a single server although your mileage may vary depending on what each container has installed, how much CPU, memory etc is available. 4. Maybe you’d like to have multiple customers each with an x2goserver but isolated from each other without resorting to the expense of separate servers for each customer? 5. Web Servers often don’t really need dedicated servers or even dedicated Virtual Machines. LXC Containers works great for that purpose. Remember I said that LXC containers can be as isolated from each other and from the HOST as you want. They start totally isolated but we changed that a bit above so you could ssh or x2go into a container by adding the 2 statements to a users ~/.ssh/config file However, you can allow LXC containers to share a HOST file system/directory, or even a something like an SQL server running on the HOST (again read about LXC CGROUPS). I may have forgotten a step or mistyped something here and if so send me a note and I'll double check and make any addition/correction. Have fun... *References:* http://lxc.teegra.net/ http://www.ibm.com/developerworks/linux/library/l-lxc-containers/ http://www.stgraber.org/category/lxc/ Brian Mullan

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X-Server cannot be started
by glpk xypron 25 Aug '12

25 Aug '12

Dear maintainer, when I try to start x2goclient on Windows I get an error message: X-Server lässt sich nicht starten. Bitte überprüfen Sie Ihre Installation. (X-server cannot be started, please, check your installation.) Reinstalling x2goclient did not solve the problem. Starting as administrator does not help either. Please, advice how find the root cause. Best regards Heinrich Schuchardt

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Issue with keyboard layout settings / altGr key
by bigot julien 24 Aug '12

24 Aug '12

Hello, I'm lookings for help for configuring the keyboard layout in X2go sessions. I'm not sure i'm on the good mailing-list for that, please excuse me if i'm not. I'm using X2goserver 3.1.1.3 on a debian machine, and i connect from windows with X2goClient 3.99.2.2, on a lxde desktop session. By default, i'm connected with a french keyboard layout, so it's good, apparently, but the AltGr Key does not work, nor does the "ctrl+alt" combo supposed to behave the same way. It means i can't type letters such as " #, {, |, @ " ... So i tried to switch to us layout keyboard ( not the best solution, but at least, will reduce the need for an AltGr key ) , but i didn't managed to. I tried several way i found on the faq, on the mailing list, etc.. 1) In the session preference, on the client : the parameter keyboard layout / model is ignored, i'm still in french. 2) using setxkbmap in a terminal during the session : it returns an error # setxkbmap us >No protocol specified > Cannot open display ":51.0" 3) Putting "auto" in keyboard type session preference, then from the session, editing ~/.x2go/<session>/keyboard , then call x2gosetkeyboard. The command return no error, but makes no change. Any help on how to get the AltGr key to function properly, or, by default, any help on how to switch to the us keyboard will be greatly appreciated. Thanks in advance, Julien.

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x2go installation: not tftp running
by ngainku chanceline 24 Aug '12

24 Aug '12

we try to install x2go but tftp is not running. the system use rlinetd but in the file /etc/rlinetd.conf no service is configured i use ubuntu 12.04 and install x2go as described in documentation before it was using /etc/inetd.conf is it the mistake and how to start tftp with rlinetd? i wonder is i am aloen with this problem michel

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Re: [X2Go-User] x2go connecting timout with TCE
by Florian Müller 22 Aug '12

22 Aug '12

Hi Mike, this is the configuration of the desktop client: GNU nano 2.2.6 Datei: .x2goclient/sessions [20120813130507857] speed=2 pack=16m-jpeg quality=9 fstunnel=true export= iconvto=UTF-8 iconvfrom=ISO8859-1 useiconv=false fullscreen=false width=800 multidisp=false display=1 height=600 dpi=96 setdpi=false xinerama=false usekbd=true layout=de type=pc105/de sound=true soundsystem=pulse startsoundsystem=true soundtunnel=true defsndport=true sndport=4713 print=true name=Login icon=:icons/128x128/x2gosession.png host=x2go-server user= key= sshport=22 autologin=false krblogin=false rootless=false applications=WWWBROWSER, MAILCLIENT, OFFICE, TERMINAL, "gnome-session --session=gnome-fallback" command="gnome-session --session=gnome-fallback" rdpoptions= rdpserver= xdmcpserver=localhost and this is the configuration of the TCE-Environment(quite the same, because i copied the one of the client like descripted in the x2go-wiki): [20120813130507857] speed=2 pack=16m-jpeg quality=9 fstunnel=true export= iconvto=UTF-8 iconvfrom=ISO8859-1 useiconv=false fullscreen=true width=800 multidisp=false display=1 height=600 dpi=96 setdpi=false xinerama=false usekbd=true layout=de type=pc105/de sound=true soundsystem=pulse startsoundsystem=true soundtunnel=true defsndport=true sndport=4713 print=true name=Login icon=:icons/128x128/x2gosession.png host=x2go-server user= key= sshport=22 autologin=false krblogin=false rootless=true applications=WWWBROWSER, MAILCLIENT, OFFICE, TERMINAL command="gnome-session --session=gnome-fallback" rdpoptions= rdpserver= xdmcpserver=localhost Best Regards Flo

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x2go-user August 2012