x2go-dev May 2019

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88 discussions

Bug#340: x2go fails under Ubuntu 13.10
by Dick Kniep 18 Jun '19

18 Jun '19

package: x2goclient Although filed against x2goclient, the same error occurs with pyhoca-cli The session fails to start and the logs contains the following messages: NXPROXY - Version 3.5.0 Copyright (C) 2001, 2011 NoMachine. See http://www.nomachine.com/ for more information. Info: Proxy running in client mode with pid '6253'. Session: Starting session at 'Thu Nov 14 17:05:08 2013'. Loop: PANIC! Can't determine the location of the X display socket. Error: Can't determine the location of the X display socket. Loop: PANIC! Error 2 'No such file or directory' checking '/tmp/.X11-unix'. Error: Error 2 'No such file or directory' checking '/tmp/.X11-unix'. Session: Session terminated at 'Thu Nov 14 17:05:08 2013'. Met vriendelijke groet, Dick Kniep Lindix BV tel. 036-5215580 mob. 06-50991858

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Bug in sshproxy handling
by Ulrich Sibiller 16 Jun '19

16 Jun '19

Hi, some time ago I have successfully set up the x2goclient 4.1.0.0 for Windows to access some Linux machines via an ssh security gateway. It worked fine. Yesterday I wanted to use that connection with x2gclient 4.1.2.0 and it failed. Today I have tracked this down a bit more and can report this information: - it works with 4.1.0.0 - it stops working with 4.1.1.1 or newer - the session configuration looks like this: - Server: - Host: destination host behind the gateway - Use proxy server for ssh connection - Proxy: - Proxy type: ssh - Proxy host: gateway - Proxy port: 22 - use same user as for x2go server - The connection interactively asks for the password of the gateway and fails directly after entering it. The gateway is setup like this: 1. ssh <user>@gateway 2. run one of two valid commands. Any other command will immediately abort the connection to the gateway. The main allowed command is ssh to a number of defined hosts. The other command is irrelevant here. Here's some log: (invalid command) ------------------------------------ $ ssh user@gateway Password: [entering my secure password from password generator] Last login: Thu May 16 15:30:02 2019 from [CENSORED] Enter command: echo test Connection to gateway closed. ------------------------------------ Here's some log: (valid command) ------------------------------------ $ ssh user@gateway Password: [entering my secure password from password generator] Last login: Thu May 16 16:08:59 2019 from [CENSORED] Enter command: ssh desthost key_from_blob: remaining bytes in key blob 36 ssh-keysign not enabled in /usr/pkg/etc/ssh/ssh_config ssh_keysign: no reply key_sign failed Last login: Tue Apr 30 16:37:30 2019 from CENSORED [Prompt on desthost] $ ------------------------------------ Working debug log (4.1.0.0): ----------------------------------------------------------- x2go-DEBUG-../src/onmainwindow.cpp:2860> Starting new ssh connection to server:"desthost":"22" krbLogin: false x2go-DEBUG-../src/sshmasterconnection.cpp:175> SshMasterConnection, host "desthost"port 22user "username"useproxy trueproxyserver "gateway"proxyport 22 x2go-DEBUG-../src/sshmasterconnection.cpp:212> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:216> SshMasterConnection, instance SshMasterConnection(0x318fb40) created. x2go-DEBUG-../src/sshmasterconnection.cpp:452> SshMasterConnection, instance SshMasterConnection(0x318fb40) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:456> proxyserver: "gateway"proxyport: 22proxylogin: "username" x2go-DEBUG-../src/sshmasterconnection.cpp:175> SshMasterConnection, host "gateway"port 22user "username"useproxy falseproxyserver ""proxyport 0 x2go-DEBUG-../src/sshmasterconnection.cpp:212> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:216> SshMasterConnection, instance SshMasterConnection(0x318fbf8) created. x2go-DEBUG-../src/sshmasterconnection.cpp:452> SshMasterConnection, instance SshMasterConnection(0x318fbf8) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:488> libssh not initialized yet. Initializing. x2go-DEBUG-../src/sshmasterconnection.cpp:532> Setting SSH directory to "C:/Users/xxx/ssh" x2go-DEBUG-../src/sshmasterconnection.cpp:799> cserverAuth x2go-DEBUG-../src/sshmasterconnection.cpp:814> state: 1 x2go-DEBUG-../src/sshmasterconnection.cpp:650> Setting SSH directory to "C:/Users/xxx/ssh" x2go-DEBUG-../src/sshmasterconnection.cpp:989> Challenge authentication requested. x2go-DEBUG-../src/sshmasterconnection.cpp:867> Have prompts: 1 x2go-DEBUG-../src/sshmasterconnection.cpp:873> Prompt[0]: |Password: | x2go-DEBUG-../src/sshmasterconnection.cpp:879> Password request x2go-DEBUG-../src/sshmasterconnection.cpp:867> Have prompts: 0 x2go-DEBUG-../src/sshmasterconnection.cpp:950> Challenge authentication OK. x2go-DEBUG-../src/sshmasterconnection.cpp:664> User authentication OK. x2go-DEBUG-../src/sshmasterconnection.cpp:224> SSH proxy connected. ----------------------------------------------------------- Non-working debug log (4.1.1.1): ----------------------------------------------------------- x2go-DEBUG-../src/sshmasterconnection.cpp:175> SshMasterConnection, host "desthost"; port 22; user "username"; useproxy true; proxyserver "gateway"; proxyport 22 x2go-DEBUG-../src/sshmasterconnection.cpp:248> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:252> SshMasterConnection, instance SshMasterConnection(0x35aed70) created. x2go-DEBUG-../src/sshmasterconnection.cpp:520> SshMasterConnection, instance SshMasterConnection(0x35aed70) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:524> proxyserver: "gateway"; proxyport: 22; proxylogin: "username" x2go-DEBUG-../src/sshmasterconnection.cpp:175> SshMasterConnection, host "gateway"; port 22; user "username"; useproxy false; proxyserver ""; proxyport 0 x2go-DEBUG-../src/sshmasterconnection.cpp:248> Starting SSH connection without Kerberos authentication. x2go-DEBUG-../src/sshmasterconnection.cpp:252> SshMasterConnection, instance SshMasterConnection(0x3543230) created. x2go-DEBUG-../src/sshmasterconnection.cpp:520> SshMasterConnection, instance SshMasterConnection(0x3543230) entering thread. x2go-DEBUG-../src/sshmasterconnection.cpp:592> Setting SSH directory to C:/Users/xxx/ssh x2go-DEBUG-../src/sshmasterconnection.cpp:840> Session port before config file parse: 22 x2go-DEBUG-../src/sshmasterconnection.cpp:850> Session port after config file parse: 22 x2go-DEBUG-../src/sshmasterconnection.cpp:915> Session port before config file parse (part 2): 22 x2go-DEBUG-../src/sshmasterconnection.cpp:925> Session port after config file parse (part 2): 22 x2go-DEBUG-../src/sshmasterconnection.cpp:950> cserverAuth x2go-DEBUG-../src/sshmasterconnection.cpp:991> state: 1 x2go-DEBUG-../src/sshmasterconnection.cpp:711> Setting SSH directory to C:/Users/xxx/ssh x2go-DEBUG-../src/sshmasterconnection.cpp:1263> Challenge authentication requested. x2go-DEBUG-../src/sshmasterconnection.cpp:1132> Have prompts: 1 x2go-DEBUG-../src/sshmasterconnection.cpp:1138> Prompt[0]: |Password: | x2go-DEBUG-../src/sshmasterconnection.cpp:1144> Password request x2go-DEBUG-../src/sshmasterconnection.cpp:1132> Have prompts: 0 x2go-DEBUG-../src/sshmasterconnection.cpp:1226> Challenge authentication OK. x2go-DEBUG-../src/sshmasterconnection.cpp:726> User authentication OK. x2go-DEBUG-../src/sshmasterconnection.cpp:740> Login Check - Failed x2go-DEBUG-../src/sshmasterconnection.cpp:459> SSH proxy interaction finished x2go-DEBUG-../src/sshmasterconnection.cpp:802> SshMasterConnection, instance SshMasterConnection(0x35aed70) waiting for thread to finish. x2go-DEBUG-../src/sshmasterconnection.cpp:806> SshMasterConnection, instance SshMasterConnection(0x35aed70) thread finished. x2go-DEBUG-../src/sshmasterconnection.cpp:813> SshMasterConnection, instance SshMasterConnection(0x35aed70) finished destructor. ----------------------------------------------------------- In the non-working case we see "Login Check - Failed", the rest of the log looks the same. I think that login check is issuing a command on the proxy to check if the proxy is working ("echo LOGIN OK"). And due to the nature of our gateway (see above) this fails, because it is an invalid command. Unfortunately I don't really see if this assumption is correct because I have no access to the gateway logs and the x2goclient logs do not contain any information _why_ the login check failed. I have tried getting some gateway logs but I have not yet gotten anything. Is there anything I can do to bypass that login check? Uli

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Fedora X2Go repos down?
by Robert Kudyba 06 Jun '19

06 Jun '19

Been seeing these errors from def update for the past few nights: Failed to synchronize cache for repo 'x2go-nightly-fedora' Failed to synchronize cache for repo 'x2go-extras-fedora' Ignoring repositories: x2go-nightly-fedora, x2go-extras-fedora

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Bug#1390: x2go server openGL errors are printed in high volume at less than a millisecond time-scale to the log file
by Piotr Balwierz 28 May '19

28 May '19

Package: x2goserver Version: 4.1.0.3-4 Debian Buster OpenGL error messages from gl_surface_qt.cpp (qtwebengine likely) are printed on 0.01 of a millisecond time scale (i.e. 10^5 messages per second) to a log file. Currently my log file is 16 TB in size. This is a error log file from a single session, because https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=923 is resolved. $ls -la ~/.xsession-x2go* -rw------- 1 user users 17557623775232 May 2 23:40 .xsession-x2go-mamut-errors -rw------- 1 user users 38176 Jun 18 2018 .xsession-x2go-mamut-errors.old The content of the file is extremely boring: [...] [51916:52005:0422/215628.936583:ERROR:gl_surface_qt.cpp(296)] eglCreatePbufferSurface failed and surfaceless context not available [51916:52005:0422/215628.936597:ERROR:gl_surface_qt.cpp(303)] Requested OpenGL implementation is not supported. Implementation: 0 [51916:52005:0422/215628.936612:ERROR:gl_surface_qt.cpp(296)] eglCreatePbufferSurface failed and surfaceless context not available [51916:52005:0422/215628.936627:ERROR:gl_surface_qt.cpp(303)] Requested OpenGL implementation is not supported. Implementation: 0 [51916:52005:0422/215628.936642:ERROR:gl_surface_qt.cpp(296)] eglCreatePbufferSurface failed and surfaceless context not available [51916:52005:0422/215628.936656:ERROR:gl_surface_qt.cpp(303)] Requested OpenGL implementation is not supported. Implementation: 0 [...] (ad infinitum) I was definitely running Rstudio desktop in x2go session, but don't know if it was generating these messages. Expected behaviour: Too quickly appearing messages from the same process should not end up in the log file. systemd-journald if I am correct has such a feature. I am not reporting it to qtwebengine or Rstudio right now. Will do if encouraged in your comments. Regards, Piotr

2 1

Bug#1249: fixed: numlock not working with x2goclient
by Jens Reyer 16 May '19

16 May '19

Hi, we had the same issue here, using the Windows x2go-client 4.0.5.2 (Qt 4.8.6). Solved with the current Windows Client from https://code.x2go.org/releases/binary-win32/x2goclient/releases/4.1.2.0-201…. Greets

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Re: [X2Go-Dev] Bug#1376: Arithmetic exception error reading variable: Division by zero git20190114.1758
by Mihai Moldovan 15 May '19

15 May '19

* On 3/14/19 2:20 PM, Robert Kudyba wrote: > I'm not seeing the Keyboard/Configure keyboard settings in a Mac like I do on > Windows. Is it hidden in some sub-menu? It's not available on macOS at all, since macOS is very special. The keyboard settings are synchronized using an xmodmap timer, the X.Org rules are not touched at all. Were they, stuff would just blow up. This is not a limitation of X2Go, but the way the X11/Quartz keyboard synchronization works with XQuartz for some reason. It's always set to pc104/us/null/null (or some variant of this), even if the actual layout is something entirely different. Mihai

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Bug#1387: Menus of applications open in the wrong display (single application mode, two displays)
by Aki Ketolainen 09 May '19

09 May '19

Package: x2goclient Version: 4.1.2.0 I have a two display setup, with my laptop on the left and an external display on the right. I'm using the single application mode to open a xfterm4 terminal. When I first open the x2go session, the menus of the xfterm4 terminal work correct. But if I suspend the session and then later resume it, the menus of the xfterm4 terminal open on the wrong display, on my laptop's display, while the xfterm4 terminal is on the external display. If I then try to select the menus of the xfterm4 terminal with my mouse, I can not select the menu items. I can select them if I open the menus with my keyboard shortcuts. If I move the xfterm4 terminal all the way to the left side of the laptop display, the menus of the xfterm4 terminal show in the correct way. I found an existing bug report about a similar problem: https://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=417 The bug can also be reproduced by using the Linux x2go client running on the MATE desktop. Best regards, Aki

5 6

Pull-Request?
by Ulrich Sibiller 06 May '19

06 May '19

Hi, I can access the git repos on code.x2go.org. But I have not found anything that describes the pull request/review process. So where should I send pull-requests for x2go-server? Uli

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x2go-dev May 2019