x2go-dev

x2go-dev@lists.x2go.org

5400 discussions

X2Go Client connection issue (Socket error)
by Melroy van den Berg 18 May '20

18 May '20

Hi X2go devs, Package: x2goclient Version: 4.1.2.2 (Linux Mint based on Ubuntu Bionic, using PPA) I often get an error message when I try to connect to my Debian buster docker image, running x2goserver and XFCE, via the X2Go Client on my host machine. It will give the following error message (when using the --debug flag on the x2goclient): x2go-DEBUG-../src/sshmasterconnection.cpp:2071> "ssh_channel_open_session failed": "Socket error: No such file or directory" x2go-DEBUG-../src/sshprocess.cpp:478> I/O error: "ssh_channel_open_session failed."" - Socket error: No such file or directory" (0). I created a detailed video, I posted it on YouTube, please take a look at the video: https://youtu.be/LAlLtBNTIUo Logging details, reproducibility and more is explained in the video itself. You'll notice that I can sometimes connect to the XFCE session and sometimes I can't. Although connecting via the ssh cli command is always working without any issues. Meaning there is really some kind of bug in the X2Go Client. I'm afraid. Again, I really hope somebody could help me in finding the root-cause and fixing the issue. Since I really love X2Go. And I would like to use this tool in production. I'm also a software developer so maybe I can help debugging the problem. Similar (same) bug is reported in the past (from 2019): https://lists.x2go.org/pipermail/x2go-user/2019-March/005512.html All the details regarding this Docker image and setup can be found in this git repo: https://gitlab.melroy.org/melroy/xfcevdi See attachments for additional debug logs of the client itself. One when successful and one during the error. Thanks in advance! Kind regards, Melroy van den Berg Ps. You can contact me by mail of course. But I can understand that debugging this issue would be preferable be done via VoIP for example.

2 2

Bug#1451: Issue with some GUI elements not being drawn
by Costanzo, Ian M. 06 May '20

06 May '20

Package: x2go-client Version: 4.1.2.2 Client Setup: Manjaro Linux 19.0.2 x2go-client 4.1.2.2 Server setup: CentOS Linux 7.7.1908 (Core) x2goserver 4.1.0.3 x2goserver-xsession 4.1.0.3 NXagent 3.5.99.17c Hello, I have been experiencing an issue where some gui elements (dropdown menus or popup windows) are not being drawn. In some instances (dropdown menu) it is still navigable and submenus will (sometimes) be drawn. Other instances like pop-up menus are not accessible if not drawn. Checking application logs, it appears the window was successfully launched but the X server isn't drawing it? Not sure, any insight would be appreciated. Regards, Ian Costanzo Electrical and Computer Engineering Worcester Polytechnic Institute imcostanzo(a)wpi.edu 774-312-7019

3 5

Bug#1465: Allow running with restricted shell (rbash), or limit applications that can be run.
by Vladislav Kurz 04 May '20

04 May '20

Package: x2goserver Version: 4.1.0.3-0~1708~ubuntu16.04.1 Severity: wishlist Hello all, we are using x2go to run a single application on remote server, and we want to lock all other access as much as possible. Essentially, we'd like to ensure that even if the user connects via SSH, he could start only one (or limited set) of applications. I found this guide https://wiki.x2go.org/doku.php/wiki:security:rbash but it seems to be somewhat outdated. I followed the instructions, created the wrapper command, set up the symlinks, and configured ssh, but then I get this error: Connection failed. rbash: bash: command not found Apparently x2go client is trying to execute "bash /usr/bin/x2goruncommand" instead of just "x2goruncommand". If I add bash to the path with allowed commands, it starts working. But it makes the whole use of rbash pointless. Also it allows me to run anything via x2go anyway - as x2goruncommand is a bash script, it escapes the restrictions of rbash. Is it possible to update that wiki page with current requirements - what commands are necessary in $PATH for restricted shell ? I found that at least nxagent should be there too. And to modify the login sequence so that bash is not needed in $PATH ? BTW is that defined on server or client? Where exactly? I also found a nice feature "published applications" https://wiki.x2go.org/doku.php/wiki:advanced:published-applications It would be nice, if the x2go server had a config option, allowing users to run only the "published applications", or use some other list of allowed commands. So far my attempts at limiting the access to other applications was not very successful. There's a lot of stuff needed internally by x2go, so I cannot just remove execute bit from many commands in (/usr)/bin/ Thanks for any advice or hotfix. Best Regards Vladislav Kurz

3 12

Bug#1454: Better explain fullscreen keyboard shortcuts usage on multi display setup
by Olivier Gauthier 04 May '20

04 May '20

Package: wiki.x2go.org Add missing keyboard shortcut Shift + Ctrl + Alt + F to x2goclient documentation. I spent an hour trying to figure why my X2Go session would not want to go fullscreen over all my screens like I normally do. I realized I always used Ctrl + Alt + F to go fullscreen as explained at https://wiki.x2go.org/doku.php/doc:usage:x2goclient. That gave me fullscreen session spanning over all multi display screens as expected. However, without noticing it, I started using Shift + Ctrl + Alt + F this morning because my muscle memory have been trained while using Guacamole menu shortcut (uses Shift-Ctrl-Alt keys to toggle menu). I did not notice at first, because Shift + Ctrl + Alt + F also works on X2Go Client, but it only go fullscreen on current display screen. It puzzled me for a while today, so I went back to wiki page, to figure I have been using wrong shortcut. I verified code for key bindings (https://code.x2go.org/gitweb?p=nx-libs.git;a=blob;f=etc/keystrokes.cfg;hb=H…) and it effectively offers two clever options to go full screen on multi displays. > 4 <keystroke action="switch_all_screens" Control="1" AltMeta="1" key="f" /> > 5 <keystroke action="fullscreen" Control="1" Shift="1" AltMeta="1" key="f" /> Here is two wiki patches to help clarify documentation around full screen usage on multi display setups. Feel free to rephrase any way you want. -- Olivier -- doc/usage/x2goclient.txt 70c70,71 < * Ctrl + Alt + F: toggle fullscreen/windowed --- > * Ctrl + Alt + F: toggle windowed/fullscreen over all screens > * Shift + Ctrl + Alt + F: toggle windowed/fullscreen on current screen only doc/usage/multi-display.txt 19a20,26 > > ===== Use keyboard shortcuts to go fullscreen over one or all displays ===== > > There is two different ways to enter fullscreen from keyboard shortcuts. One goes fullscreen over all screens, the other goes fullscreen only on current screen. > > * Ctrl + Alt + F: toggle windowed/fullscreen over all screens > * Shift + Ctrl + Alt + F: toggle windowed/fullscreen on current screen only

2 1

Bug#1463: Old version
by Ulrich Sibiller 03 May '20

03 May '20

Hi, clipboard has been vastly improved during the last year. Please upgrade to a current version of x2goagent resp. nxagent. Current is 3.5.99.23. Uli

1 0

Bug#1450: Fwd: Arrow keys randomly stop working in x2go
by stivstivsti . 03 May '20

03 May '20

Package: x2goclient Version: 4.1.2.2 I am connecting from Ubuntu Linux 18 to another Ubuntu linux machine with x2go. Connection works, but some keys don't, especially arrow keys. When I press up arrow, it starts screen capture: [image: image.png] I tried some recipes from this question: https://serverfault.com/questions/582552/x2go-arrow-key-is-not-working-prop… but they don't help. *setxkbmap us -print | xkbcomp - $DISPLAY* -- doesn't fix the problem. I tried to play with keyboard settings here: [image: image.png] but it doesn't help also. How can I fix it? I've followed instruction from wiki.x2go.org updating x2goclient to 4.1.2.2-0~1913~ubuntu18.04.1 and x2goserver to 4.1.0.3-0~1708~ubuntu18.04.1. The problem is still there.

2 1

Bug#1456: Local window manager misbehaves when X2Go windows are open.
by Itay Chamiel 01 May '20

01 May '20

Package: x2goclient Version: 4.1.2.2 or 4.1.1.1 Environment: Client: Ubuntu 18.04 LTS, 64-bit, freshly installed and fully updated, running X2Go Client v. 4.1.2.2 (Qt - 4.8.7). Machine is a Dell Vostro 15 3000 laptop, with an external monitor connected and the lid shut. Server OS: Ubuntu 16.04.1 LTS, x2goserver 4.1.0.3 Steps to reproduce: 1. Start with a typical local desktop session (tested on default Ubuntu desktop as well as Cinnamon), with at least one window open (say, a web browser or email client). 2. In X2Go define a session: set the session name, host, login, check "try auto login". Session type: Single application, choose "Terminal" from the drop-down. 3. Start this session. X2Go will connect and a "Konsole" window will appear. [note: if you get a different terminal, go back to step 2 and type "konsole" as the requested remote application. Konsole is not the only terminal to exhibit this bug but is the easiest to reproduce it with.] 4. Type something in the terminal, "hello", whatever. 5. Now try to switch to another window using Alt-Tab or clicking on the task bar icon representing that window. When I perform these steps the requested window does not appear and the Konsole remains on top and in focus. The only way to return to normal behavior is to minimize the Konsole window.

2 2

Bug#1466: x2gokdriveclient not packaged for windows
by Михайло Падалка 24 Apr '20

24 Apr '20

Package: x2goclient Version: 4.1.2.2 X2GoClient installer for windows has no x2gokdriveclient.exe packaged, but has an option "Run in X2GoKDrive (experimental)" available. That's at least confusing, as it will never work. Either x2gokdriveclient should be packaged (preffered, as X2GoKDrive works better for modern desktops), or that option should be not available on Windows.

1 0

Bug#1458: unattended Debian installations (using preseed) fail when x2gobroker-ssh is involved
by Stefan Baur 21 Apr '20

21 Apr '20

package: x2gobroker-ssh version 0.0.4.1 severity: important The postinst file for x2gobroker-ssh contains a check to see if the nscd binary is somewhere in the path. If it is, then nscd -i group is called, to purge the group cache (which makes sense, as a new group has been added in a previous step, so the cached information is outdated). If it is not, then it is assumed that nscd is not installed, thus, no group information is cached, and thus, no purge is needed. This fails to take into account that nscd might be (freshly) installed, but not running. Which is the case during a preseeded Debian installation (and probably when running debootstrap as well). The result is that "nscd -i group" is called even though nscd isn't active at the moment. Which triggers a return code of "1". Which in turn causes the postinst script to report "1" as its return code. This, of course, gets passed back up to the debian-installer, which decides to abort the installation, as it seems that something went wrong during installation of the package. The patch is rather simple: Instead of checking for the presence of the executable in the file system, check if it is currently running: - if which nscd 1>/dev/null; then + if ps -C nscd 1>/dev/null; then As this is currently breaking all automated x2gobroker-ssh installs, I would suggest releasing a new version containing only this patch ASAP, if a full release with all changes since the last proper release of x2gobroker-ssh would bring too many changes at once for a timely release. Kind Regards, Stefan Baur -- BAUR-ITCS UG (haftungsbeschränkt) Geschäftsführer: Stefan Baur Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364 Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243

6 11

Processed: Re: Bug#1460: Acknowledgement (Windows client crashes if Jumphost runs NetBSD 6 (probably race))
by X2Go Bug Tracking System 21 Apr '20

21 Apr '20

Processing commands for control(a)bugs.x2go.org: > reassign 1460 x2goclient 4.1.2.2 Bug #1460 [x2go-client for windows] Windows client crashes if Jumphost runs NetBSD 6 (probably race) Warning: Unknown package 'x2go-client' Warning: Unknown package 'for' Warning: Unknown package 'windows' Bug reassigned from package 'x2go-client for windows' to 'x2goclient'. No longer marked as found in versions 4.1.2.2. Ignoring request to alter fixed versions of bug #1460 to the same values previously set Bug #1460 [x2goclient] Windows client crashes if Jumphost runs NetBSD 6 (probably race) There is no source info for the package 'x2goclient' at version '4.1.2.2' with architecture '' Unable to make a source version for version '4.1.2.2' Marked as found in versions 4.1.2.2. > End of message, stopping processing here. Please contact me if you need assistance. -- 1460: bugs.x2go.org/cgi-bin/bugreport.cgi?bug=1460 X2Go Bug Tracking System Contact owner(a)bugs.x2go.org with problems

1 0

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

x2go-dev