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2325 discussions

Reset custom x-server in x2goclient?
by Stew Wilson 17 Jul '26

17 Jul '26

Hi, I’m in a somewhat unique environment — we run a preconfigured x2go as the only program for users connecting remotely to a Windows Server, so that they can then pick a session and go without having to set up ssh tunnels and configuring sessions directly. This is how our researchers connect via GUI to a remote pool of linux machines used for high-performance compute. It’s pretty critical that this service is up and running. To make changes remotely, we log in to the server as administrator, change the system to use a custom X-Server of c:/Windows/System32/explorer.exe. I am aware that this is probably doing a hundred things wrong already. I inherited this setup with no documentation, and the person who set it up has not worked here for several years. Unfortunately, I think I must have made a typo in the custom X-server executable path. The x2go client starts, immediately pops up a modal dialogue of “Can't start X Org Server, please check your installation”, and hitting OK on that closes x2go client (and thus logs off the connected user). Currently logged in users from before the typo are unaffected, and have long-running jobs that they need to continue, so I can’t just reboot the server to test because that would kick them all off, and if they can’t then smoothly reconnect it'd start a riot. I’ve dug through the file system and registry to find where this setting is stored so I can revert to using the integrated X-Server, or at least disable the modal pop-up so I can change settings in the x2go client itself, but have had no luck. If anyone has any ideas I’m all ears. Cheers, -Stew -- Stew Wilson (he/him) Computing Infrastructure Administrator, PPLS The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.

2 1

X2Go Client on latest macOS updates (Tahoe/Sequoia)
by Norman Gaywood 16 Jul '26

16 Jul '26

x2goclient on the latest (macOS Tahoe 26.x or newer) instantly drops your connection to an x2goserver. There seems to be a problem with the connection between x2goclient and Xquartz on the Mac. We found this to work to get your connection going: Instead of opening X2Go via the application icon, open your Mac Terminal and run the following command: DISPLAY=":0" /Applications/x2goclient.app/Contents/MacOS/x2goclient & Is there any chance this can be packaged in the Mac version of x2goclient? Norman Gaywood, Computer Systems Officer Technology and Digital Services University of New England Armidale NSW 2351, Australia Phone: +61 (0)2 6773 2412 Mobile: +61 (0)4 7862 0062

1 0

Recommended desktop for Ubuntu 26.04
by Kalle Tuulos 15 Jun '26

15 Jun '26

Hello In short: what is the recommended desktop environment when using Ubuntu 26.04 over X2Go? What I have googled is that at least Gnome and KDE are out of question, as they are Wayland based. But then of alternatives, is it xubuntu or lubuntu? BR, Kalle

2 1

Signing key deprecated
by Christoph Pleger 23 Feb '26

23 Feb '26

Hello, at leat on Debian trixie, your SHA1 signing key is deprecated since yesterday and is not accepted any more. Regards Christoph

2 1

Trying to raise a bug issue and workaround - where?
by Joshua Kite 18 Feb '26

18 Feb '26

I have found a bug and workaround in x2goclient on MacOS Sequoia. I am trying to raise report/this but where? The official wiki advice <https://wiki.x2go.org/doku.php/wiki:bugs> suggests applying to join the GitLab org - I've applied but I have to wait for admin approval. There's an IRC/Matrix channel <https://wiki.x2go.org/doku.php/contact:start>where it was suggested I also join the mailing list. The bugs mailing list <https://lists.x2go.org/listinfo/x2go-bugs> does not appear to have been active for a decade <https://lists.x2go.org/listinfo/x2go-bugs> although I have subscribed. A kind soul on IRC suggested also joining this mailing list but I am not sure that this is the right place to raise a bug report. Without meaning to be rude about a great software project, the situation does seem a bit ridiculous. I run my own (much, much smaller) open source project onGitHub and if people want to raise an issue then they can just do that, ditto me for many of the other open source software projects I use. It's unfortunate that there isn't a clear and straightforward way here. If anyone is able to comment on the correct route to raise an issue/bug then I should be grateful, thanks Joshua

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x2go does not show the remote desktop I invoke
by Athanasios Silis 20 Jan '26

20 Jan '26

Hi all, I recently installed x2goserver (and x2goclient but this is probably not relevant in this case) on a fresh slackware-current system. Then, using x2goclients from other computers (other slackware64-15.0, ubuntu20.04 and 24.04 and debian systems) I want to "fetch" a desktop from this fresh system to one of the other client systems. The connection seems to go through normally but I never see a desktop window poping up. I have tried "xfce" and "fluxbox" (as a custom command) both of which have been faithfully working in the past and in other installations. I used `x2goclient --debug` to invoke the session and see if there are any meaningful messages error messages from the client side, but I have not been able to figure out if there is anything relevant: $ x2goclient --debug qt5ct: using qt5ct plugin x2go-INFO-1> "Starting X2Go Client 4.1.2.2..." [...] x2go-INFO-3> "Started X2Go Client." [...] x2go-INFO-8> "Starting connection to server: x.x.x.x:22" [...] x2go-DEBUG-../src/sshmasterconnection.cpp:687> User authentication OK. [...] x2go-DEBUG-../src/sshmasterconnection.cpp:702> Login Check - OK x2go-DEBUG-../src/onmainwindow.cpp:2947> SSH connection established. x2go-DEBUG-../src/onmainwindow.cpp:3374> Continue normal X2Go session [...] x2go-DEBUG-../src/sshprocess.cpp:387> Starting tunnel via SshProcess object 2: "localhost":57842 -> "localhost":58842 [...] x2go-DEBUG-../src/sshmasterconnection.cpp:2065> Executing remote: "bash -l -c 'echo \"X2GODATABEGIN:1790db9f-7b15-48ca-9eec-7596bdb1cccf\"; export PATH=\"/usr/local/bin:/usr/bin:/bin\";export TERM=\"dumb\"; X2GODPI=141 X2GO_XINERAMA=no x2gostartagent 800x600 adsl 16m-jpeg-9 unix-kde-depth_24 us auto 1 D startfluxbox both; echo \"X2GODATAEND:1790db9f-7b15-48ca-9eec-7596bdb1cccf\";'" x2go-DEBUG-../src/onmainwindow.cpp:6142> "Starting NX proxy, command: nxproxy -S nx/nx,options=/home/user/.x2go/S-poker-50-1768844727_stDstartfluxbox_dp24/options:50" [...] x2go-DEBUG-../src/onmainwindow.cpp:6618> Proxy wrote on stderr: "\nNXPROXY - Version 3.5.99.23\n\nCopyright (c) 2001, 2011 NoMachine[...] Info: Connecting to remote host 'localhost:58842'.\n Info: Connected to remote proxy on FD#5.\n" So it seems ssh connection gets established, login is OK, `nxstartagent` is executed fine, and `nxproxy` also starts without errors. but then 2go-DEBUG-../src/sshprocess.cpp:109> New TCP connection. x2go-DEBUG-../src/sshprocess.cpp:114> New socket: 21 x2go-DEBUG-../src/onmainwindow.cpp:11659> "Searching proxy window: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:13278> "Searching window with title: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/sshmasterconnection.cpp:1977> Creating new channel. x2go-DEBUG-../src/sshmasterconnection.cpp:1990> New channel:0x7f5b580102e0 x2go-DEBUG-../src/sshmasterconnection.cpp:1994> Forwarding parameters: from remote ("localhost":57842) to local ("localhost":35710) x2go-DEBUG-../src/sshmasterconnection.cpp:2028> Temporary session port after config file parse: 57842 x2go-DEBUG-../src/sshmasterconnection.cpp:2032> Temporary session host after config file parse: localhost x2go-DEBUG-../src/onmainwindow.cpp:11659> "Searching proxy window: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:13278> "Searching window with title: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:11659> "Searching proxy window: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:13278> "Searching window with title: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:11659> "Searching proxy window: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:13278> "Searching window with title: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" [...] x2go-DEBUG-../src/onmainwindow.cpp:6618> Proxy wrote on stderr: "Info: Aborting the procedure due to signal '15'.\nSession: Session terminated at 'Mon Jan 19 19:46:53 2026'.\n" x2go-DEBUG-../src/onmainwindow.cpp:6475> Deleting Proxy. x2go-DEBUG-../src/onmainwindow.cpp:6520> Waiting for proxy to exit. x2go-DEBUG-../src/onmainwindow.cpp:6544> Checking exit status. x2go-DEBUG-../src/sshprocess.cpp:199> Executing remote command via SshProcess object 3: "x2gocmdexitmessage nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/sshprocess.cpp:213> this=SshProcess(0x55f9bbed6c50) Running masterCon->addChannelConnection(this, '"475b1d25-5fe0-4e44-abcc-dea30df785f1"', '"bash -l -c 'echo \"X2GODATABEGIN:475b1d25-5fe0-4e44-abcc-dea30df785f1\"; export PATH=\"/usr/local/bin:/usr/bin:/bin\";export TERM=\"dumb\"; x2gocmdexitmessage nass-50-1768844727_stDstartfluxbox_dp24; echo \""'); x2go-DEBUG-../src/sshmasterconnection.cpp:1810> Locking SSH channel connection MUTEX. x2go-DEBUG-../src/sshmasterconnection.cpp:2055> "ssh_channel_open_forward failed": "No channel request of this type from server" x2go-DEBUG-../src/sshmasterconnection.cpp:2187> "ssh_channel_write failed": "Remote channel is closed" then it tries to resume x2go-DEBUG-../src/sshmasterconnection.cpp:2065> Executing remote: "bash -l -c 'echo \"X2GODATABEGIN:a6aca35a-a72c-4453-96b1-0a2e1b49dfcb\"; export PATH=\"/usr/local/bin:/usr/bin:/bin\";export TERM=\"dumb\"; x2goresume-session nass-50-1768844727_stDstartfluxbox_dp24 800x600 adsl 16m-jpeg-9 us auto 1 both no; echo \"X2GODATAEND:a6aca35a-a72c-4453-96b1-0a2e1b49dfcb\";'" x2go-DEBUG-../src/sshmasterconnection.cpp:2071> "ssh_channel_open_session failed": "Socket error: Success" x2go-DEBUG-../src/onmainwindow.cpp:11659> "Searching proxy window: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:13278> "Searching window with title: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/sshprocess.cpp:478> I/O error: "ssh_channel_open_forward failed."" - No channel request of this type from server" (2). x2go-DEBUG-../src/sshprocess.cpp:478> I/O error: "ssh_channel_write failed."" - Remote channel is closed" (2). x2go-DEBUG-../src/sshprocess.cpp:478> I/O error: "ssh_channel_open_session failed."" - Received SSH_MSG_DISCONNECT: 2:oclose packet referred to nonexistent channel 0" (3). x2go-DEBUG-../src/sshprocess.cpp:478> I/O error: "ssh_channel_open_session failed."" - Socket error: Success" (4). x2go-DEBUG-../src/onmainwindow.cpp:11659> "Searching proxy window: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:13278> "Searching window with title: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:11659> "Searching proxy window: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" x2go-DEBUG-../src/onmainwindow.cpp:13278> "Searching window with title: X2GO-nass-50-1768844727_stDstartfluxbox_dp24" and afterwards I get the last 2 messages in an endless loop. No desktop window pops up. I am also very confused about the "ssh_channel_open_session failed": "Socket error: Success" I have not found any information about how to enable debug output in the server side (only on the client side) and the current messages do not give me a clear view as to what is wrong. Do you have any idea which way I should look next? Thank you in advance for your help.

2 6

Lubuntu session with X2Go
by Kalle Tuulos 03 Nov '25

03 Nov '25

Hello all My computer runs Lubuntu 24.04. When I use it locally, these sessions are available: "Lubuntu", "LXQt Desktop" and "Openbox". The "Lubuntu" session is the nicest of these. The "LXQt Desktop" is very basic and clean, it does not have the same themes etc as the "Lubuntu" session has. Has someone managed to initiate a "Lubuntu" session over X2Go, as there is no ready-made "Lubuntu" option in the Session type list? I have tried to create my own wrapper script, which would export the "DESKTOP_SESSION" variable as "Lubuntu" before calling startlxqt, but this did not do the trick, the session is still the plain LXQt. Thanks Kalle

1 0

X2Go Sponsorship Drive - Sunday, September 21, 2025 (World Gratitude Day)
by Stefan Baur 20 Sep '25

20 Sep '25

Dear $ALL X2Go could desperately need your help once more - our funding, especially for events, is running critically low - and tomorrow (September 21st, 2025), all one-time donations made via betterplace.org to our project(s) will be matched by 100%, until the platform-wide matching budget of 100 000 EUR is used up. (Recurring donations, donations via external donation forms, partner platforms, and fundraising campaigns are excluded.) Donations of up to and including 50 EUR will be matched 100%. For donations over 50 Euro, a fixed amount of 50 EUR will be added. To donate directly towards X2Go's event budget, kindly follow this link: <https://www.betterplace.org/en/projects/131360?wirwunder=235> To donate towards X2Go's infrastructure budget, X2Go in general, or X2Go's umbrella organization, orca e.V., please visit the X2Go Wiki start page and follow the donation links there: <https://wiki.x2go.org/doku.php> It would be really cool if you could send some $$$/€€€/£££/¥¥¥ our way, so we can keep advocating for X2Go and free remote desktop/remote application projects in general. We can accept donations via PayPal, Google Pay, Credit Card, Direct Debit, and wire transfer. Best of all, donations towards X2Go (and orca e.V., our umbrella org) are usually tax deductible for German tax subjects. If times are rough for you and you can't afford to donate, don't feel bad! You can also help us by forwarding this announcement to whomever you seem fit - e.g. your local Linux user group, your social media followers, etc. If you're on Twitter, you can retweet and like the following to help: <https://twitter.com/farbenstau/status/1969374099920052370> (English) <https://twitter.com/farbenstau/status/1969373118343893230> (German) If you're on BlueSky, you can reskeet and like the following to help: <https://bsky.app/profile/farbenstau.bsky.social/post/3lzbe2cjtns2z> (English) <https://bsky.app/profile/farbenstau.bsky.social/post/3lzbdrem3o22z> (German) And on Mastodon, you can like and boost the following to help: <https://infosec.exchange/@farbenstau/115236560460087046> (English) <https://infosec.exchange/@farbenstau/115236545421024392> (German) Feel free to copy the text and links of these messages to any social media platform that you are using. Kind Regards, Stefan Baur (with his X2Go's Event Planner hat on) -- 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

1 0

OpenGL support?
by Brian 24 Aug '25

24 Aug '25

Hello, Long-time x2go user, just now decided to chase this problem I've been having for a couple years. Server is x2goserver 4.1.0.6-0x2go1+git20230818.1994+12.main.1 on Debian 12.8. Client is X2Go Client v. 4.1.2.2 (Qt -4.8.6) on Windows 10. I am using "single application" mode along with uLauncher to create a mostly-seamless remote X experience. Unfortunately, if I launch any application that attempts to create an OpenGL context, x2goserver crashes instantly. I cannot even run "glxinfo" within the x2go session, although I can use a direct SSH terminal to run it in indirect render mode against the x2go display. Doing so gives the output in the included text file. This stops me from doing anything with any applications that require accelerated 3D graphics, such as FreeCAD, KiCAD, and a variety of games. It's not so bad that I can't run a game; that would be a terrible experience. But it is bad that x2goserver completely crashes. Should this work at all? I guess x2goserver shouldn't crash, in any case. I see what look like relevant core dumps in journalctl, but I don't know how to gather that up to provide here. What debugging information do I need to provide? Thanks, -Brian

2 1

Configure alternate ssh client config file???
by mike＠musicplace.com 24 Jul '25

24 Jul '25

I've added some configuration options to my personal ".ssh/config" client configuration on my linux client which are newer than the libssh file used by x2go. Specifically, the "Tag" feature, which turns out to be really useful to me. However, x2go gives "Failed to process system configuration files" error. Testing confirms the problem is with the new options in the ssh config file. My Question: Is there a way to provide options to the ssh command issued by x2go? Specifically of course I'm thinking of the "-F <configfile>" option that specifies an alternative per-user configuration file. Thanks in advance, Mike

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