x2go-user February 2021

x2go-user@lists.x2go.org

5 participants
11 discussions

mouse 1 cm too low
by richard lucassen 17 Apr '21

17 Apr '21

Hello list, I have run x2go for many years now without any problem. I have two different servers running Debian testing and x2go 4.1.0.3-5, multiple clients running the same OS and x2go client. I run WindowMaker both on client and servers. This has worked for many years. Weird thing: the active clicking point for the mouse is 1 cm above the mouse. Restarting client and server does not make any difference. AFAIK these x2go versions have not changed (underlying libraries might have of course). I tested this on a few clients: same problem. It make x2go almost unusable. Anyone a hint what to test and where to look for this weird issue? R. -- richard lucassen http://contact.xaq.nl/

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One application (Digikam) fails, apparently randomly
by Chris Green 02 Apr '21

02 Apr '21

Well I'm very confused now, I thought I could see a pattern but I can't. I'll report what I have discovered so far though. I'm running x2gclient 4.1.2.2 (as installed from the Ubuntu repositories) on my xubuntu 20.10 laptop. I'm running the server on my xubuntu 20.10 desktop machine, again just as installed from the Ubuntu repositories:- x2goserver: 4.1.0.3 x2goserver-common: 4.1.0.3 x2goserver-extensions: 4.1.0.3 x2goserver-fmbindings: 4.1.0.3 x2goserver-printing: 4.1.0.3 x2goserver-x2goagent: 3.5.99.24 x2goserver-xsession: 4.1.0.3 I have been trying a mix of three types of session, as follows (with results):- 1 - A small Python GUI program as a 'Single Application', this always runs without any problem at all, it just works every time. 2 - An XFCE session, this works every time and doesn't cause any major issues but it does occasionally pop-up windows in the server session as follows:- A window saying "Authentication is required to create a colour profile" and I have to enter my sudo user password. After the above pop-up I sometimes get a second one saying "Authentication is required to operate a colour managed device" The above two pop-ups only appear occasionally, usually the XFCE session just starts up and runs normally. Once I've entered my sudo password in response the session runs OK. 3 - A Digikam session as a 'Single Application', this does work sometimes but more often it appears to start OK, then xfwm4 on the *client* crashes and the Digikam session disappears even though it is still running on the desktop machine. I can't see any consistent reason for when it does work or when it doesn't work. Digikam is running from a big Appimage. Running digikam in an XFCE session running in x2go works perfectly, or at least I've not managed to crash it ever. It's only when run as a 'Single Application' that it fails. I guess I can just run Digikam in an XFCE session but I'd like to be able to just run Digikam. It's frustrating that it sometimes works but I can't see what is needed for it to work. As I said elsewhere I've run memtest on the desktop machine for two whole passes and it showed no errors. I'm happy to add debug flags to either end to see if it's possible to diagnose this. -- Chris Green

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Cant start X.Org Server
by Martti Pitkanen 01 Apr '21

01 Apr '21

Hi, I experimented different settings in my Win X2Go -client, after which I started getting "x2client Cant start X.Org Server. Please check your installation." Afre that X2Go closes. I uninstalled it and removed all references to x2go by using regedit. Any idea what else I can do? Thanks, Martti Pitkanen

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accessing windows that fall off the screen
by Michael Ashley 27 Feb '21

27 Feb '21

Hi folks, Another question for you: sometimes I reconnect to an x2go session from a computer that has a smaller display than the one that I previous connected from. The problem is that some of the windows now fall partially or fully off the display. The partial ones are usually accessible by clicking and dragging their borders until enough of them appears so that the window can be dragged back in to full view. The usual X11 keystroke/mouse combination for dragging a window isn't passed through to the x2go session, so this only works on the high-level x2go window (presumably there is a way of creating a different keystroke/mouse combination that is passed through). But for windows that fall completely off the screen, I can't see how to access them. Any ideas? I'm using xfce. Regards, Michael

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Help with broken X2go client
by Trevor Jennings 27 Feb '21

27 Feb '21

Hello, I have been using X2go client only iMac connecting to a Debian 10 linux box successfully for about a year. Recently it has stopped working. I get the following message from X2go client: NXPROXY - Version 3.5.99.20 Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder(a)phoca-gmbh.de> Copyright (c) 2014-2016 Ulrich Sibiller <uli42(a)gmx.de> Copyright (c) 2014-2016 Mihai Moldovan <ionic(a)ionic.de> Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) NXCOMP, NX protocol compression and NX extensions to this software are copyright of the aforementioned persons and companies. Redistribution and use of the present software is allowed according to terms specified in the file LICENSE.nxcomp which comes in the source distribution. All rights reserved. NOTE: This software has received contributions from various other contributors, only the core maintainers and supporters are listed as copyright holders. Please contact us, if you feel you should be listed as copyright holder, as well. NX protocol compression is derived from DXPC project. Copyright (c) 1995,1996 Brian Pane Copyright (c) 1996,1997 Zachary Vonler and Brian Pane Copyright (c) 1999 Kevin Vigor and Brian Pane Copyright (c) 2000,2003 Gian Filippo Pinzari and Brian Pane All rights reserved. See https://github.com/ArcticaProject/nx-libs for more information. Info: Proxy running in server mode with pid '9440'. Session: Starting session at 'Mon Feb 1 18:24:44 2021'. Info: Using errors file '/Users/trevorj/.x2go/S-trevorj-50-1612203882_stDXFCE_dp32/sessions'. Info: Using stats file '/Users/trevorj/.x2go/S-50/stats'. Loop: WARNING! Overriding auxiliary X11 port with new value '1'. Warning: Overriding auxiliary X11 port with new value '1'. Info: Connecting to remote host 'localhost:59616'. Info: Connected to remote proxy on FD#12. Info: Connection with remote proxy completed.. Loop: WARNING! Unrecognized session type 'unix-kde-depth_32'. Assuming agent session. Warning: Unrecognized session type 'unix-kde-depth_32'. Assuming agent session. Info: Using ADSL link parameters 1408/24/1/0. Info: Using cache parameters 4/4096KB/8192KB/8192KB. Info: Using pack method '16m-jpeg-9' with session 'unix-kde-depth_32'. Info: Using ZLIB data compression 1/1/32. Info: Using ZLIB stream compression 4/4. Info: No suitable cache file found. Info: Forwarding X11 connections to display '/private/tmp/com.apple.launchd.MNbJjztkvO/org.xquartz:0'. Info: Forwarding auxiliary X11 connections to display '/private/tmp/com.apple.launchd.MNbJjztkvO/org.xquartz:0'. Session: Session started at 'Mon Feb 1 18:24:44 2021'. Connection timeout, abortingSession: Terminating session at 'Mon Feb 1 18:25:14 2021'. Info: Waiting the cleanup timeout to complete. Session: Session terminated at 'Mon Feb 1 18:25:14 2021'. I have a MacBookAir and that still connects to the same linux box fine via X2go client. I did get a message the other day on my iMac that I could update the version of Xquartz, which I did and continued to use X2go client successfully following this for a while and then X2go client then stopped working when I tried to connect one morning. I have subsequently removed this new version of Xquartz and installed the same version as on my laptop, 2.7.11 but I still am unable to connect. I have also removed X2go client and reinstalled but still no joy. Any hints or ideas would be much appreciated. Many thanksTrevor

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nxagentReconnectFailedFonts: does anyone have a solution?
by Michael Ashley 27 Feb '21

27 Feb '21

Hi folks, Last week I connected to a long-running x2go session using a different computer than I normally do. It worked fine. But later that day when I returned to my usual computer, I ran into the bug where the session would start up, but then disconnect within about a second, with the error messages: > nxagentReconnectFailedFonts: WARNING! Font server tunneling not retrieved. > nxagentReconnectSession: WARNING! Unable to retrieve all the fonts currently in use. Missing fonts have been replaced. A google search shows that this bug was reported 7 years ago, but no solution appears to be forthcoming, apart from trying to adding fonts. But with over 1000 fonts on the server, I have no idea how to find which ones need adding. Are there any ideas out there for how to address this problem? It is certainly frustrating to be unable to connect to a running x2go session, and having to terminate it on the server. Regards, Michael

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script to automatically restart x2go client session after coming out of suspend
by Michael Ashley 26 Feb '21

26 Feb '21

Hi folks, I thought that some of you might be interested in a small script that I use to automatically restart an x2go client session after returning from suspending the client computer: #!/bin/bash while true; do pyhoca-cli -R NEWEST --link wan -g 3768x2123 --pack 16m-png-jpeg-9 user@computer & while ! wmctrl -r X2GO -e 0,0,0,3768,2123; do sleep 1; done echo sleeping sleep 10 wait done The idea is to use pyhoca-cli to handle the connection. The "wait" line waits until the pyhoca-cli subprocess ends, which happens shortly after the computer comes out of suspend. The "wmctrl" line is just to resize the window to fit my display. Change the numbers 3768x2123 to suit. The "sleep 10" I had in there while debugging to avoid runaway creation of sub-processes, which is capable of crashing the x2go server session. The nice thing about this script is that I can be up and running with the x2go client session within less than 10 seconds or so of coming out of suspend, without having to tediously interact with the x2goclient GUI. In turn, this means that there is almost no friction in suspending/resuming my desktop computer, with consequent power savings. The script could be improved by starting a new session if there is no existing one. Regards, Michael

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Re: [X2Go-User] X2GO Crash When Resizing columns in Cliosoft Sos
by Joe 26 Feb '21

26 Feb '21

Feb 23, 2021 6:49:48 PM Ulrich Sibiller <uli42(a)gmx.de>: > > Feb 23, 2021 3:00:23 PM Ulrich Sibiller <uli42(a)gmx.de>: > >> On Tue, Feb 23, 2021 at 8:20 PM Joe W <jsw140(a)hotmail.com> wrote: >>> >>> I am using a program called Cliosoft SOS. It has a window that displays in columns like an Excel file. When I resize one of the columns then my X2GO session window crashes. The start window where I pick which session to start stays running. >>> >>> There is a horizontal scroll bar to move the columns sideways. When I drag that then the X2GO window crashes. >> >> Is that program available for testing? > > I don't know. I will ask them and I will also try your debugger suggestion. The program requires quite a bit of setup before the columns are seen. > >> >>> I have attached the session log and the client debug console output showing a few of these crashes. >> >> The session log looks like a reconnect should be possible. Can you confirm? >> > > I can always reconnect after one of these crashes and see my desktop with ask the programs still running. When I do then I see that my SOS columns have been resized. > >>> Is there some way to fix this or is it a bug that I should report? >> >> It is a bug - nx should not crash. >> >>> Is there any additional information that I should gather? >> >> Well, you could try the following: >> 1. start the session as always. >> 2. start an additional ssh session to the server as the same user or >> root to the server >> 3. run pgrep x2goagent and note the resulting PID (if you have >> multiple session running you will find multiple PIDs and need to >> identify the correct one) >> 4. attach the debugger to the PID: gdb -p PID >> 5. then try to provoke the crash. If it happens the debugger should >> kick in and show a prompt. Run the "bt" in command in the debugger and >> post the output you see. >>> > > I will try this in the next few days. > >>> Anything I should ask the software developer? >> >> Well, as written above a test version that triggers the problem would help. >> >> Uli I tried your debugger suggestion. The first time it told me to run debuginfo-install nxagent-3.5.99.25-4.el7.x86_64 so I did that. Each time after I attach the debugger then my x2go window is frozen so I cannot try changing anything. When I quit the debugger then the x2go window crashes.

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Re: [X2Go-User] Cross-session copy/paste issue
by Jonah Benton 24 Feb '21

24 Feb '21

Hi Uli, Thank you- concur about images- in the past, copy-paste of them only worked within a session, not across. My workaround was to paste-save to /tmp on the host and then open saved image from another session. But nearly all copy-paste for me is text / URLs. Re versions of nxagent: Currently: [admin@localhost ~]$ dnf list installed | grep nx nx-libs.x86_64 3.5.99.26-1.fc33 @updates nxagent.x86_64 3.5.99.26-1.fc33 @updates nxproxy.x86_64 3.5.99.26-1.fc33 @updates Previously version release schedule https://www.spinics.net/lists/fedora-package-announce/msg288622.html * Fri Jun 19 2020 Orion Poplawski <orion@xxxxxxxx> - 3.5.99.24-1 - Update to 3.5.99.24 * Sat Feb 1 2020 Orion Poplawski <orion@xxxxxxxx> - 3.5.99.23-1 - Update to 3.5.99.23 * Wed Jan 29 2020 Fedora Release Engineering <releng@xxxxxxxxxxxxxxxxx> - 3.5.99.22-2 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild So I was previously running what Fedora calls 3.5.99.24. I can try to downgrade if there is an earlier 3.5.99 on Fedora 33- will that matter? Happy to give a go at a replacement build. I did just note two additional behaviors- 1. cross-session paste does *eventually* complete -copy of text 1 in session 1 -attempt to paste in session 2 -observe session 2 window freeze -switch to host window -paste into host window (success) -select and recopy in host window -switch back to session 2- paste of text 1 had completed So the paste took about 5 seconds 2. cross-session paste payload can be replaced in flight -copy of text 1 in session 1 -switch to session 2 -attempt to paste (text 1 into session 2) -observe session 2 window freeze -switch to another window in session 2 -select and copy text 2 (in another window in session 2) -switch to the session 2 window attempting to complete the original paste -note that the paste completed- but using text 2, not text 1 Thanks again! Jonah On Sun, Feb 21, 2021 at 7:59 AM Ulrich Sibiller <uli42(a)gmx.de> wrote: > Well, I am wondering how you managed to reliably copy/paste images. This > is something the current code does not support. > > Regarding the switch to non-working: you probably have updated the nxagent > package on your server. Please check what was the old version and what you > have installed now. You could try to downgrade again. But please post the > versions here anyway. > > I am still working at a massive clipboard rework which is close to being > finished (I hope...). If you are able to compile it on your own you can > test it. I can assist with instructions > > Uli > > Jonah Benton <jonah(a)jonah.com> schrieb am Sa., 20. Feb. 2021, 20:30: > >> Hi folks, >> >> Let me first say thank you to X2Go maintainers- I happened upon X2Go >> about 6 months ago when figuring out how to switch my workflow from Fedora >> VMs on MacOS to distinct desktop environments on Fedora. It is such a >> profoundly excellent tool. Thank you for your efforts. >> >> Now- to describe a problem that just cropped up, hoping someone can help >> me debug. >> >> I have been running Fedora 32 - XFCE on a Thinkpad, simultaneously >> running 7 distinct local X2Go sessions under 7 different host users. Each >> session's window resides within its own XFCE logical desktop, and I switch >> between them with the switch desktop hotkeys. X2Go sessions are configured >> to support bidirectional copy/paste, and generally it works seamlessly to >> copy text or images from apps in one session's window to another or to/from >> the host. >> >> Last night I upgraded to Fedora 33, with the requisite updates to X2Go. >> Now, copy/paste is reliably broken in one area: >> >> * from host into any session still is fine >> * from session into host still is fine >> * from a session into the same session still is fine >> * from one session into another session no longer works >> >> On failed pastes- where the copy was from one session and the paste is >> another session- when the paste recipient is a browser (Chromium, Firefox, >> whatever), sometimes the recipient browser tab temporarily locks up trying >> (and failing) to retrieve the paste material. >> >> All X2Go sessions are still configured for bi-directional copy-paste. >> >> [admin@localhost ~]$ x2goclient --version >> x2go-WARNING-1> English language requested, not loading translator. >> x2go-WARNING-1> English language requested, not loading translator. >> 4.1.2.2 >> >> [admin@localhost ~]$ x2goversion >> : 3.2.0.0 >> : 4.1.0.3 >> : 4.1.0.3 >> : 3.2.0.0 >> : 4.1.0.3 >> : 3.5.99.26 >> : 4.1.0.3 >> >> Any thoughts on tracking down the issue? >> >> Thanks again, >> >> Jonah >> >> >> >> >> _______________________________________________ >> x2go-user mailing list >> x2go-user(a)lists.x2go.org >> https://lists.x2go.org/listinfo/x2go-user >> >

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X2GO Crash When Resizing columns in Cliosoft Sos
by Joe W 23 Feb '21

23 Feb '21

I am using a program called Cliosoft SOS. It has a window that displays in columns like an Excel file. When I resize one of the columns then my X2GO session window crashes. The start window where I pick which session to start stays running. There is a horizontal scroll bar to move the columns sideways. When I drag that then the X2GO window crashes. I can resize the entire SOS window without any problems. I do not see this sort of behavior in LibreOffice Calc. I have attached the session log and the client debug console output showing a few of these crashes. My client is v. 4.1.2.2 on Windows 10. I am connecting to a CENTOS 7 system running X2GO 4.1.0.3-9 server which came from the Epel repo. Is there some way to fix this or is it a bug that I should report? Is there any additional information that I should gather? Anything I should ask the software developer?

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x2go-user February 2021