x2go-user

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Re: [X2Go-User] x2go Rocks! - just think of next steps...
by brian mullan 29 Mar '12

29 Mar '12

nigra... now that you have x2go working. Here is something else to add to the mix. you want a "cloud" desktop but it has to support linux & windows. in the cloud (I use aws's ec2) create a linux desktop server. (I use ubuntu) I create an ubuntu server instance on AWS's EC2 cloud by: - ssh into the instance - install a default ubuntu desktop (apt-get install ubuntu-desktop) - add the x2go ppa sudo add-apt-repository ppa:x2go/stable - refresh the repository cache (debian/ubuntu) sudo apt-get update - install x2go server sudo apt-get install x2goserver - add yourself to the x2gouser group sudo adduser <yourID> x2gouser after that ... you should be able to go back to your local machine and start your x2goclient and point it to your AWS EC2 cloud PUBLIC IP address and get to logged-in. BUT... what if you want Windows apps too.. On the "cloud" x2goserver think about setting up FreeRDP (http://www.freerdp.com/) In whatever "cloud" you use... start a Windows 2008 v2 server. - On that Windows server as Admin ... - install and setup whatever RemoteApp applications you want - and publish them <http://www.youtube.com/watch?v=Nf20-76dMcg>. (demo'd at UDS in Orlando http://www.youtube.com/watch?v=Qnh7f36xkRA and I've done it locally myself to aws servers) Back on your Linux/Ubuntu machine use FreeRDP to execute the Windows "RemoteApp" application. Big picture... - you are on a remote pc/laptop/tablet etc running an x2goclient - you connect to your "cloud" x2goserver machine and login - your login has a menu or some desktop icons that when clicked - uses FreeRDP to execute the Windows Apps off of the Windows "cloud" server as just another xwindow. - That uses the RDP protocal. But since its all "intra-cloud" between instances (the windows cloud instance and the linux/ubuntu cloud instance) - the I/O is very high bandwidth (on AWS it would be 1-10Gbps) links. - Now since you (the x2go client) are remotely connected to the "cloud" linux/ubuntu server and utilizing the great compression of x2go/nx - the remote windows & linux apps "appear" to have the same good performance. Lastly, because freerdp lets the windows apps appear as just "any other" linux app the end user only has one "look-and-feel" etc to deal with which can be a big issue in end-user training and acceptance with just a single desktop & user interface. Brian ---------- Forwarded message ---------- From: nigra truo <nigratruo(a)gmail.com> To: x2go-user(a)lists.berlios.de Cc: Date: Wed, 28 Mar 2012 18:44:25 -0700 Subject: [X2Go-User] X2go rocks! Hi, I just wanted to say thank you for the great thing that X2Go has become. I use it on a daily basis on several systems and could not think how I would work anymore without it. It provides a functionality that I have looked for so many years, but could never find. I always thought that a Linux server would be perfect to be used as a terminal server, but was always amazed and confused at the total lack of any application that provided this functionality. Then, Windows RDP came along and I did not understand how Linux with X and that network-ability of it failed to provide something similar. And finally, we got it! I hope that X2Go will find it's way into all Linux Distros. I wish there was a CentOS and RedHat package so I could load it onto each customers machine that I have to support, instead of having to use sucky VNC or putty or be limited to using a remote shell, instead of the rich GUI experience that KDE and Gnome can offer. In spreading the word, I wrote a blog about my great experience and what X2Go can do. http://browny-amiga.livejournal.com/7167.html Thanks again for all the hard work in making X2Go a reality, you guys rock! Markus

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Composite extension
by Ralph Sikau 29 Mar '12

29 Mar '12

Hi, we connect to a gnome session on a x2go host. This gnome session has cairo-dock installed which unfortunately cannot make use of the composite function included in metacity for real transparency. When I start xcompmgr it says "no composite extension". The x2go windows client uses vcxsrv which is supposed to be even opengl capable. Where is the handicap here? Best, Ralph

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x2go server & client on Ubuntu 12.04 beta fails
by brian mullan 29 Mar '12

29 Mar '12

I have not been able to get x2go server/client to work on Ubuntu 12.04 client/server machines. I installed the x2go ppa for ubuntu sudo add-apt-repository ppa:x2go/stable I installed on the server the x2goserver: sudo apt-get install x2goserver on the client I installed the x2goclient: sudo apt-get install x2goclient On ubuntu 12.04 I have installed the 'fallback' gnome desktop support but in previous versions both Unity or gnome worked. Now when attempting to start an x2go client session (see below): ssh connection gets established public/private keypair are generated search for proxy starts session aborts/terminates Anyone got any ideas what the problem might be or how I can troubleshoot further? Brian ============================================================== bmullan@myPC:~$ x2goclient ONMainWindow constructor Can't load translator (:/x2goclient_en_us) ! Can't load translator :/qt_en_US ONMainWindows constructor finished, home Directory is: "/home/bmullan" read 2 sessions from config file start new ssh connection to server: " ec2-107-20-19-100.compute-1.amazonaws.com" : "22" krb: false ssh connection ok continue normal x2go session "x2gostartagent 800x600 wan 16m-jpeg-9 unix-kde-depth_24 us pc105/us 1 D GNOME" Agent output: "54 3339c5586e14c274ad523e1eb356d10b 16688 bmullan-54-1333005451_stDGNOME_dp24 30001 30002 30003 " starting nxproxy with: "nxproxy -S nx/nx,options=/home/bmullan/.x2go/S-bmullan-54-1333005451_stDGNOME_dp24/options:54" " NXPROXY - Version 3.5.0 Copyright (C) 2001, 2010 NoMachine. See http://www.nomachine.com/ for more information. Info: Proxy running in client mode with pid '18508'. Session: Starting session at 'Thu Mar 29 03:17:35 2012'. Info: Connecting to remote host 'localhost:31001'. Info: Connection to remote proxy 'localhost:31001' established. " search proxy win: "X2GO-bmullan-54-1333005451_stDGNOME_dp24" "Info: Connection with remote proxy completed. Warning: Unrecognized session type 'unix-kde-depth_24'. Assuming agent session. " "Info: Using WAN link parameters 768/24/1/0. Info: Using cache parameters 4/4096KB/8192KB/8192KB. Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_24'. Info: Using ZLIB data compression 1/1/32. Info: Using ZLIB stream compression 1/1. Info: No suitable cache file found. Info: Forwarding X11 connections to display ':0'. " "Session: Session started at 'Thu Mar 29 03:17:36 2012'. " search proxy win: "X2GO-bmullan-54-1333005451_stDGNOME_dp24" "Info: Established X server connection. " Generating public/private rsa key pair. Your identification has been saved in /home/bmullan/.x2go/ssh/gen/key.T18497. Your public key has been saved in /home/bmullan/.x2go/ssh/gen/key.T18497.pub. The key fingerprint is: cc:23:10:15:e3:bd:3e:86:ee:7f:02:be:6f:d2:ef:a4 bmullan@DadsPC The key's randomart image is: +--[ RSA 1024]----+ | ..+. | | o o | | . . . | | . o . | | . S | | .+ . | | ..o+ . | | .o.++. | | .+*E=o | +-----------------+ key created on: "/home/bmullan/.x2go/ssh/gen/key.T18497" starting fs tunnel for: "bmullan-54-1333005451_stDGNOME_dp24" fs port: "30003" search proxy win: "X2GO-bmullan-54-1333005451_stDGNOME_dp24" exported key "/home/bmullan/.x2go/ssh/gen/key.T18497" key removed search proxy win: "X2GO-bmullan-54-1333005451_stDGNOME_dp24" "Info: Using shared memory parameters 1/2048K. " search proxy win: "X2GO-bmullan-54-1333005451_stDGNOME_dp24" search proxy win: "X2GO-bmullan-54-1333005451_stDGNOME_dp24" search proxy win: "X2GO-bmullan-54-1333005451_stDGNOME_dp24" search proxy win: "X2GO-bmullan-54-1333005451_stDGNOME_dp24" proxy win found: 73400416 "Session" ": Terminating session at 'Thu Mar 29 03:17:39 2012'. Session: Session terminated at 'Thu Mar 29 03:17:39 2012'. " deleting proxy nxproxy not running proxy deleted check command message close event ^C bmullan@myPC:~$

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X2go rocks!
by nigra truo 29 Mar '12

29 Mar '12

Hi, I just wanted to say thank you for the great thing that X2Go has become. I use it on a daily basis on several systems and could not think how I would work anymore without it. It provides a functionality that I have looked for so many years, but could never find. I always thought that a Linux server would be perfect to be used as a terminal server, but was always amazed and confused at the total lack of any application that provided this functionality. Then, Windows RDP came along and I did not understand how Linux with X and that network-ability of it failed to provide something similar. And finally, we got it! I hope that X2Go will find it's way into all Linux Distros. I wish there was a CentOS and RedHat package so I could load it onto each customers machine that I have to support, instead of having to use sucky VNC or putty or be limited to using a remote shell, instead of the rich GUI experience that KDE and Gnome can offer. In spreading the word, I wrote a blog about my great experience and what X2Go can do. http://browny-amiga.livejournal.com/7167.html Thanks again for all the hard work in making X2Go a reality, you guys rock! Markus

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bugtracker?
by nigra truo 28 Mar '12

28 Mar '12

Hi, I'm having some issues that I think are bugs and was just wondering if there is a bug tracker tracking all the bugs that are currently open. Having to search through all posts is a little arduous. Thanks, Markus

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Few questions with Windows client
by Scott Balmos 28 Mar '12

28 Mar '12

Hi all, I'm currently running the Windows build 3.99.1.0 client on my work laptop to access a KUbuntu 11.10 VM at home running server version 3.1.0.1. I have two questions that have me scratching my head... 1) With the Windows client, when my KDE session starts up, the default launcher at the bottom of the session's window is not displayed, as if the Windows client is reporting a taller session pixel height than it should be. As soon as I perform a session window resize (even dragging any window dimension out and back by one pixel) redraws the session into the proper window size. This behavior does not seem to happen on the Linux x2go client. 2) More interestingly, I have Pulseaudio set to SSH tunnel, for the random time where I want audio playing over from my VM. Depending on the phase of the moon, I will hear the first tenth of a second of the KDE startup music, then nothing. Same with a song played in Amarok. Looking into the audio settings, the remote Pulseaudio server seems to drop off the valid devices list. I imagine Pulseaudio has lost the connection with the remote server on the Windows client. I don't know if it's a tunneling issue or not. Obviously everything works perfectly fine if there are no firewalls involved (e.g. I have my laptop at home, accessing the home VM locally). Any ideas, or pointers on what to debug where to provide more info? Thanks! --Scott

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A couple odds and ends questions
by senrabdet＠aol.com 26 Mar '12

26 Mar '12

Hi All: A couple of odds and ends questions about which we're hoping to get some help/clarification: 1) Stored Session Data x2go seems to store a fair amount of session data on both the server and the client in the .x2go folder on both. While these are not large folders, is there a concern that they will mount up over time? Are they limited to a specific number of folders and don't grow beyond that? Is this a "not to worry" sort of thing? 2) Restart Client Session from the Server Is it possible to kill and/or restart a specific client session from the server, presumably from the admin account on the server (we understand that this can be done from the client side)? 3) Force Use of Passwords Is there a way in x2go to force use of log in passwords? We're not sure this is a good idea (or maybe one that has some pluses and some minuses), but can it be accomplished? The only way we've found so far is to encrypt the users /home directory, cancel when the connection fails, and then connect when presented with the x2go screen (usually shown after you log out) that allows us to enter a password. Thanks! Ted

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Setting Number of Allowed Connections Per User Account
by senrabdet＠aol.com 26 Mar '12

26 Mar '12

Hi All: We're hoping to set and enable the number of allowed connections/sessions by user and user group in x2go. E.g., we want to limit a user to one session/connection/display at a time: that means from client machine A, if the user A is connected, a connection to his/her account could not be established from client machine B or a second connection couldn't be established from client Machine A. User A, if s/he had second account on the server, however, could start one and only one connection to that second account while running one and only one session to the first account. We think we've seen some posts to this effect involving editing /etc/x2go/x2goserver.conf and /usr/bin/x2gosessionlimit (see http://comments.gmane.org/gmane.linux.terminal-server.x2go.devel/954) We've tried making some of the following types of edits: A) If we edit x2goserver.conf alone, and set either "UserA=1 and/or "UserGroupA=1", we can make multiple connections. When we start another instance of x2go, it shows there is a current session, and when we select "New" in the GUI, a second concurrent session begins. B) If we edit /usr/bin/x2gosessionlimit, and make the following changes and then do a "service x2goserver restart" (not sure if this restart is appropriate or necessary)... Add these lines: if($strlimit <= $scount) { print "LIMIT\n"; exit 0; } Comment out these lines: if($maxlimit <= $scount) { print "$maxlimit\n"; exit 0; } print "$maxlimit\n"; ....and change settings in x2goserver.conf, we got some inconstant results we haven't been able to duplicate, but were along the lines either of a "session limit being exceeded" message even if we had group and/or user limits set to 1 (i.e., we were unable to connect at all), or back to any number of sessions we wanted to start. Can someone suggest a procedure/example of how to do this successfully? Ideally, we'd like the flexibility to limit # of connections/sessions both by user group and individual user. Thanks, Ted

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Flash Problems
by senrabdet＠aol.com 26 Mar '12

26 Mar '12

Hi All: We're having trouble using Flash with x2go on an Ubuntu Server (10.4 - 64bit). What is puzzling is Flash used to work pretty well (still a bit of skipped frames but better than RDP) and we can't figure out why it no longer does. As a test, we built out a new server instance and got the same results. X2go connects just fine, and we can start firefox and surf, but as soon as we go to YouTube the videos start then pretty much freeze up and show a new frame very infrequently. I.e., pretty much unusable. We've seen a couple of posts on the x2go but have missed a solution (apologize if it's there and we just missed it). We've tried various install approaches (from the command line, from "Software Center") but none fix the issue. Any suggestions? Have others had this problem and come on to a solution? Should we try 32bit flash even though we are using a 64bit server instance? Thank you - Ted

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blurred image
by Michael Ferner 23 Mar '12

23 Mar '12

Hi, i use x2go-server 3.1.1.0 on Linux Mint 12 (gnome desktop). On the Client i have X2GoClient V. 3.99.2.0 on Linux Mint 12 (gnome desktop) und Windows 7. After i login i see this messages: NXPROXY - Version 3.5.0 Copyright (C) 2001, 2010 NoMachine. See http://www.nomachine.com/ for more information. Info: Proxy running in client mode with pid '3164'. Session: Starting session at 'Tue Mar 20 09:18:20 2012'. Info: Connecting to remote host 'localhost:31001'. Info: Connection to remote proxy 'localhost:31001' established. Info: Connection with remote proxy completed. Warning: Unrecognized session type 'unix-kde-depth_24'. Assuming agent session. Info: Using LAN link parameters 1536/24/1/0. Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_24'. Info: Not using NX delta compression. Info: Not using ZLIB data compression. Info: Not using ZLIB stream compression. Info: Not using a persistent cache. Info: Forwarding X11 connections to display ':0'. Session: Session started at 'Tue Mar 20 09:18:21 2012'. Info: Established X server connection. Info: Using shared memory parameters 1/2048K. But the font rendering is terrible. I've set the resolution to 150 dpi. It has not improved. What can I do? Greetings Michael -- Universität Ulm / University Ulm Germany Quanteninformationsverarbeitung / Dep. Quantum Information Processing Albert-Einstein-Allee 11 D-89069 Ulm tel. +49 / 731 / 50-22829 mobil +49 / 731 / 50-15166 fax +49 / 731 / 50-22839 michael.ferner(a)uni-ulm.de http://www.uni-ulm.de/nawi/nawi-qiv.html

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