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Stop pxe-Server
by Olaf Staubus 01 Dec '21

01 Dec '21

Hello! How can I stop the pxe-server (only the pxe function)? I have installed a new Linux server with x2go and would like to test this parallel to the old Linux x2go server, but the new one does not accept the old pxe server. Since at that time I installed the x2go server and the pxe server together on one, I only want to be able to stop / start the pxe-function of the old one to test the new one. Would be great if someone can help. Greetings, Olaf

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connection failed.
by Ilaria Sani 19 Nov '21

19 Nov '21

Dear All, I am new to X2go and to this emailing list. I have used it successfully for a couple of weeks. Then, once, I got the following error message while attempting login (windows10): Failed to start X2Go Agent session with ID xxxxxxx. X2Go Agent terminated unexpectedly. Aborting session startup. I tried to 1. restart PC 2. unistall-reinstall 3. delete session-recreate session 4. exit putty-re-entering I have no more attempts to do. I have used other clients before, and for one of those this sometimes would happen. What I was doing was to -kill geometry in putty and then re-do one. Is there something similar I can do here? I tried to visualize the Archive of this mailing list but I could not find a way to search previous posts. I am lost. Any help would be highly appreciated. Thanks!!! Ilaria ---------------------------------------------------------------- Ilaria Sani, PhD Research Associate, Vuilleumier Lab Campus Biotech, Chemin de Mines 9, 1202 Geneva, CH Phone: +41 223 790 383

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Unable to start a desktop
by Papoteur 16 Nov '21

16 Nov '21

Hello, I'm trying to repair the packaging of x2go in Mageia. It was functional in Mageia 7, but this is no more the case in Mageia 8 or cauldron (development version). I have tried 2 clients: x2goclient 4.1.2.2 and pyhoca-gui 0.6.1.1 packaged for Mageia 8. For the server, in a virtualbox VM, I tried to install the master version of x2goserver; through make && make install. I had to change the rights to add write credential on /var/lib/x2go and /var/lib/x2go/x2go_session I use also nxagent-3.5.99.25-1.mga8 and nxproxy-3.5.99.25-1.mga8 packaged for Mageia 8. Thus I have linked xgoagent to /usr/lib64/nx/bin/nxagent Using pyhoca, I can establish the session with the VM, either with the main user or with a test user, using password. But when I try to launch the desktop or a single application like Terminal, this fails. In the journal of the server, i get: sshd[96864]: Accepted password for test from 192.168.1.14 port 35740 ssh2 systemd-logind[683]: [🡕] New session c25 of user test. systemd[1]: Started Session c25 of user test. sshd[96864]: pam_unix(sshd:session): session opened for user test by (uid=0) /usr/local/bin/x2gostartagent[97691]: successfully started X2Go Agent session with ID test-93-1636213441_stDLXQt_dp24 sshd[96871]: error: connect_to 127.0.0.1 port 51346: failed. sshd[96871]: error: connect_to 127.0.0.1 port 51346: failed. In the same time, I get: this log on the client side: Info: Proxy running in server mode with pid '2878627'. Session: Starting session at 'Sat Nov 6 16:46:21 2021'. Info: Using errors file '/home/yves/.x2go/S-test-93-1636213441_stDLXQt_dp24/session.err'. Info: Using stats file '/home/yves/.x2go/S-93/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 '127.0.0.1:51346'. Info: Connected to remote proxy on FD#5. Loop: PANIC! The remote NX proxy closed the connection. Error: The remote NX proxy closed the connection. Loop: PANIC! Failure negotiating the session in stage '7'. Error: Failure negotiating the session in stage '7'. Loop: PANIC! Wrong version or invalid session authentication cookie. Error: Wrong version or invalid session authentication cookie. Session: Terminating session at 'Sat Nov 6 16:46:29 2021'. Session: Session terminated at 'Sat Nov 6 16:46:29 2021'. What surprise me is that the client uses 127.0.0.1 as remote server address. I have tried to open all ports on the server, in case where the firewall would be implied, but without more success. I don't understand what goes wrong and what to do to debug or restore the normal behavior.

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X2Go server on Fedora 35 KDE
by Michael Eager 08 Nov '21

08 Nov '21

When I try to connect to a F35 LXD VM using x2goclient, I get an error "Cannot Exec startkde". This can be fixed by either running "sudo ln -s /usr/bin/startplasma-x11 /usr/bin/startkde" in the VM or changing the command in x2goclient. When a screen is displayed, it is completely black, with an arrow cursor. I've seen a couple bug reports about black screen, but none seem to be relevant. -- Michael Eager

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X2Go on openSUSE
by Peter Keller 08 Nov '21

08 Nov '21

Dear list, The instructions for installing X2Go on openSUSE systems on the wiki page at <https://wiki.x2go.org/doku.php/wiki:repositories:suse> seem very outdated. The X2Go repositories only provide binaries up to openSUSE 15.1. These still worked on 15.2 in my hands, but at the current openSUSE release (15.3) support for Qt4 has been dropped and the X2Go repository binaries will no longer work on this distribution (unless it has been upgraded from 15.2, and the Qt4 libraries retained). The correct location for X2Go on SUSE systems now seems to be https://download.opensuse.org/repositories/X11:/RemoteDesktop:/x2go/<distro-version>/ as mentioned in this forum thread: <https://forums.opensuse.org/showthread.php/555520-x2go-client-shared-librar…>. Perhaps someone with write access to the wiki could update the SUSE page? Regards, P.

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Unable to start a desktop
by Papoteur 06 Nov '21

06 Nov '21

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X11 fonts
by Michael Eager 04 Nov '21

04 Nov '21

I have been trying to run a legacy Motif application on a Fedora 33 VM, connecting using X2Go. With respect to using X11 core fonts, the Motif app works like the X11 xfontsel application. Connecting to the VM using X2Go, I tried to install the liberation fonts, but was unsuccessful. I installed them system-wide and in a local .fonts directory, but xfontsel did not see them. I updated the font search path to include the liberation fonts directory using "xset -fp", and this appeared to work ("xset q" showed the updated path), running "fc-cache" would list the liberation font directories, but xfontsel did not see the fonts. It appeared that running "fc-cache" reset the font search directory to the default, without the liberation fonts. I found a comment that with X2Go fonts need to be installed on both the client and server. The liberation fonts are on both. When I connect to the VM using "ssh -X" or "vncviewer" I am able to install X11 fonts and xfontsel shows them. (And the legacy Motif application sees them as well.) Can anyone tell me how to install fonts so that applications running under X2Go will see them? -- Michael Eager

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How to reduce fonts size?
by nicolas.x2go＠ecarnot.net 28 Oct '21

28 Oct '21

Hello, Though I read https://www.mail-archive.com/x2go-user@lists.x2go.org/msg03049.html and when using 'Single application' or 'Published applications', and running Thunderbird (91.1.2) from a 4.1.0.3-5 x2go server running on an Ubuntu 21.10, to my XUbuntu 21.10 desktop, whatever setting I'm trying to use about the DPI has absolutely no effect on the fonts size in the published Thunderbird. They are significantly bigger, and don't change either when raising nor lowering the DPI setting. Is this something I could check somewhere in the logs, or does anyone has any advice about it? Thank you. -- Nicolas

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x2goagent segfaulting on client connect
by Eric Shell 25 Oct '21

25 Oct '21

I have a CentOS 7.9 system on which X2Go was previously working perfectly, but which is now broken. It broke after a typical yum update but I am not sure what changed to break things and I would like some help debugging and resolving this issue. I should mention that as part of my troubleshooting I have begun using NVIDIA kmod drivers from the ELRepo instead of ones installed from NVIDIA's .run file. The behavior I'm seeing in every failed connection produces the following log entries. The system has both XFCE and MATE installed and both produce the same output. - Oct 19 10:21:29 c113256 /usr/bin/x2goruncommand: launching session with Xsession-x2go mechanism, using STARTUP="mate-session" Oct 19 10:21:29 c113256 /usr/bin/x2goruncommand: dbus wrapper available as /usr/bin/dbus-run-session Oct 19 10:21:30 c113256 kernel: resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000c4000-0x000c7fff window] Oct 19 10:21:30 c113256 kernel: caller os_map_kernel_space.part.6+0x95/0xc0 [nvidia] mapping multiple BARs Oct 19 10:21:31 c113256 kernel: x2goagent[58376]: segfault at 48 ip 0000555fbee349ab sp 00007ffe380702a0 error 4 in nxagent[555fbecd6000+439000] Oct 19 10:21:31 c113256 abrt-hook-ccpp: Process 58376 (nxagent) of user 1001 killed by SIGSEGV - dumping core - Interestingly, x2goagent does not segfault if I have the X2Go client run /bin/xclock. The window opens without issue. /bin/firefox fails. /bin/glxgears also fails. Is this related to GL/GLX? How can I obtain more detailed information? Thank you! -- Eric Shell PBSci Technical Staff eshell(a)ucsc.edu 831 459 4919

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screensaver
by richard lucassen 17 Oct '21

17 Oct '21

Hello list, After some minutes of inactivity the x2go session switches to a black screen. I run WindowMaker in a session (custom mode), but there is no active screensaver AFAICS. Is this probably x2go behaviour? R. -- richard lucassen http://contact.xaq.nl/

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