x2go-dev September 2010

x2go-dev@lists.x2go.org

32 participants
42 discussions

x2goclient-cli don't terminates correctly?
by Thomas T. 15 Sep '10

15 Sep '10

Hi, I have noticed that x2goclient-cli doesn't close all "Childproceses" after I closed/terminated a session. If I try to use sound , can't get artsd running properly :/ , there will be 2 SSH connections left, else only one SSH connection. Example with --use-sound -no : ps -A -f During running session: admin 22945 22534 0 13:53 pts/0 00:00:00 /usr/bin/perl /usr/bin/x2goclient-cli --user oldpc --server 192.168.0.3 --use-sound no --port 22 --command gnome-session admin 22954 22945 0 13:53 pts/0 00:00:00 sh -c DISPLAY=:0 SSH_ASKPASS=/home/deka/.x2go/ssh/askpass setsid ssh -p 22 -N -L 30001:localhost:30001 oldpc(a)192.168.0.3 admin 22955 22954 0 13:53 ? 00:00:00 ssh -p 22 -N -L 30001:localhost:30001 oldpc(a)192.168.0.3 admin 22957 22945 0 13:53 pts/0 00:00:00 sh -c LD_LIBRARY_PATH=$X2GO_LIB nxproxy -S nx/nx,options=/home/deka/.x2go/S-oldpc-50-1284465225/options:50 2>>/home/deka/.x2go/S-oldpc-50- admin 22959 22957 0 13:53 pts/0 00:00:00 /usr/lib/x2go/nxproxy -S nx/nx,options=/home/deka/.x2go/S-oldpc-50-1284465225/options:50 After closing/terminating the session: admin 22955 1 0 13:53 ? 00:00:00 ssh -N -L 30001:localhost:30001 oldpc(a)192.168.0.3 Starting a new session brings me to bind: Address already in use channel_setup_fwd_listener: cannot listen to port: 30001 Could not request local forwarding and my System is collecting zombie ssh processes after several sessions ;) Is this a small Bug, got any else that Problem or is my fault aka messed up sys config? PS: No Problem with qt/gtk x2goclient but I forced to use the cli client and is there a chance for an pulseaudio update for x2goclient-cli? Sincerely, Thomas, Berlin 14.09.10

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X2Go client occasionally loses mouse cursor
by John A. Sullivan III 15 Sep '10

15 Sep '10

Hello, all. We've seen this bug rarely but enough to know that it is a real bug and not just a coincidence. Here is the report from our internal trouble ticket. Unfortunately, it smells like it might be something in the NX libraries: The user called because she could not see her mouse cursor in her virtual desktop. It was visible in her physical desktop. As we later observed, it was indeed present in the virtual desktop, e.g., if she happened to stop the mouse over a file in Konqueror, it would display the thumbnail, but the mouse cursor was not visible. We tried suspending and reconnecting; that did not work. I could see where the mouse was supposed to be via my VNC session to her physical desktop so I tried to change the mouse cursor theme but that did not work (and required a restart of KDE). Finally, before rebooting to try to re-establish the connection between her physical and virtual desktops to display the mouse cursor, we thought to suspend her X2Go session and then completely close her X2Go client. When she restarted the client and reconnected to her X2Go session, the mouse had re-appeared. We did not need to reboot the physical computer.

4 7

Local Port for NXPROXY - no listen socket
by Stefan Bauer 09 Sep '10

09 Sep '10

Morning, i investigated the problem "debian lenny x2goserver-one - remote NX proxy closed the connection" a little further: Sep 9 09:38:13 x2go sudo: toni : TTY=unknown ; PWD=/home/toni ; USER=root ; COMMAND=/usr/bin/x2gopgwrapper createsession 82c97d9dce4c8f5ba52c8d98f4d560ca 7016 192.168.0.16 30031 30032 30033 toni-60-1284017892_stRxterm_dp32 According to x2gowrapper it is dumping gr_port='$5',sound_port='$6',fs_port='$7' so 30031,30032,30033 to sqlite. Anyway what is expected to run on these ports and how are they assigned? Everytime i try a connect, they are just increased. Sep 9 09:38:14 x2go sshd[7026]: error: connect_to localhost port 30031: failed. This is expected, as nothing is listening on these ports: x2go:/var/mail# tcpdump -i lo tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on lo, link-type EN10MB (Ethernet), capture size 96 bytes 09:38:14.446881 IP localhost.60169 > localhost.30031: S 09:38:14.447767 IP localhost.30031 > localhost.60169: R 09:38:14.447860 IP6 localhost.32904 > localhost.30031: S 09:38:14.448022 IP6 localhost.30031 > localhost.32904: R so it tries to connect to port 30031 first by ipv4 then ipv6 but nothing is listening on this port hence the R flag -> reset. What is wrong here!? Stefan -- Stefan Bauer ----------------------------------------- PGP: E80A 50D5 2D46 341C A887 F05D 5C81 5858 DCEF 8C34 -------- plzk.de - Linux - because it works ----------

2 2

debian lenny x2goserver-one - remote NX proxy closed the connection
by Stefan Bauer 08 Sep '10

08 Sep '10

Hi folks, i was hoping to not have to abuse the list but i'm having problems to get things working: X2Go Client V. 3.01-2 Trying to start an xterm on the x2go-server i got the following: NXPROXY - Version 3.0.0 Copyright (C) 2001, 2007 NoMachine. See http://www.nomachine.com/ for more information. Info: Proxy running in client mode with pid '3820'. Session: Starting session at 'Wed Sep 8 20:26:14 2010'. Info: Connecting to remote host 'localhost:30007'. Info: Connection to remote proxy 'localhost:30007' established. Error: The remote NX proxy closed the connection. Error: Failure negotiating the session in stage '7'. Error: Wrong version or invalid session authentication cookie. /var/log/auth.log is here: http://nopaste.info/ebef4d50f6_nl.html Did i miss something? I expected a straightforward installation according to the documentation. Help is greatly appreciated Stefan -- Stefan Bauer ----------------------------------------- PGP: E80A 50D5 2D46 341C A887 F05D 5C81 5858 DCEF 8C34 -------- plzk.de - Linux - because it works ----------

3 13

Prevent session suspending and resuming
by Kevin Moellering 08 Sep '10

08 Sep '10

> Am 09.08.2010 17:12, schrieb contact at gmli.fr: > > Hi, > > > > I would like to do two things : > > > > - prevent users from suspending their session > > - prevent users from resuming their session > > You should take care about the *bindings packages - if you are using > kde, you should not execute the command "updatelockbutton". > The postgresdb/sqlitedb is used for sessionresuming. If you make sure, > that "x2golistsessions" won't return any running sessions, no session > will be returned. Hello everybody, after reading the archives of the mailing list I'm still not completely sure if there actually exists a functionality that cleans up sessions of users that are inactive for X hours. Now I decided to completely prevent users from suspending their sessions. I read the entry from Heinz-M. Graesing which he made on Sunday, the 9th of August 2010, but as far as i can see this does not prevent users from suspending their session when hitting the X on the upper right of the x2go window. Wouldn't it also be a feasible workaround to overwrite /usr/bin/x2gosuspend-session with /usr/bin/x2goterminate-session? I've tried this and the sessions seem terminated. At least I get a blank desktop if I login again after closing the window with the x-Button and the processes are killed (cannot be found using the ps command). Is that solution possible, or am I missing something? Referring to the case of resuming a session, I think it is clear that if there is no possibility to suspend sessions, it should be impossible to resume a session, too. Furthermore, if there is the possibility of an inactivity detection and thereby triggered session termination, I would also appreciate any information about that. Greetings, Kevin

2 1

Prevent session suspending and resuming
by Kevin Moellering 08 Sep '10

08 Sep '10

1 0

windows installer and Xming
by Léon Keijser 08 Sep '10

08 Sep '10

Hi, I wanted to package our own application with the X2Go installer and i noticed that you also packaged the Xming installer in the x2go installer. I use the X2go /S switch to install without user confirmation, but afterwards Xming's installer is called and prompts the user for confirmation messages (which i don't want to). Is it possible for you to release the X2Go installer without the Xming packaged? I can include it separately and use its /SILENT switch to skip all user confirmation screens. Thanks in advance! kind regards, Léon

2 3

Souce of Windows client available?
by Arjen Roodselaar 07 Sep '10

07 Sep '10

Hi list, We considering migrating from our current Linux terminal servers solution to X2GO. During tests however, we discovered copy/paste from a Windows client to Linux server is not available. Since this is a show stopper for us we're considering developing this ourself and contributing this functionality to the project. Is the source of the latest Windows client available somewhere so we can have a look at it? Thanks in advance, Arjen Roodselaar Lindix bv

2 1

Re: [X2go-dev] Troubleshooting Windows client
by Floating World 06 Sep '10

06 Sep '10

Ah, I have answered my own question. There were two problems: The first was that I was using version 3.01-2 of the client. I chose it because it was listed under "Stable" at the x2go.org web site. I replaced it with 3.01-4 and that worked more smoothly. The second problem was related to DNS. On my Windows box I use Apple's Bonjour Print Services: http://support.apple.com/kb/DL999 Which is an implementation of zeroconf that interoperates with Ubuntu's avahi, so that when you're using DHCP with changing IP addresses as I am instead of looking up the IP you can just type in servername.local. It works when pinging from the command line and when I'm using PuTTY but for some reason it doesn't work in the x2go client; when I entered the IP address of the server in the session settings I was then able to connect successfully. So, sorry for the confusion. Thanks again for this wonderful piece of software, it will make things so much easier for me. fw

1 0

Troubleshooting Windows client
by Floating World 06 Sep '10

06 Sep '10

Hello, I am having some trouble with the x2go Windows client 3.01-2. I have several Ubuntu 9.04 systems and a Windows XP SP3 system. I have installed x2goserver-one 3.0.1-1, x2gognomebindings 2.01-1, and x2goclient (QT4 version) 3.01-5 on the Linux systems (those versions are the ones apt chose from your repository) and they are able to connect to each other with what appears to be full functionality. But the Windows system cannot connect to any of the Ubuntu systems, even using the exact same session parameters. So it would seem that the problem must be with the client on the Windows box? The Windows box definitely has network connectivity to the others; I am using VNC and SSH via PuTTY already. After I press "OK" in the PIN entry dialog there is a pause of 30 or 40 seconds and then I get a popup titled "Error": Connection failed servername.local: ssh: connect to host servername.local port 22. Connection timed out In the auth.log on the server there are no corresponding entries appearing in response to the attempt. Is there a client-side log or some other method I could use to trace where the problem is occurring? Thank you, fw P.S. This is fabulous software and I imagine it will be standard in Linux distributions before too long.

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x2go-dev September 2010