Hi

I recompiled nx-libs (based on the current Debian 2:3.5.99.27-2 code, NXAGENT 
Version 3.5.99.27). I hope this works, tell me if I need to switch to the 
Arctica code). There I enabled TEST and DEBUG and installed those packages.
Attached is a session.log (Mate, with LibreCalc autostarted, where I first type 
in a cell, then do a successful ctrl+c, ctrl+v, then a failed one and then a 
successful one.


results for different clipboard settings:

Clipboard bidirectional between client and server: first, and then every second 
attempt work

Clipboard client to server: half of the attempts fail, no clear pattern which 
ones fail

Clipboard server to client: everything works

Clipboard between server and client disabled: everything works




Thanks!


> Ulrich Sibiller <ulrich.sibil...@gmail.com> hat am 13. März 2025 um 15:15 
> geschrieben:
> 
>     Hi,
> 
>     disabling clipboard via these setting will effectively suppress 
> communication between the client and the server regarding clipboard. All 
> clipboard communication will then happen between libreoffice and the nxagent 
> on the server side. No remote communication involved, not slowing down 
> anything.
> 
>     So chances are that your communication is too slow. I _think_ playing 
> around with the other clipboard options will show that it works with one of 
> the "copy from X to Y" options and not with the other. Can you confirm?
> 
>     Uli
> 
> 
>     On Thu, Mar 13, 2025 at 3:03 PM Jens Reyer <jens.re...@leberrohstoffe.com 
> mailto:jens.re...@leberrohstoffe.com > wrote:
> 
>         > > 
> >         I did the lightweight test on the client side, my local PC at work.
> > 
> > 
> >         And indeed, if I open a Mate x2go session to localhost's IP on the 
> > Linuxmint 22.1 Mate client (so server and client are the same, just 
> > different users) I can NOT reproduce the issue.
> > 
> > 
> >         Now I connected from another client/PC to my PC (so what's usually 
> > a client acted now as remote server): the issue still exists but only in 
> > about HALF of the cases, while it previously existed consistently in every 
> > case after the first try.
> > 
> > 
> >         In the original tests the server's were VMs (Proxmox PVE).
> > 
> > 
> > 
> >         Tests with connection settings:
> > 
> > 
> >         Previously I had the issue while connecting to the reomote server 
> > with connection LAN (here at work) and probably ADSL (from home). Now I 
> > tested the same remote server with MODEM: the issue still exists.
> > 
> > 
> >         Then I changed the clipboard from bi-directional (German: 
> > "Zwischenablage-Modus: Kopieren und Einfügen in beide Richtungen möglich" 
> > to disabled ("Zwischenablage komplett deaktivieren"). The issue is NOT 
> > reproducible anymore.
> > 
> >         So now we've found a workaround, good :)
> > 
> > 
> >         Setting the keyboard from auto-detect to "Model pc105, layout de" 
> > didn't help.
> > 
> > 
> >         Are there any other settings I should test?
> > 
> >         I'll recompile nxagent later.
> > 
> > 
> > 
> >             > > > Ulrich Sibiller <ulrich.sibil...@gmail.com 
> > mailto:ulrich.sibil...@gmail.com > hat am 13. März 2025 um 13:08 
> > geschrieben:
> > > 
> > >             Hi,
> > > 
> > >             just to be sure: have you done the lightweight test on the 
> > > server side or the client side?
> > > 
> > >             Assuming you have done the test on the server side. This 
> > > indicates that the problem is somehow tied to the connection. Can you 
> > > please check if different connection settings in x2go lead to different 
> > > results?
> > > 
> > >             You don't need to compile x2goserver, just nxagent. Compiling 
> > > is done like this:
> > >             1. checkout nx-libs from ArcticaProject on github
> > >             2. run make
> > > 
> > >             If this fails you probably need to install more dependencies. 
> > > If it succeeds, you need to repeat that after changing these lines in 
> > > nx-X11/programs/Xserver/hw/nxagent/Clipboard.c:
> > > 
> > >             #undef TEST -> #define TEST
> > >             #undef DEBUG -> #define DEBUG
> > > 
> > >             After running make again you should find a new nxagent in 
> > > nx-X11/programs/Xserver
> > > 
> > >             Uli
> > > 
> > > 
> > > 
> > >             On Thu, Mar 13, 2025 at 11:45 AM Jens Reyer 
> > > <jens.re...@leberrohstoffe.com mailto:jens.re...@leberrohstoffe.com > 
> > > wrote:
> > > 
> > >                 > > > >                 Sorry for yet another PS:
> > > >                 Yes, I may recompile a test x2goserver, if you tell me 
> > > > what changes/options you need.
> > > > 
> > > > 
> > > >                     > > > > > Jens Reyer <jens.re...@leberrohstoffe.com 
> > > > mailto:jens.re...@leberrohstoffe.com > hat am 13. März 2025 um 11:42 
> > > > geschrieben:
> > > > > 
> > > > > 
> > > > >                     I could NOT reproduce the problem with your 
> > > > > lightweight test on Linuxmint 22.1 Mate:
> > > > > 
> > > > >                     nxagent -ac :55
> > > > > 
> > > > >                     DISPLAY=:55 twm
> > > > > 
> > > > >                     DISPLAY=:55 soffice
> > > > > 
> > > > >                     --> OK (except maybe one fail, but that was 
> > > > > probably human failure)
> > > > > 
> > > > > 
> > > > >                     For the previous non-lightweight-test in twm on 
> > > > > the remote Debian Trixie server I started in that x2go/twm session a 
> > > > > terminal and from there soffice, since I couldn't find a direct 
> > > > > Libreoffice launcher. So I tried this for the lightweight test - 
> > > > > still works:
> > > > > 
> > > > >                     nxagent -ac :55
> > > > > 
> > > > >                     DISPLAY=:55 twm
> > > > > 
> > > > >                     DISPLAY=:55 xterm
> > > > > 
> > > > >                     In xterm: soffice
> > > > > 
> > > > >                     --> OK
> > > > > 
> > > > > 
> > > > >                     I agree there must be something specific with 
> > > > > newer Libreoffice versions, since I neither found this with other 
> > > > > applications, nor with libreoffice 7.3.7. But as just discovered this 
> > > > > is only an issue with (remote?) X2Go sessions.
> > > > > 
> > > > > 
> > > > >                         > > > > > > Ulrich Sibiller 
> > > > > <ulrich.sibil...@gmail.com mailto:ulrich.sibil...@gmail.com > hat am 
> > > > > 13. März 2025 um 10:52 geschrieben:
> > > > > > 
> > > > > >                         Ok, thanks for the information. The nxagent 
> > > > > > is the current version, that's ok. Also I think we take out the 
> > > > > > client from the equation.
> > > > > > 
> > > > > >                         I have just tried your reproducer with 
> > > > > > LibreOffice 6.4.7.2 on RockyLinux 8.10 in a rootless NX session 
> > > > > > without any problems. Maybe this is tied to newer LibreOffice 
> > > > > > versions?
> > > > > > 
> > > > > >                         You can also do a very lightweight test 
> > > > > > locally like this:
> > > > > >                         1. run nxagent -ac :55
> > > > > >                         2. DISPLAY=:55 openbox (or any other WM)
> > > > > >                         3. DISPLAY=:55 soffice -> will open soffice 
> > > > > > in the nx window.
> > > > > > 
> > > > > >                         Is the problem showing up then, too?
> > > > > > 
> > > > > >                         Maybe we need more debugging information 
> > > > > > which would require to recompile nxagent on your server system.
> > > > > > 
> > > > > > 
> > > > > >                         Uli
> > > > > > 
> > > > > >                         On Wed, Mar 12, 2025 at 3:00 PM Ulrich 
> > > > > > Sibiller <ulrich.sibil...@gmail.com 
> > > > > > mailto:ulrich.sibil...@gmail.com > wrote:
> > > > > > 
> > > > > >                             > > > > > > >                           
> > > > > >   Sorry, x2goserver-x2goagent is only a wrapper. The real 
> > > > > > functionality sits in the nxagent package, and that's the version I 
> > > > > > need. Alternatively you can run /usr/bin/x2goagent -version on the 
> > > > > > server.
> > > > > > > 
> > > > > > >                             KDE includes a clipboard manager. 
> > > > > > > What DE are you using?
> > > > > > > 
> > > > > > >                             Does the problem also show up when 
> > > > > > > you are using a very simple window manager like twm or fvwm2 or 
> > > > > > > openbox?
> > > > > > > 
> > > > > > >                             Uli
> > > > > > > 
> > > > > > >                             On Wed, Mar 12, 2025 at 1:55 PM Jens 
> > > > > > > Reyer <jens.re...@leberrohstoffe.com 
> > > > > > > mailto:jens.re...@leberrohstoffe.com > wrote:
> > > > > > > 
> > > > > > >                                 > > > > > > > > 
> > > > > > > >                                 Hi,
> > > > > > > > 
> > > > > > > >                                 thanks for the quick answer.
> > > > > > > > 
> > > > > > > > 
> > > > > > > >                                 x2goagent 4.1.0.6, as provided 
> > > > > > > > by the distributions,
> > > > > > > > 
> > > > > > > >                                 so on the affected Debian 
> > > > > > > > Trixie/Sid Mate server:
> > > > > > > > 
> > > > > > > >                                 x2goserver-x2goagent 
> > > > > > > > 4.1.0.6-1.1+b1
> > > > > > > > 
> > > > > > > >                                 and on LinuxMint 22.1 Mate:
> > > > > > > > 
> > > > > > > >                                 x2goserver-x2goagent 
> > > > > > > > 4.1.0.6-1.1build1
> > > > > > > > 
> > > > > > > > 
> > > > > > > >                                 To the best of my knowledge 
> > > > > > > > there's no clipboard manager running on the systems, neither on 
> > > > > > > > the 2 tested servers nor the 3 clients.
> > > > > > > > 
> > > > > > > >                                 Most systems were just set up 
> > > > > > > > recently by myself, and I never used or even heard about 
> > > > > > > > clipboardmanagers before. Neither clipman nor xclipboard are 
> > > > > > > > installed.
> > > > > > > > 
> > > > > > > > 
> > > > > > > >                                 Greets
> > > > > > > > 
> > > > > > > >                                 jre
> > > > > > > > 
> > > > > > > > 
> > > > > > > >                                     > > > > > > > > > Ulrich 
> > > > > > > > Sibiller <ulrich.sibil...@gmail.com 
> > > > > > > > mailto:ulrich.sibil...@gmail.com > hat am 12. März 2025 um 
> > > > > > > > 11:13 geschrieben:
> > > > > > > > > 
> > > > > > > > >                                     Hi,
> > > > > > > > > 
> > > > > > > > >                                     please let us know the 
> > > > > > > > > version of nxagent (x2goagent) you are using. Also ensure 
> > > > > > > > > that there’s no clipboard manager running (on both sides!).
> > > > > > > > > 
> > > > > > > > >                                     Uli
> > > > > > > > > 
> > > > > > > > >                                     On Wed, Mar 12, 2025 at 
> > > > > > > > > 11:11 AM Jens Reyer <jens.re...@leberrohstoffe.com 
> > > > > > > > > mailto:jens.re...@leberrohstoffe.com > wrote:
> > > > > > > > > 
> > > > > > > > >                                         > > > > > > > > > > 
> > > > > > > > > >                                         Package: x2goserver
> > > > > > > > > > 
> > > > > > > > > >                                         Version: 
> > > > > > > > > > 4.1.0.6-1.1+b1
> > > > > > > > > > 
> > > > > > > > > >                                         Severity: normal
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         Hi,
> > > > > > > > > > 
> > > > > > > > > >                                         since an 
> > > > > > > > > > update/reinstallation copy&pasting in Libreoffice in X2Go 
> > > > > > > > > > always needs to be repeated, only the very first run works 
> > > > > > > > > > instantly.
> > > > > > > > > > 
> > > > > > > > > >                                         We found this issue 
> > > > > > > > > > only when using X2Go, but not when working directly on the 
> > > > > > > > > > same machine.
> > > > > > > > > > 
> > > > > > > > > >                                         It happens only in 
> > > > > > > > > > Libreoffice (Calc and Writer), but not in e.g. Firefox or 
> > > > > > > > > > an editor.
> > > > > > > > > > 
> > > > > > > > > >                                         Starting 
> > > > > > > > > > Libreoffice in safe mode (soffice --safe-mode) does not 
> > > > > > > > > > help.
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         Steps to reproduce:
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         Start Libreoffice
> > > > > > > > > > 
> > > > > > > > > >                                         ctrl+c, ctrl+v OK
> > > > > > > > > > 
> > > > > > > > > >                                         ctrl+c, ctrl+v FAIL 
> > > > > > > > > > (nothing is inserted)
> > > > > > > > > > 
> > > > > > > > > >                                         ctrl+c, ctrl+v FAIL 
> > > > > > > > > > (nothing is inserted)
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         Start Libreoffice
> > > > > > > > > > 
> > > > > > > > > >                                         right-click > copy, 
> > > > > > > > > > right-click > paste OK
> > > > > > > > > > 
> > > > > > > > > >                                         right-click > copy, 
> > > > > > > > > > right-click > paste FAIL (Libreoffice Calc asks where to 
> > > > > > > > > > shift the cells, but then nothing is inserted)
> > > > > > > > > > 
> > > > > > > > > >                                         right-click > copy, 
> > > > > > > > > > right-click > paste FAIL (Libreoffice Calc asks where to 
> > > > > > > > > > shift the cells, but then nothing is inserted)
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         Workaround:
> > > > > > > > > > 
> > > > > > > > > >                                         ctrl+c, ctrl+v OK
> > > > > > > > > > 
> > > > > > > > > >                                         ctrl+c, ctrl+c, 
> > > > > > > > > > ctrl+v OK
> > > > > > > > > > 
> > > > > > > > > >                                         ctrl+c, ctrl+c, 
> > > > > > > > > > ctrl+v OK
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         Tested affected 
> > > > > > > > > > servers:
> > > > > > > > > > 
> > > > > > > > > >                                         Debian Trixie/Sid 
> > > > > > > > > > Mate (libreoffice 4:24.8.5-2 amd64, x2goserver 
> > > > > > > > > > 4.1.0.6-1.1+b1)
> > > > > > > > > > 
> > > > > > > > > >                                         LinuxMint 22.1 Mate 
> > > > > > > > > > (libreoffice 4:24.2.7-0ubuntu0.24.04.2, x2goserver 
> > > > > > > > > > 4.1.0.6-1.1build1)
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         Previously not 
> > > > > > > > > > affected server:
> > > > > > > > > > 
> > > > > > > > > >                                         LinuxMint 21.3 Mate 
> > > > > > > > > > (libreoffice 1:7.3.7-0ubuntu0.22.04.8, x2goserver 4.1.0.3-5)
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         Tested Clients:
> > > > > > > > > > 
> > > > > > > > > >                                         Debian Trixie 
> > > > > > > > > > (x2goclient 4.1.2.3-3)
> > > > > > > > > > 
> > > > > > > > > >                                         Linuxmint 22.1 
> > > > > > > > > > (x2goclient 4.1.2.3-1build3)
> > > > > > > > > > 
> > > > > > > > > >                                         Win10 (X2GoClient 
> > > > > > > > > > 4.1.2.2), with the X.org server option "do not use primary 
> > > > > > > > > > clipboard" both checked and unchecked
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         I reported this 
> > > > > > > > > > issue only here, not with the distros or Libreoffice. 
> > > > > > > > > > Please tell me if I should otherwise or if I should provide 
> > > > > > > > > > additional info or tests.
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         My boss is willing 
> > > > > > > > > > to pay for a solution. Just contact me.
> > > > > > > > > > 
> > > > > > > > > > 
> > > > > > > > > >                                         Thanks in advance 
> > > > > > > > > > and thanks for all your work!
> > > > > > > > > > 
> > > > > > > > > >                                         Jens Reyer
> > > > > > > > > > 
> > > > > > > > > >                                         
> > > > > > > > > > _______________________________________________
> > > > > > > > > >                                         x2go-dev mailing 
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> > > > > > > > > >                                         
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> > > > > > > > > >                                         
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> > > > > > > > >                                 > > > > > > > >               
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> > > > 
> > > >             > > > 
> > >         > > 
> >     > 

Attachment: session.log.gz
Description: GNU Zip compressed data

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