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gnome-sessions on Ubuntu 15.10+
by Eugene San 24 Dec '15

24 Dec '15

Hi all. I am trying to fix gnome sessions (gnome flashback) on Ubuntu 15.10+. I started with fixing session name (flashback -> flashback-metacity) and disabling acceleration check (--disable-acceleration-check), but the sessions are still broken, they start as a black screen and crashes after few minutes. Logs are inconclusive. I guess services are failing to start and the problem is related to recent systemd-user-init and upstart mixture for sessions start-up. Can anyone educate me how exactly the sessions are starting in recent releases and where the problem might be? Thanks.

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Bug#645: (no subject)
by Miguel Dilaj 21 Dec '15

21 Dec '15

Hi all, If you are using JDK8, and running the offending program using strace causes entries like this one: java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData Then it's not an X2Go bug, it's a Java bug. See http://bugs.java.com/bugdatabase/view_bug.do?bug_id=7172749 Many Java programs are affected when run over X2Go. The only workaround I've found is downgrading to JDK7, where the bug is not present. Presumably Oracle will solve it in JDK9, but I don't have the time to extensively test it. Hope that helps! Kind regards, Miguel

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Bug#975: X2Go Problems
by David Laxer 21 Dec '15

21 Dec '15

Package: X2Go Client Version: 4.0.5.0 Hi, I am running X2Go Client v. 4.0.5.0 (Qt - 4.8.7) on OS X 10.11.2, the server is Linux. I’m having: 1. frequent crashed (20+ times / day). 2. copy / paste problems. Any ideas? Thanks in advance. Best, -Dave

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Bug#974: Server side disk full issue fails to communicate error to client
by Brian Bourke-Martin 21 Dec '15

21 Dec '15

package: x2goserver Version: 4.0.1.19-0~1064~ubuntu14.04 My x2goclient was hanging after a ssh connection was being made to the server and after a fair amount of time attempting to sort out what when wrong I ended up having to cut and paste the bash remote commands over a ssh session to figure out that a different service filled the disk. Obviously the disk filled issue is not an issue for x2go, but it would make life much easier if the error output from the remote commands could be relayed back to the client for display to the user.

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Bug#972: x2go client crashes after moving primary key
by Dennis Jaheruddin 15 Dec '15

15 Dec '15

Package: x2goclient Version: 4.0.5.0 After moving the (folder containing the) primary key that was needed for my session , I tried to connect and got the message "x2goclient.exe has stopped working". I understand that it cannot connect to the session without primary key, but it should not crash on this, but rather return a message like "Primary key file not found at ...". This would help people a lot who try to use a session after some time has passed between projects, as the current error message does not give any hint on what the problem might be. Kind regards, Dennis Jaheruddin Consultant Analyst Data Science | Predictive Modeling | Advanced Analytics | Operations Research PA Consulting Group PA Consulting Services B.V. staat ingeschreven bij de Kamer van Koophandel onder nummer 27110990. Geregistreerd adres: Sophialaan 1A, 2514 JP, Den Haag, Nederland. Handelsadres: Orteliuslaan 1001, 3528 BE, Utrecht, Nederland. Indien u niet de beoogde ontvanger van dit bericht bent, verzoeken wij u dit bericht te verwijderen, eventuele bijlagen niet te openen en en de afzender te informeren. Het is niet toegestaan om dit bericht, geheel of gedeeltelijk, zonder toestemming te gebruiken of te verspreiden.

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Central Settings for X2Go Client
by Oleksandr Shneyder 14 Dec '15

14 Dec '15

Hi All, there is a new feature in X2Go Client called "Central Settings". With this feature you can control X2Go Client settings for all users on machine in one place. The Client settings could be stored in /etc/x2goclient/config on Linux and Mac and in HKEY_LOCAL_MACHINE\\SOFTWARE\\x2goclient\\config on Windows. if this directory/regkey exists, X2Go Client will read settings from /etc/x2goclient/config/$USER on Linux/Mac and from HKEY_LOCAL_MACHINE\\SOFTWARE\\x2goclient\\config\\%USERNAME% on Windows. if this directory/key not exists, client will read settings from /etc/x2goclient/config/All Users and HKEY_LOCAL_MACHINE\\SOFTWARE\\x2goclient\\config\\All Users Format of the settings is same as in normal mode and could be easily copied from user directory or exported from Windows registry. in "Central Settings" mode all configuration and sessions editing will be disabled for user. Command line options will be also ignored. You can specify new command line parameters separated by semicolon in the "settings" config file. For example for Linux: $cat /etc/x2goclient/config/alex/settings: [General] commandline="--broker-url=ssh://broker/broker.pl;--maximize" for Windows: HKEY_LOCAL_MACHINE\\SOFTWARE\\x2goclient\\config\\alex\\settings commandline --broker-url=ssh://broker/broker.pl;--maximize this feature will be available from "nightly builds" soon. regards, Alex -- ----------------------------------------------------------- Oleksandr Shneyder | Email: o.shneyder(a)phoca-gmbh.de phoca GmbH | Tel. : 0911 - 14870374 0 Ludwig-Feuerbach-str. 18 | Fax. : 0911 - 14870374 9 D-90489 Nürnberg | Mobil: 0163 - 49 64 461 Geschäftsführung: Dipl.-Inf. Oleksandr Shneyder Amtsgericht München | http://www.phoca-gmbh.de HRB 196 658 | http://www.x2go.org USt-IdNr.: DE281977973 -----------------------------------------------------------

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Bug#971: Unable to restore session with AD login
by Dario Pilori 04 Dec '15

04 Dec '15

Package: x2goserver Version: 4.0.1.19 Hello We are using x2goserver on a Ubuntu 14.04 server, which is member of an AD domain. Users have usernames like "DOMAIN\user". After closing bug #664, users can successfully connect to x2goserver, but they cannot resume a suspended session. Every time the same user connects, x2go opens a new session. Logging in as a regular user via SSH, typing x2golistsessions does not return any output, even if the user has several sessions open. If root runs x2golistsessions_root, it displays all sessions, but in the username field of the table it is displayed the user as "DOMAINuser", without the backslash \. Using PostgreSQL database as a backend instead of SQLite3 fixes the problem. Best regards, Dario

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Re: [X2Go-Dev] [X2Go-User] Global ssh-agent
by Orion Poplawski 03 Dec '15

03 Dec '15

On 12/01/2015 12:34 AM, Dmitry Bely wrote: > Hi Orion, > > On Thu, Nov 26, 2015 at 2:11 AM, Orion Poplawski <orion(a)cora.nwra.com> wrote: >> On 11/24/2015 05:10 AM, Dmitry Bely wrote: >>> Hi, >>> >>> I would like to use ssh-agent globally for X session (Debian/MATE if >>> it matters). X session starts it itself and when I login to X locally >>> it works as expected (SSH_AGENT_PID and SSH_AUTH_SOCK environment >>> variables are set correctly). But if I connect to the host via x2go, >>> strange things happen: in any terminal session SSH_AUTH_SOCK points to >>> non-existing path and SSH_AGENT_PID is not set at all. I tried to work >>> around this adding to ~/.bashrc: >>> >>> if [ ! -S ~/.ssh/ssh_auth_sock ]; then >>> eval `ssh-agent -s` >>> ln -sf "$SSH_AUTH_SOCK" ~/.ssh/ssh_auth_sock >>> fi >>> export SSH_AUTH_SOCK=~/.ssh/ssh_auth_sock >>> >>> This way SSH_AUTH_SOCK is correct but SSH_AGENT_PID is surprisingly >>> unset somethere. Any idea how to fix that? >>> >> >> I don't quite follow what you mean by "globally". Are you using >> desktop-sharing and connecting to an existing X session and want to use that >> ssh-agent? > > I need one ssh-agent per X session that all child processes can access. > >> In that case perhaps your x2go ssh connection is forwarding the >> ssh-agent connection from the client machine and you need to disable the agent >> forwarding. > > Probably you are right. But how to disable it in QT4 x2goclient? If I add > > Host * > ForwardAgent no > > to ~/.ssh/config it affects a separate ssh session but not > x2goclient's one. And I failed to find any command line/GUI x2goclient > option that is related to ssh agent forwarding. Hmm, it appears that the code never calls ssh_options_parse_config(), whether by intention or not I do not know. CCing the dev list to get their take on it. But the libssh docs indicate that it should be called: http://api.libssh.org/master/group__libssh__session.html#ga7a801b85800baa3f… And I can confirm that x2goclient does appear to forward the SSH_AGENT at least if using the ssh-agent for authentication to the remote server. -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA/CoRA Division FAX: 303-415-9702 3380 Mitchell Lane orion(a)cora.nwra.com Boulder, CO 80301 http://www.cora.nwra.com

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Bug#914: X2Go Logout Issue with Mate on Centos7
by Andreas Radke 28 Nov '15

28 Nov '15

This is what goes to the logfile when logging out from Xfce 4.12 on Arch Linux: http://pastebin.com/2Px99pQC - Andy Arch Linux

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Bug#914: Works for Mate desktop, too.
by Milan Knížek 26 Nov '15

26 Nov '15

Hi, the workaround works for mate-session, too. I actually redirected only std out: #!/bin/bash /usr/bin/mate-session >/dev/null

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