- x2go-user - X2Go ListServ

Running Blender 3d in X2go
by Nigra Truo 27 Mar '14

27 Mar '14

Hi, Blender worked in X2go before. But now I installed the ATI Graphics card drivers and now the program crashes with the following error: X Error of failed request: GLXBadRenderRequest Major opcode of failed request: 147 (GLX) Minor opcode of failed request: 1 (X_GLXRender) Serial number of failed request: 153 Current serial number in output stream: 178 Segmentation fault Of course I don't want to have to run Blender on the screen attached to the graphics card, as this is a headless server. Why does the installation of the GPU driver interfere with X2go? Is the GLX being used of the GPU instead of the X2go virtual display? Thanks, Markus

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IceWM Systray
by Marcus Moeller 26 Mar '14

26 Mar '14

Hi all. I am trying to set up an IceWM x2go session. In general it works, but the systray does not work within the x2go session. It works fine on a local login, btw. Greets Marcus

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Problem with Autologin through SSH Tunnel
by Mathias Ewald 24 Mar '14

24 Mar '14

Hi, I am seeing a problems with a new set up environment using the broker with SSH tunneling and session autologin. I start x2goclient connecting to my broker, log in, receive a list of session profiles, select the one that uses auto login, enter my SSH proxy password and get asked to enter a password for some key. Authentication to the broker is no problem: -- 2014-03-24 13:49:12,972 - broker - INFO - X2Go Session Broker (0.0.3.0), 2014-03-24 13:49:12,973 - broker - INFO - written by Mike Gabriel (X2Go Project) <mike.gabriel(a)das-netzwerkteam.de> 2014-03-24 13:49:12,973 - broker - INFO - Setting up the broker's environment... 2014-03-24 13:49:12,974 - broker - INFO - X2GOBROKER_DEBUG: True 2014-03-24 13:49:12,974 - broker - INFO - X2GOBROKER_CONFIG: /etc/x2go/x2gobroker.conf 2014-03-24 13:49:12,974 - broker - INFO - X2GOBROKER_AGENT_CMD: /usr/lib/x2go/x2gobroker-agent 2014-03-24 13:49:12,974 - broker - INFO - X2GOBROKER_AUTHSERVICE_SOCKET: /run/x2gobroker/x2gobroker-authservice.socket 2014-03-24 13:49:12,975 - broker - INFO - X2GOBROKER_DEFAULT_BACKEND: inifile 2014-03-24 13:49:12,975 - broker - INFO - X2GOBROKER_SSL_CERTFILE: 2014-03-24 13:49:12,975 - broker - INFO - X2GOBROKER_SSL_KEYFILE: 2014-03-24 13:49:12,981 - broker - INFO - client address is 127.0.0.1 2014-03-24 13:49:12,981 - broker - DEBUG - username: mathias, password: XXXXX, task: selectsession, profile_id: termsrv, cookie: 2014-03-24 13:49:12,982 - broker - DEBUG - base_broker.X2GoBroker.get_authentication_mechanism(): found default-auth-mech in global config section: pam 2014-03-24 13:49:12,982 - broker - DEBUG - base_broker.X2GoBroker._do_authenticate(): authenticating user=mathias with password=<hidden> against backend=inifile. 2014-03-24 13:49:12,982 - broker - DEBUG - connecting to authentication service socket /run/x2gobroker/x2gobroker-authservice.socket 2014-03-24 13:49:12,983 - broker - DEBUG - sending username=mathias, password=<hidden>, service=x2gobroker to authentication service 2014-03-24 13:49:12,999 - broker - INFO - authentication against PAM service »x2gobroker« succeeded for user »mathias« 2014-03-24 13:49:12,999 - broker - DEBUG - base_broker.X2GoBroker.check_access(): result of authentication check is: True 2014-03-24 13:49:13,006 - broker - DEBUG - base_broker.X2GoBroker.get_agent_query_mode(): found default-agent-query-mode in global config section: none -- After entering the SSH Proxy password auth.log says -- Mar 24 13:52:43 access sshd[24551]: Accepted password for x2gosshproxy from 80.187.108.145 port 8948 ssh2 Mar 24 13:52:43 access sshd[24551]: pam_unix(sshd:session): session opened for user x2gosshproxy by (uid=0) -- so that worked, too! On the x2goserver, I see this in auth.log right after I entered the proxy password: -- Mar 24 17:49:31 termsrv sshd[10065]: Did not receive identification string from 10.173.20.3 Mar 24 17:49:31 termsrv sshd[10067]: Did not receive identification string from 10.173.20.3 -- 10.173.20.3 is the inner IP address of my ssh proxy and x2go broker. I think this is where the problem lies. I assume at this point x2gobroker should connect to x2goserver using the x2gobroker account and the installed public key. Manually, I can create this connection from the broker though: -- root@access:~# su - x2gobroker x2gobroker@access:~$ ssh 10.173.20.2 Welcome to Ubuntu 13.10 (GNU/Linux 3.11.0-12-generic x86_64) * Documentation: https://help.ubuntu.com/ Last login: Mon Mar 24 17:17:29 2014 from 10.173.20.3 x2gobroker@termsrv:~$ -- Anybody with good troubleshooting skills? :D cheers Mathias

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RHEL 7 beta
by Les Mikesell 20 Mar '14

20 Mar '14

Are there any tricks to getting an x2go session to work with the x2goserver package from EPEL for the RHEL 7 beta distribution? My first attempts asking for a gnome session from a windows client connect, open a window, but then display an 'Oh no! Something has gone wrong' error message instead of drawing the desktop. Is this because everything is beta and not quite working yet or am I doing something wrong? -- Les Mikesell lesmikesell(a)gmail.com

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what is "bernd.lentes@127.0.0.1:/cygdrive/D/DOCUME~1/BERNDL~1.000/X2GO~1/S-67AA~1/spool on /tmp/.x2go-root/spool/C-root-52-1395158341_stDKDE_dp32 type fuse.sshfs" ?
by Lentes, Bernd 18 Mar '14

18 Mar '14

Hi, when i connect using X2go from a windows host to a linux host, on the linux host the following mountpoint appears: bernd.lentes@127.0.0.1:/cygdrive/D/DOCUME~1/BERNDL~1.000/X2GO~1/S-67AA~1/spool on /tmp/.x2go-root/spool/C-root-52-1395158341_stDKDE_dp32 type fuse.sshfs (rw,nosuid,nodev,default_permissions) Can anyone explain me why x2go uses a mountpoint to connect to a remote host ? Another mystery for me is why can't i access the folder /tmp/.x2go-root/spool/C-root-52-1395158341_stDKDE_dp32. And i don't find the folder /tmp/.x2go-root/spool/C-root-52-1395158341_stDKDE_dp32 on my windows systems. Using df on the linux host hangs without giving results. Terminating the connection df runs fine. Can anyone put a bit light on it for me ? Thanks in advance. Bernd -- Bernd Lentes Systemadministration Institut für Entwicklungsgenetik Gebäude 35.34 - Raum 208 HelmholtzZentrum münchen bernd.lentes(a)helmholtz-muenchen.de phone: +49 89 3187 1241 fax: +49 89 3187 2294 http://www.helmholtz-muenchen.de/idg Die Freiheit wird nicht durch weniger Freiheit verteidigt Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH) Ingolstädter Landstr. 1 85764 Neuherberg www.helmholtz-muenchen.de Aufsichtsratsvorsitzende: MinDir´in Bärbel Brumme-Bothe Geschäftsführer: Prof. Dr. Günther Wess, Dr. Nikolaus Blum, Dr. Alfons Enhsen Registergericht: Amtsgericht München HRB 6466 USt-IdNr: DE 129521671

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having problems in installing X2Go Server on SLES 11 SP3
by Lentes, Bernd 18 Mar '14

18 Mar '14

Hi, i'd like to install X2Go on a SLES 11 SP3 host, 64bit. I have installed the rpm for the server sucessfully, it has been version 4.0.1.8-2.5. There was a dependency which i resolved: Installing: perl-DBD-SQLite-1.40-30.1 [done]. When i try to connect from the Windows client, i get this error: http://www.directupload.net/file/d/3565/zdwseya3_jpg.htm Following https://bugs.mageia.org/show_bug.cgi?id=6729 , i did "x2godbadmin --createdb". The next error appeared: install_driver(SQLite) failed: "Unable to get DBI state function. DBI not loaded. at /usr/lib/perl5/5.10.0/x86_64-linux-thread-multi/DynaLoader.pm line 226. Compilation failed in require at (eval 6) line 3. at /usr/sbin/x2godbadmin line 92" Can anyone help me in installing the X2go Server ? Until now, i've been very happy in using X2go, the connections are more stable than the ones from nomachine origin. Thanks in advance. Bernd -- Bernd Lentes Systemadministration Institut für Entwicklungsgenetik Gebäude 35.34 - Raum 208 HelmholtzZentrum münchen bernd.lentes(a)helmholtz-muenchen.de phone: +49 89 3187 1241 fax: +49 89 3187 2294 http://www.helmholtz-muenchen.de/idg Die Freiheit wird nicht durch weniger Freiheit verteidigt Helmholtz Zentrum München Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH) Ingolstädter Landstr. 1 85764 Neuherberg www.helmholtz-muenchen.de Aufsichtsratsvorsitzende: MinDir´in Bärbel Brumme-Bothe Geschäftsführer: Prof. Dr. Günther Wess, Dr. Nikolaus Blum, Dr. Alfons Enhsen Registergericht: Amtsgericht München HRB 6466 USt-IdNr: DE 129521671

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Multi display - only for thin clients?
by Tobias Luther | X2Go-Community.org 17 Mar '14

17 Mar '14

Hello everybody, there is the question how to use multi display for X2Go. The client does have the Xinerama option, but reading the wiki http://wiki.x2go.org/doku.php/doc:usage:multi-display I understand this is for thin clients only? Also, man x2goclient does not mention this at all. I have got only one monitor at my setup, therefore I am not able to test this myself. Thanks a lot, tobias

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x2go vs synergy vs NX vs vnc, etc. (keyboard grab)
by Les Mikesell 17 Mar '14

17 Mar '14

I run synergy (http://synergy-foss.org/) to share my desktop keyboard/mouse with a laptop sitting to the side, and run an assortment of remote-access tools (x2go, NX, vmware client, vnc, etc.) that also grab the mouse/keyboard/clipboard. Sometimes it seems like x2go is conflicting with synergy but it is not very consistent - and sometimes anything that keeps the network very busy will make synergy unresponsive. Is there any way to tell what is really going on? -- Les Mikesell lesmikesell(a)gmail.com

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Win32 X2Go Client: Please Test nightly 4.0.2.0 build with PulseAudio 5.0
by Michael DePaulo 16 Mar '14

16 Mar '14

http://code.x2go.org/releases/binary-win32/x2goclient/heuler/mingw32-4.4/qt… Notes: 1. I am not submitting the attached patch for inclusion via this mailing list. I already have commit/push access. I will commit & push it once it is tested enough. It will be the commit for bug 422. 2. "--console" is enabled for x2goclient.exe, that's why you see a terminal open up when you launch X2Go Client. When 4.0.2.0 is released, this will be disabled. 3. If 4.0.2.0 were to be released tomorrow with this patch, the installer will be more like 24.8 MB, not 30.7 MB. This installer is larger because I included the pulseaudio source code, and because I included lots of unneeded pulseaudio modules (.DLL files.) 4. For more info about the PulseAudio 5.0 bulid (OBS rev18): http://comments.gmane.org/gmane.comp.audio.pulseaudio.general/19865

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Buggy File & Folder sharing
by Thierry Kauffmann 14 Mar '14

14 Mar '14

Hi, File & Folder sharing seems to be buggy : I works well for me, using x2go client 3.99.0.5 on ubuntu 12.04 64bits. x2gomountdirs succeeds in mounting local folders. It uses sshfs adresses in the form local_client_user_name@127.0.0.1:server_port/local_path Nevertheless, I doesn't work with a Xubuntu 12.04 32bits client neither with a MAC OS X client : x2gomountdirs tries to mount adresses in the form local_path/ - ie not using ssh port forwarding -. It can not succeed since local_path does not exist on the server ! Problem seems to be linked only to client OS configuration : users have well been added to the fuse group on server. Any ideas (client ssh configuration, ...) ? Best regards, Thierry PS : server is a Xubuntu 64bits running x2goserver 4.0.1.13 -- <http://www.fdsweb.univ-montp2.fr> Thierry KAUFFMANN Chef du service informatique (SIF) Tél : +33 4 67 14 31 58 <tel:+33%204%2067%2014%2031%2058> Mail : Thierry.Kauffmann(a)univ-montp2.fr <mailto:Thierry.Kauffmann@univ-montp2.fr> CC 437 - Place Eugène Bataillon. 34095 Montpellier Cedex 5 - FRANCE. www.fdsweb.univ-montp2.fr <http://www.fdsweb.univ-montp2.fr> FACULTÉ DES SCIENCES/ UNIVERSITÉ MONTPELLIER 2

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floss weekly podcast?
by Les Mikesell 14 Mar '14

14 Mar '14

Does anyone on the x2go team watch/listen to the floss weekly podcast? http://twit.tv/show/floss-weekly/feed I think x2go would make a great topic if anyone wants to talk about it. Directions for getting a project on the show are on the feed page "Email Randall...". -- Les Mikesell lesmikesell(a)gmail.com

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Resolution Problem openSuSE 13.1 vs 12.3 & Debian 7.4.0
by Tobias Hadem 13 Mar '14

13 Mar '14

Hi everybody, i am testing openSuSE 13.1 right now and i have a problem with the automatic setting of a full-screen-resolution. It works without any problem on a Debian 7.4.0 and a openSuSE 12.3, on 13.1 the vertical resolution of 1920 is correct but horizontal resolution is around 1200 instead of 1080. The taskbar on the bottom and the top pixels are outside the screen and the mouse can't reach it. The auto-mounter-pop-up can be half seen, so it looks like 1920x1200 is set. The client is always a windows-x2go-client with exactly the same config, the only difference is a changed ip-address as server so i can test in parallel. Anybody had that problem before? Below is a version-comparison in case that helps. I would love to supply logfiles, i just can't find anything remarkable in syslog and session-log, so i need a hand with that (activate debug, etc) openSuSE 12.3: x2goagent:3.5.0.21 x2goserver:4.0.1.6 xorg-x11:7.6_1-7.1.1 openSuSE 13.1: x2goagent:3.5.0.21 x2goserver:4.0.1.6 xorg-x11:7.6_1-11.3.1 Debian 7.4.0: x2goagent:3.5.0.22 x2goserver:4.0.1.13 x11-common:7.7+3~deb7u1 Thanks a lot! Tobi

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Issue with heuler?
by Ted Barnes 13 Mar '14

13 Mar '14

Hi All - I've recently have had trouble installing x2goserver in virtual machines using the heuler (nightly builds) mirrors. The install hangs on "[info] Cleaning up stale X2go sessions" which I would guess is odd given that the virtual machine is "brand new" and has yet to run any x2go sessions. Q: is this something on my end, maybe a dns issue? Has anyone else seen this? Thanks!

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Re: [X2Go-User] Thin client ISO/USB?
by J.Witvliet＠mindef.nl 12 Mar '14

12 Mar '14

Hi Les, At the studio site you can rebuild a disto and turn them into live-images (usb, iso, virtuals) or installable/deploy-images (usb,iso). On the tab addition-repo's you can search for x2go (that is available on the OBS) It's free of charge, site: https://susestudio.com Amount of time it takes to build varies a lot, from 2 minutes till 30 minutes, depending how busy the engines in the background are. Results can be kept privately, or shared with the community. Just build a stick (460MB download, 1,6GB uncompressed) and an live iso (624MB download, 2GB uncompressed) There is a gallery with pre-defined images, you can use, and you can clone any pre-defined images. For instance, see: https://susestudio.com/search?q=x2go :-)) Hans -----Original Message----- From: x2go-user-bounces(a)lists.berlios.de [mailto:x2go-user-bounces@lists.berlios.de] On Behalf Of Les Mikesell Sent: dinsdag 11 maart 2014 17:35 To: x2go-user(a)lists.berlios.de Subject: [X2Go-User] Thin client ISO/USB? Are any pre-built thin client distributions available? That is, some linux version with good hardware support configured to run live from CD or USB that would come up running x2go? -- Les Mikesell lesmikesell(a)gmail.com _______________________________________________ X2Go-User mailing list X2Go-User(a)lists.berlios.de https://lists.berlios.de/mailman/listinfo/x2go-user ______________________________________________________________________ Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u niet de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, wordt u verzocht dat aan de afzender te melden en het bericht te verwijderen. De Staat aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die verband houdt met risico's verbonden aan het electronisch verzenden van berichten. This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. The State accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages.

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Thin client ISO/USB?
by Les Mikesell 12 Mar '14

12 Mar '14

Are any pre-built thin client distributions available? That is, some linux version with good hardware support configured to run live from CD or USB that would come up running x2go? -- Les Mikesell lesmikesell(a)gmail.com

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x2go loadbalancing with HAProxy
by Thierry Kauffmann 07 Mar '14

07 Mar '14

Hi, As promised I tell you about my experience with loadbalancing x2go. I had first tried to use the default loadbalancing setup of x2go broker. It was working fine except that the Windows client was not connecting to the https broker (due to a bug in the client). It has been fixed quickly and I thank the development team for their reactivity. In the meanwhile, I had looked up alternative solutions and here is what I set up : The broker is a simple HAProxy <http://haproxy.1wt.eu/> loadbalancer configured for ssh connections balancing. For us it listens on port 10000 and dispatches ssh/tcp connections over 2 x2go servers on ports 22 (the default ssh port !). The balancing algorithm is based upon source ip hashing : It gives returning users a chance to be sent to the same x2go server next time and have the possibility to resume a suspended session (better than round-robin). Advantages of that solution : - x2go servers are not exposed to the outside world and there is no need to open ports on the firewall for each x2go server : You only need to open ports for the loadbalancer, which you can put in your dmz. - HAProxy cares to dispatch connections only to x2go servers that are up (timeout configuration). - Authentication is only made once on x2go servers (they are configured with ldap_pam). - No need to install a session broker agent on x2go servers. Drawbacks : - When a user connects with a different public ip, he wont probably be sent to the same x2go server where he could have a suspended session. - Authentication is not made by the loadbalancer so there aren't acl management as with the regular x2go broker. - Every connections transit through the loadbalancer so there might be a little overhead. HAProxy is pretty optimized though and it is not noticeable. I join hereby the HAProxy configuration file I am using. It really works fine for us. I hope it will be useful to others. Best regards, Thierry -- <http://www.fdsweb.univ-montp2.fr> Thierry KAUFFMANN Chef du service informatique (SIF) Tél : +33 4 67 14 31 58 <tel:+33%204%2067%2014%2031%2058> Mail : Thierry.Kauffmann(a)univ-montp2.fr <mailto:Thierry.Kauffmann@univ-montp2.fr> CC 437 - Place Eugène Bataillon. 34095 Montpellier Cedex 5 - FRANCE. www.fdsweb.univ-montp2.fr <http://www.fdsweb.univ-montp2.fr> FACULTÉ DES SCIENCES/ UNIVERSITÉ MONTPELLIER 2

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x2go Mac client and OS X firewall
by R T 06 Mar '14

06 Mar '14

Hello I use x2go 4.1.3 OS X client on Mavericks (10.9.2). It is used to connect to a Linux system, cat /proc/version below: Linux version 3.12.9-301.fc20.x86_64 (mockbuild@bkernel02) (gcc version 4.8.2 20131212 (Red Hat 4.8.2-7) (GCC) ) #1 SMP Wed Jan 29 15:56:22 UTC 2014 % x2goversion x2goagent: 3.5.0.21 x2goserver: 4.0.1.13 x2goserver-extensions: 4.0.1.13 x2goserver-fmbindings: 4.0.1.13 x2goserver-xsession: 4.0.1.13 I use disk sharing between server and client as well. My OS X Firewall is ON, under Options, the “Block all incoming connections” is UNCHECKED, and both “Automatically allow signed software to receive incoming connections” and “Enable stealth mode” are checked. Every time I connect to the server, OS X firewall pops up a message asking 'Do you want the application “x2goclient.app” to accept incoming network connections?’ I have taken the following steps: 1. Clicked “yes”, which adds /Applications/x2goclient.app to the OS X Firewall 2. Remote Login (SSH) is already allowed to receive incoming connections 3. Manually added the following apps to allow incoming connections: - /Applications/x2goclient.app/Contents/MacOS/x2goclient - /Applications/x2goclient.app/Contents/exe/nxproxy - /usr/libexec/sftp-server - /usr/sbin/sshd However OS X still prompts me whenever a connection is made to the remote session, or when a new session is started. How can I stop this annoying message? Thanks Rio

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X2Go - Ubuntu 13.10 - LXDE Session Logout
by gary 05 Mar '14

05 Mar '14

Hi, Firstly, well done to the team behind X2GO, excellent work, and hoping to get involved once we are up to speed... We have noticed a number of problems with using LXDE on Ubuntu recently. Initially, under a 12.04 (.3?) build ( 3.5 Kernel ), we had LXDE working fine/well, with the bindings etc correct. logout was fine. 12.04 got upgraded to 12.04.4 and the kernel moved to 3.8. LXDE still works, but the logout button/process doesnt work anymore. the session simply seems to reset, and stay active. We have also tried a vanilla 13.10 server build ( 3.11 kernel ) , with x2goserver, Same outcome. The only way to close the LXDE session, in both cases, is to exit the client.. When you log back in as the user, the original session is 'Suspended'. Build Sequence ( in both cases ) # apt-get install xfce4 xfce4-goodies lxde lxpanel lxsession pcmanfm openbox lxde-common firefox zenity # add-apt-repository ppa:x2go/stable # apt-get update # apt-get install software-properties-common python-software-properties x2goserver x2goserver-xsession x2golxdebindings ( Notice no ubuntu-desktop load, trying to keep the install clean and secure ) . Ive googled around, and have seen - Problems with startlbuntu and lxde-session between versions - systemd causing pam wrap and config to screw up .. Has anybody else noticed this.. found a work around ? BTW : 12.04 LTS Updated to 12.04.4.. became 13.04, and now ppa: x2go/stable doesnt have x2goserver packages available. many Thanks for all support Gary

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Ubuntu 13.04 builds from the PPA
by Michael DePaulo 03 Mar '14

03 Mar '14

On Mon, Mar 3, 2014 at 2:59 AM, gary <gary(a)idistech.demon.co.uk> wrote: > BTW : 12.04 LTS Updated to 12.04.4.. became 13.04, and now ppa: x2go/stable > doesnt have x2goserver packages available. Hi Gary, I'm sorry to hear that you are running into both these issues. However, the lack of 13.04 builds on the stable PPA is a separate issue so I am changing the subject of this email. I can confirm that 13.04 (raring) builds are not longer available in the stable PPA: https://launchpad.net/~x2go/+archive/stable or in the nightly PPA: https://launchpad.net/~x2go/+archive/ppa However, they are still available in the Baikal LTS PPA: https://launchpad.net/~x2go/+archive/baikal Could you please try the Baikal LTS PPA? Also, MIke#1, is this something you purposely configured on launchpad? -Mike#2

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Fwd: x2gostartagent command argument
by Brian Lim 03 Mar '14

03 Mar '14

My need is to operate a headless ubuntu server. On the man page for x2gostartagent is thefollowing information for the "command". *The command given by the <command> argument is only used to create the session ID* Unsure what to provide, given this information, I am providing "pwd", as an arbitrary and harmless Linux command. What would you advise, please?

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https broker-url and Windows x2go client
by Thierry Kauffmann 27 Feb '14

27 Feb '14

Hi, As this is my first post on the mailing list, I would like to congratulate the development team for the great work with x2go : It is allowing us to give access to our Linux image outside the wall of the Faculty at very low cost. I have set up an x2go broker server with https enabled : Apache Virtual Host + wsgi + plain + inifile + pam_ldap authentication. Connecting to the broker and getting connection profile works like a charm from an Ubuntu 12.04 x2go client (using --broker-url=https://x2go_broker_ip/plain/inifile) But, I keep getting a connection error (Failed Authentication) from a Windows x2go client (I am testing with version 4.0.1.3 on Windows XP). Bug has already been filed (*258 days old)*: http://bugs.x2go.org/db/22/229.html It is extremely annoying : It prevents us from deploying x2go largely in our University ! Any plans to solve this issue ? Best regards, -- <http://www.fdsweb.univ-montp2.fr> Thierry KAUFFMANN Chef du service informatique (SIF) Tél : +33 4 67 14 31 58 <tel:+33%204%2067%2014%2031%2058> Mail : Thierry.Kauffmann(a)univ-montp2.fr <mailto:Thierry.Kauffmann@univ-montp2.fr> CC 437 - Place Eugène Bataillon. 34095 Montpellier Cedex 5 - FRANCE. www.fdsweb.univ-montp2.fr <http://www.fdsweb.univ-montp2.fr> FACULTÉ DES SCIENCES/ UNIVERSITÉ MONTPELLIER 2

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restricting arbitrary ssh commands
by Kris Ilowiecki 26 Feb '14

26 Feb '14

Hello Everyone, I am trying to figure out a way to have X2Go work without giving the user ssh access to the server. The approach I have taken is to use XDMCP. I have created a new 'switcher' user on the server, who connects with ssh keys and launches XDMCP where the real user can authenticate. However, I have problems restricting the access of this initiating 'switcher' user. I thought it would be enough to allow him to run x2gostartagent with the ssh key, i.e. command="/usr/bin/x2gostartagent ${SSH_ORIGINAL_COMMAND#* }" ssh-rsa... However, on closer inspection with acct I have noticed that there are several commands run before x2gostartagent, apparently including several instances of bash. Is bash used directly, or would restricting ssh commands to x2gopath, x2gosyslog, x2gostartagent, (...?) work? Or would it be possible to put 'switcher' in a chroot jail, and then have the XDMCP-authenticated user outside of it? From what I can see, NX3.5 approached this by encapsulating everything in nxserver, which was then set in /etc/passwd as the shell of the nx user. The goal is to prevent the user from executing arbitrary commands, in particular initiating data transfers. Any ideas or comments most appreciated Many thanks, Kris

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Re: [X2Go-User] Remote folder mounting fails sometimes
by Michael DePaulo 24 Feb '14

24 Feb '14

Hi Emanuele, 1st of all, I'm glad you were able to find a workaround. I am replying to the mailing list so that people can see that workaround. I ran some tests. I believe I was unable to reproduce your bug, but I did produce a different bug: https://docs.google.com/spreadsheet/ccc?key=0AmL_OrCln9ShdHcxbTQ3amJZdlp1b3… I will check if my bug is already reported. If it isn't, I will report it. In the meantime, can you please report your bug to our bug tracker? Instructions here: http://wiki.x2go.org/doku.php/wiki:bugs File the bug against the package "x2goserver". Please mention your exact client OS and server OS. Also the x2go client version and the x2go server version For example: Win 8.1 64-bit Pro Ubuntu 12.04.4 32-bit X2Go Client 4.0.1.3 X2Go Server 4.0.1.13 I understand that you are not an expert with Linux, so let us know if you have any questions. -Mike#2 On Fri, Feb 21, 2014 at 9:30 AM, Emanuele Marra <marraemanuele(a)gmail.com> wrote: > Thanks, in the meantime I added the nonempty option in x2gomountdirs, so at > least on next sessions the mounting doesn't fail. I have about 10 clients > connected so I'll find out soon if the problem occurs again. > > > 2014-02-21 15:07 GMT+01:00 Michael DePaulo <mikedep333(a)gmail.com>: > >> Whoops, should have sent this to the list. >> >> On Fri, Feb 21, 2014 at 9:06 AM, Michael DePaulo <mikedep333(a)gmail.com> >> wrote: >> > I'll try to investigate it over the next 2 days. >> > >> > -Mike >> > >> > On Thu, Feb 20, 2014 at 11:35 AM, Emanuele Marra >> > <marraemanuele(a)gmail.com> wrote: >> >> Thanks for the help. >> >> I'm using windows 7 64 bit, but I have the same issue on other machines >> >> with >> >> windows xp installed. >> >> I think what happens is this: >> >> I start the client a first time, the folder doesn't get mounted. Now, >> >> on the >> >> remote machine runs a company software which writes to the mounted >> >> folder, >> >> since the folder is not there the software creates the folder >> >> structure. On >> >> the next time the client is opened, it tries to mount the directory and >> >> that >> >> error comes out since the mount point is not empty. >> >> So my guess is sometimes at session startup the mounting fails. I also >> >> see >> >> this in the mounts.log: >> >> >> >> read: Connection reset by peer >> >> >> >> Any idea why this happens? Thanks again >> >> >> >> >> >> 2014-02-20 16:01 GMT+01:00 Michael DePaulo <mikedep333(a)gmail.com>: >> >> >> >>> I think this is a known issue that only affects certain versions of >> >>> windows. What version of windows are you running? E.g.windows 7 64-bit >> >>> pro >> >>> sp1 >> >>> >> >>> On Feb 20, 2014 3:56 AM, "Emanuele Marra" <marraemanuele(a)gmail.com> >> >>> wrote: >> >>>> >> >>>> Hi, >> >>>> I configured a shared folder with my x2go Windows client. I noticed >> >>>> that >> >>>> sometimes the mount doesn't work and I get this error in mounts.log: >> >>>> >> >>>> fuse: mountpoint is not empty >> >>>> fuse: if you are sure this is safe, use the 'nonempty' mount option >> >>>> >> >>>> to solve the issue I have to run this commands: >> >>>> >> >>>> fusermount -z -u /tmp/.x2go-USER_NAME/media/disk/_cygdrive_FOLDER >> >>>> sudo rm -R -f /tmp/.x2go-USER_NAME/media/disk/_cygdrive_FOLDER >> >>>> >> >>>> and restart. >> >>>> >> >>>> Any idea why this happens and how to prevent it? >> >>>> >> >>>> Could be a solution to insert the -nonempty option in the mount >> >>>> command, >> >>>> where I can find this in the scripts? >> >>>> >> >>>> I'm a beginner with x2go and I'm not an expert with linux either. >> >>>> Thanks >> >>>> in advance for your help. >> >>>> >> >>>> _______________________________________________ >> >>>> 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] sound is really bad
by Michael DePaulo 24 Feb '14

24 Feb '14

Whoops, forgot to reply to the listserv. Right, that is important to note. It means you have PulseAudio 4.0, and this may be specific to PulseAudio 4.0 when on Linux. On Mon, Feb 24, 2014 at 7:43 AM, Neal Becker <ndbecker2(a)gmail.com> wrote: > My client is fedora f20 kde - same as my server - if that matters > > > On Sun, Feb 23, 2014 at 12:58 PM, Michael DePaulo <mikedep333(a)gmail.com> > wrote: >> >> Hi Neal. >> >> I meant to reply to this earlier, but never did. >> >> With windows x2goclient, we have this problem when using client-side >> pulseaudio 1.1 or newer, and only when using flash player. >> >> Can you try another server-side app such as html5 audio in your browser, >> or playing a local .ogg file in an app like rhythmbox? >> >> -Mike#2 >> >> On Jan 24, 2014 7:27 AM, "Neal Becker" <ndbecker2(a)gmail.com> wrote: >>> >>> I updated to x2goclient-4.0.1.3-2.fc20.x86_64 >>> (but did not update libssh). >>> >>> I started a new session. Now there is sound, but it's really bad. >>> >>> I tried playing the stream of a radio station via chrome. The sound is >>> very >>> choppy, and it seems to be playing very slowly! >>> >>> The connection is to a machine sitting next to me via 1G enet. >>> >>> >>> _______________________________________________ >>> X2Go-User mailing list >>> X2Go-User(a)lists.berlios.de >>> https://lists.berlios.de/mailman/listinfo/x2go-user > >

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Session resume problems
by Ondra 24 Feb '14

24 Feb '14

Hello, I have been using x2go for many months now, client (Debian amd64 4.0.1.1-1), x2goserver (Debian amd64 4.0.1.6-0) .. is the current version, but it's been the same ever since. I use it in the "single application" mode, starting only xfce4-terminal and all the other windows are spawned from that terminal. What happens is that very often (I would say 20-30% of the cases -- it's not deterministic), I would resume a session, it is "resumed", but no windows appear. Nothing helps, suspending and resuming does not work. The only thing to do is to terminate the session and start anew. It's quite annoying:) I wonder if anyone has this issue or am I doing something wrong / non-standard? How can I debug this? BTW, I use awesome wm now, but the same was happening to me on xfce, too thanks for any suggestions / pointers -- Ondrej

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