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Ubuntu Directions to fix qt.qpa.xcb: X server does not support XInput 2?
by James Bowery 10 Oct '20

10 Oct '20

Looking up qt.qpa.xcb: X server does not support XInput 2 I discovered https://community.rstudio.com/t/x2go-and-rstudio/29704/5 which linked to https://wiki.x2go.org/doku.php/wiki:development:glx-xlib-workaround but following the directions for Ubuntu, I get: E: You must put some 'source' URIs in your sources.list Moreover, the directions are for Ubuntu 14 and we're on 20, so I'm not even sure the directions are up to date if, indeed, the problem with x2go still exists after all this time.

2 1

Disconnect Acts Like CTRL-s Press
by James Bowery 09 Oct '20

09 Oct '20

If I lose my internet connection, it seems to, in effect, press CTRL-s on the remote terminal window. This is most frustrating as I will frequently leave a process running over night only to discover in the morning that it has paused execution. Is there anyway to prevent this from happening?

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Reconnection results in Major opcode of failed request: 88 (X_FreeColors)
by James Bowery 08 Oct '20

08 Oct '20

After connection is restored, a program that had, during the outage, plotted a graph, fails to show the graph on the x2go client with this message: X Error of failed request: BadAccess (attempt to access private resource denied) Major opcode of failed request: 88 (X_FreeColors) However, rerunning the program in the same terminal window succeeds.

2 1

Session immediately terminates after login
by Uwe Böhm 06 Oct '20

06 Oct '20

Hi, I'm not able to establish a graphical user session. All the time the session immediately terminates after login :-( In the LOG I can't get a hint, what's possible is going wrong. Kind regards! UweB LOG is: Info: Proxy running in server mode with pid '7256'. Session: Starting session at 'Mon Oct 5 23:07:01 2020'. Info: Using errors file '/home/uweb/.x2go/S-uweb-50-1601932018_stDXFCE_dp24/sessions'. Info: Using stats file '/home/uweb/.x2go/S-50/stats'. Loop: WARNING! Overriding auxiliary X11 port with new value '1'. Warning: Overriding auxiliary X11 port with new value '1'. Info: Using abstract X11 socket in kernel namespace for accessing DISPLAY=:0. Info: Connecting to remote host 'localhost:32328'. Info: Connected to remote proxy on FD#5. Loop: WARNING! Disabling NX delta compression. Loop: WARNING! Disabling use of NX persistent cache. Info: Connection with remote proxy completed. Loop: WARNING! Unrecognized session type 'unix-kde-depth_24'. Assuming agent session. Warning: Unrecognized session type 'unix-kde-depth_24'. Assuming agent session. Info: Using LAN link parameters 1536/24/1/0. Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_24'. Info: Not using NX delta compression. Info: Not using ZLIB data compression. Info: Not using ZLIB stream compression. Info: Not using a persistent cache. Info: Forwarding X11 connections to display ':0'. Info: Forwarding auxiliary X11 connections to display ':0'. Session: Session started at 'Mon Oct 5 23:07:01 2020'. Info: Established X server connection. Info: Using shared memory parameters 0/0K.

2 1

new x2go version fail to connect
by gian sisal 05 Oct '20

05 Oct '20

Hi everyone, I just updated my X2Go windows client versione from 4.1.2.0 to 4.1.2.2, I saw a change in session preferences: under session type there was "connect to local desktop", now I see"X2Go/X11 Desktop Sharing". Unfortunately now I'm no longer able to connect to my remote systems. It seems like the software crashes and closes when I try to login. I think I downgrade again to 4.1.2.0. however: is it normal? Am I missing something? Thanks in advance. Best Regards. Gf

2 1

Desktop sharing using XFCE Desktop
by James Roy 05 Oct '20

05 Oct '20

Hi, I am using Ubuntu Desktop Server with XFCE Desktop Environment, and able to access using X2GO client. but other person want to access my screen , he is unable to access it, He can access the Server with New Session, but screen sharing does not seem possible in X2go . Could you please help me to share a screen with multiple X2go users ? Roy.

2 1

No input accepted on subsequest sessions
by May Doušak 03 Oct '20

03 Oct '20

Hi, I use x2go on a few computers (both servers and clients) and have problem on one of them. I'm connecting to xfce (if that matters) on ubuntu 20.04. On my first connection (i.e. when xfce4-session starts), everything works OK. When I disconnect (close x2go window) and reconnect to the same session (no matter what I use - "xdcmp session", "X2go desktop sharing --> resume", etc), I can only "view" what's on the screen and no input is accepted from keyboard or mouse. It doesn't even detect mouse movement (if I hover over something, it doesn't work). Funny enough, I can resize window size and it words as expected (it increases resolution). If, however, I open a new session or kill existing xfce4-session (using ssh), the new connection accepts input without any problems - until I close the connection and reconnect, that is. Does anyone have an idea what could be done to make it work? Thanks, May

1 0

x2go much slower than vnc?
by Johann Petrak 01 Oct '20

01 Oct '20

I just learned about x2go and wanted to try it out for a remote session to a host I have so far done using vnc serving a xfce desktop. But sadly my observation is that x2go is *much* slower and less responsive than VNC. For example just moving around a window on the desktop (same size) works smoothly with VNC but is done in a very coarse fashion in x2go with the window jumping around slowly and with considerable delay. Both connections go over the same ssh tunnel, same kind of LAN so all other things the same, the problem must lie with x2go or the x2go settings. Is there any explanation for this or anything that could be changed to increase the speed of x2go? Is x2go not *supposed* to be faster than VNC? I have experimented a bit with the connection speed and compression settings but that did not change anything either.

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x2go disconnects on paste (openSUSE Tumbleweed)
by Tristan Miller 01 Oct '20

01 Oct '20

Dear all, Today I updated from openSUSE Tumbleweed 20200708 to 20200724, and now whenever I try to paste the clipboard contents into a single application launched remotely via x2go, the x2go session disconnects and terminates. Does anyone else here have the same problem, or know what the culprit might be? Regards, Tristan

2 6

Losing mouse click ability and keyboard events
by Nicolas Ecarnot 01 Oct '20

01 Oct '20

Hello, First post, thank you for welcoming me here. From an Ubuntu 20.04 client to an Ubuntu 20.04 server, the default repository install is working out of the box, all is nice. But from times to times (random but around 15 min. ), with no obvious reasons, I'm losing the ability to click : - the display is still fine - the mouse cursor is still drawn - when moving the cursor, it is reacting to the windows borders, URL links, any sensitive parts of the display - but no mouse button click seems to be sent - no keyboard stroke seems to be sent either When killing the client and connecting again, the display is still fine, but the same problem remains. I tried to run the x2go client from a terminal to have a look at what could be wrong, but nothing obvious came to my mind. I tried to have a look at the server's log but I found none. I don't know if I could run the client and/or the server with additional verbosity to try to get more hints? Does that look like something familiar? Thank you -- Nicolas ECARNOT

3 6

Centralised Authentication through Ldap
by James Roy 30 Sep '20

30 Sep '20

Hi team, I just used X2go to access Desktop via username and password. Is there a way to authnticate users via Ldap or Active Directory. ? Roy.

2 1

X2GO file sharing windows to ubuntu
by ruprocket＠yahoo.com 26 Sep '20

26 Sep '20

Hi all, I'm trying to share my files from my personal laptop to the X2GO one with the file-sharing options given in the GUI, I'm able to view it in home/username/media/disk, but when I open it, it says permission denied.I've tried changing the directory permissions of the directory but to no avail. When I see permissions, -rwxrwxrwx 1 ubuntu ubuntu 96 Sep 26 11:14 'E_lammps (sshfs-disk-lxde)' When I open it, Error opening directory "/tmp/.x2go-ubuntu/media/disk/_cygdrive_E_lammps" : Permission denied Kindly advise Best RegardsRupayan

1 0

x2goclient goes 100% CPU
by Lorenzo Iannuzzi 24 Sep '20

24 Sep '20

I read of similar issues in the past, but none seems like mine. If I leave x2goclient running and I don't use my PC for a while (like half an hour or more) when I return I find sometimes it runs at 100% CPU. Killing and restarting it solves the issue, but usually it occurs some time for my machine to reply to input when it happens. I have a Debian 10 (x2goclient 4.1.2.1) and I connect to the server (still Debian 10) by a Forticlient VPN and a Gnome session. I could provide more information, if you told me how. -- Lorenzo

3 6

Lag in RStudio desktop in nested ssh sessions (or qsub -I) MacOS clients
by Scott Wood 24 Sep '20

24 Sep '20

Hi folks, Multi-layered one here. We have x2goserver (4.1.0.4-0.0x2go1.0.git20200228.1815.heuler.el7) available on a (CentOS7) login node of our HPC cluster for folks to submit jobs from. If they start an x2go client session from a Mac to our login node, submit interactive jobs with X11 tunnelling enabled (or even just ssh -X directly to an execution node) and run RStudio (1.1.463) desktop from within that second host, there is an un-usable lag in their session. If they type in the console, it can take up to 10 seconds to register and display the keystroke. No errors, everything works, it just isn't very responsive. Linux x2go clients are fine. Windows x2go clients are fine. I know that's a lot of layers they're going through but I'm at a loss for identifying which layer is the issue. Any troubleshooting tips? Anyone out there experiencing similar symptoms? Cheers

3 5

info security patches released
by gian sisal 22 Sep '20

22 Sep '20

Hi everyone, I tried to search for any security patch(es) for X2go server, maybe I watched in wrong places, are there any security patch(es) released for X2go server? Hope I've explained. Thanks in advance for your help. Best regards G

2 1

x2gi broker, wsgi
by Gil Laycock 18 Sep '20

18 Sep '20

Hi, I'm trying to set up an x2go broker using x2gobroker-wsgi, and it seems to be almost working - but fails at the last hurdle. I have a pool of x2go servers running (that work fine individually); and listed in a pool in x2gobroker-sessionprofiles.conf (They do require an ssh proxy, which I specified in the sessionprofiles) I have a central pgsql db successfully recording sessions for the x2go servers. On the broker server, from the command line: * using x2gobroker-testauth succeeds * the load balancer seems to be working fine * command line running x2gobroker --task listsessions shows the session configured in x2gobroker-sessionprofiles.conf I have the x2gobroker-wsgi set up as a virtualhost. With debugging turned on, and most authentication disabled (so I'm expecting to have to log in first to the broker multiple times), I can visit in a browser to https://broker.my.domain/plain/ (also to .../plain/inifile ) and it just says "Access granted". If I use x2goclient, I try x2goclient --broker-url=https://broker.my.domain/plain --debug In x2goclient I then get a login screen, followed by a pop-up error message: "Host requires authentication"; the debug messages say: Broker HTTP request failed with error: "Host requires authentication" The apache log file just shows successful connections. I was expecting to get a choice among the pool of servers... I feel like I am missing something small but critical. -- Gilbert Laycock GnuPG key: 35B6A094 gilbert(a)laycock.org.uk http://www.laycock.org.uk/

1 1

x2go by verified developers for macOS
by Felix Kretschmer 15 Sep '20

15 Sep '20

Hi @all, I love to use x2go for remote connections from remote work to company-internal server machines. Since I am using a macOS machine to get my stuff done I am not able to use this anymore because company policies only allow Apple notarized applications to be installed on the machines. Are there any plans to notarize the x2go client for macOS? Best, Felix -- Felix Kretschmer E-Mail: fk(a)hubspace.de

1 0

How to disable File Sharing functionality
by Ricardo Barrera Vazquez 14 Sep '20

14 Sep '20

Hi, I want to know how I can disable the file sharing functionality. I guess this has to be done on server side since the client is free to do whatever he wants with the x2go client. I'm dealing with a specific use case in which the client should not be able to share files (in/out the server) for security reasons therefore the only required functionality is the remote desktop and that's it. Note: I confirmed my mailing subscription, would be great if you can accept my question. Thank you.

2 1

Accepting RDP certs in Linux
by Mike Tarbox 10 Sep '20

10 Sep '20

Attempting to log into a remote Windows 10 machine using RDP in POP_OS x2go, and I am unable to accept the security certificate. Any ideas? I can log into the Win10 machine using RDP if I am using another Windows machine.

1 0

x2goclient resumes session with wrong X-Server options
by Maarten Boekhold 01 Sep '20

01 Sep '20

(resending in plain text format) Hi all, Windows 10, x2goclient 4.1.2.2 When resuming a "paused" x2Go session, x2goclient is using the wrong X-Server settings. I have configured my x2goclient with the following settings for X.Org Server settings: **X.Org Server settings** [X] use custom X-Server Executable: C:/Program Files (x86)/x2goclient/VcXsrv/vcxsrv.exe [ ] start X-Server on X2Go Client start Window mode: -screen 0 %wx%h -notrayicon -clipboard -keyhook \ -nowinkill -nopn -silent-dup-error Fullscreen mode: -fullscreen -notrayicon -clipboard -keyhook \ -nowinkill -nopn -silent-dup-error Single application: -multiwindow -notrayicon -clipboard \ -keyhook -nowinkill -nopn -silent-dup-error Whole display: -nodecoration -notrayicon -clipboard -keyhook \ -nopn -silent-dup-error -screen 0 @ My x2goclient session is configured as: **Session preferences: Input/Output** [ ] Fullscreen [ ] Custom Width (greyed out 3696) Height (greyed out 2160) [X] Use whole display [ ] Maximum available Display: 2 When I start a new x2Go session, it correctly runs the X-Server with the "Whole display" command: "C:\Program Files (x86)\x2goclient\VcXsrv\vcxsrv.exe" \ -nodecoration -notrayicon -clipboard -keyhook -nowinkill \ -nopn -silent-dup-error screen 0 @2 :0 But if I then "pause" this session and reconnect, x2goclient uses the "Window mode" command line options instead: "C:\Program Files (x86)\x2goclient\VcXsrv\vcxsrv.exe" \ -screen 3696x2160 -notrayicon -clipboard -keyhook \ -nowinkill -nopn -silent-dup-error :0 This is really annoying. I suspect this has something to do with the code around line 4442 in onmainwindow.cpp, but I've not been able to figure out the exact details yet. I've tried to debug this by running x2goclient.debug.exe --debug, but there's an issue here. When running the debug version, the "Use whole display" option is not available in the session settings tab: **Session Input/Output with x2goclient.debug.exe --debug** [ ] Fullscreen [ ] Custom Width (greyed out 3696) Height (greyed out 2160) [ ] Maximum available See the "Use whole display" option missing in front of the "Maximum available" radio box. It's almost as if the debug build included in this distribution is of an older x2goclient version (but it shows the correct version number in the About dialog). I hope that based on the provided information a fix can be created for this issue? Regards, Maarten

1 0

x2goclient resumes session with wrong X-Server options
by Maarten Boekhold 01 Sep '20

01 Sep '20

Hi all, Windows 10, x2goclient 4.1.2.2 When resuming a "paused" x2Go session, x2goclient is using the wrong X-Server settings. I have configured my x2goclient with the following settings for X.Org Server settings: _*X.Org Server settings: *_ [X] use custom X-Server Executable: C:/Program Files (x86)/x2goclient/VcXsrv/vcxsrv.exe [_] start X-Server on X2Go Client start Window mode: -screen 0 %wx%h -notrayicon -clipboard -keyhook -nowinkill -nopn -silent-dup-error Fullscreen mode: -fullscreen -notrayicon -clipboard -keyhook -nowinkill -nopn -silent-dup-error Single application: -multiwindow -notrayicon -clipboard -keyhook -nowinkill -nopn -silent-dup-error Whole display: -nodecoration -notrayicon -clipboard -keyhook -nopn -silent-dup-error -screen 0 @ My x2goclient *session* is configured as: _*Session preferences: Input/Output*_ [_] Fullscreen [_] Custom Width (greyed out 3696) Height (greyed out 2160) [X] Use whole display [_] Maximum available Display: 2 When I start a *new* x2Go session, it correctly runs the X-Server with the "Whole display" command: " C:\Program Files (x86)\x2goclient\VcXsrv\vcxsrv.exe" -nodecoration notrayicon clipboard keyhook nowinkill nopn silent-dup-error screen 0 @2 :0 But if I then "*pause*" this session and *reconnect*, x2goclient uses the "Window mode" command line options instead: " C:\Program Files (x86)\x2goclient\VcXsrv\vcxsrv.exe" -screen 3696x2160 notrayicon clipboard keyhook nowinkill nopn silent-dup-error :0 This is really annoying. I suspect this has something to do with the code around line 4442 in onmainwindow.cpp <https://code.x2go.org/gitweb?p=x2goclient.git;a=blob;f=src/onmainwindow.cpp…>, but I've not been able to figure out the exact details yet. I've tried to debug this by running x2goclient.debug.exe --debug, but there's an issue here. When running the debug version, the "Use whole display" option is not available in the session settings tab: _*Session Input/Output with x2goclient.debug.exe --debug: *_ [_] Fullscreen [_] Custom Width (greyed out 3696) Height (greyed out 2160) [_] Maximum available See the "Use whole display" option missing in front of the "Maximum available" radio box. It's almost as if the debug build included in this distribution is of an older x2goclient version (but it shows the correct version number in the About dialog). I hope that based on the provided information a fix can be created for this issue? Regards, Maarten

1 0

gdk error
by richard lucassen 25 Aug '20

25 Aug '20

When starting "geeqie" (an image viewer) I get this in an x2go session on all 3 servers I run. Debian Bullseye (testing), sysV, Windowmaker as wm. libx2go-config-perl 4.1.0.3-5 libx2go-log-perl 4.1.0.3-5 libx2go-server-db-perl 4.1.0.3-5 libx2go-server-perl 4.1.0.3-5 libx2go-utils-perl 4.1.0.3-5 x2goserver 4.1.0.3-5 x2goserver-common 4.1.0.3-5 x2goserver-x2goagent 4.1.0.3-5 (geeqie:27441): Gdk-ERROR **: 10:09:44.818: The program 'geeqie' received an X Window System error. This probably reflects a bug in the program. The error was 'BadLength (poly request too large or internal Xlib length erro'. (Details: serial 300 error_code 16 request_code 143 (GLX) minor_code 1) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) Trace/breakpoint trap Is this an x2go issue? R. -- richard lucassen http://contact.xaq.nl/

2 2

Sticky (repeated) arrows using x
by Tamir Einy 23 Aug '20

23 Aug '20

Hi, I have a sticky keys problem, when I connect from windows 10 pc to a linux server using x2Go version (4.1.2.0), connection type: XFCE. Then when I click shift + arrow right in order to mark a specific text and then release the keyboard the text is still being marked until the end of it. Also I cannot stop the operation, I need to restart the session. It happens using all editors, and using all arrows. Unfortunately, the latest version doesn't work, as it fails to connect to the server. Any suggestions? Thanks, Tamir

4 8

x2go session broker
by James Roy 22 Aug '20

22 Aug '20

Hi, I installed Session Broker , and connected with listed session profiles. I am using xfce Desktop Environment. But getting issues, whenever I access xfce desktop it opens a new Desktop, instead it should open existing Desktop. is it possible to use same Desktop Display that currently running ? Thanks in Advance.

1 0

copy/paste issues
by Neal Becker 20 Aug '20

20 Aug '20

I (still) have a strange problem with copy/paste on my setup. When x2go client is active, copy/paste stops working *locally *(nevermind if it works between local and remote). Client is using kde, server is mate. Any ideas? -- *Those who don't understand recursion are doomed to repeat it*

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