x2go-user July 2023

x2go-user@lists.x2go.org

5 participants
7 discussions

MFA support in X2go?
by Grigory Shamov 28 Sep '23

28 Sep '23

HI All, Is there any X2go client around that would support connecting to SSH with a multi-factor auth like Duo or Yubikey enabled? -- Grigory Shamov Site Lead / HPC Specialist University of Manitoba and DRI Alliance Canada

5 6

x2gokdrive doesn't like connection interruption
by Neal Becker 03 Aug '23

03 Aug '23

client and server both fedora f38. x2gokdriveclient-0.0.0.1-1.fc38.x86_64 I find that when connection gets interrupted 3 bad things can happen: 1. client uses 100% cpu 2. Trying to reconnect, screen starts to open and immediately closes. Then on next attempt a new session starts, old session is lost. 3. With client connected, closing laptop lid should initiate sleep. Instead client runs 100% cpu and machine doesn't sleep.

2 1

Session with a single application
by Olaf 29 Jul '23

29 Jul '23

Hello! How to configure a session with a single application? "Session Type": "Application" -> command "thunar" and/or "/usr/bin/thunar" in the right box => Application starts but freezes immediately (or at least doesn't respond to input/mouse). No matter whether browser, mail, Libreoffice, pcmanfm,... Greeting, Olaf

1 0

Can't use ssh-agent / ECDSA key file for passwordless login [MacOS client]
by Aaron 28 Jul '23

28 Jul '23

Hi all, I'm having trouble getting the x2go client to authenticate with passwordless login options other than kerberos. Specifically, I've tried auto login (via SSH agent) and supplying the path to my OpenSSH private key (which is an ECDSA key). Kerberos works for me as long (as I have a valid ticket), but I want to connect using the the ECDSA key, for reasons I'll explain below. I suspect that the ECDSA format key is not supported by my current client version, but if someone could confirm (or deny) that, I would appreciate it; and if it's possible that it might work with a more up to date client build / build against an updated LibSSH or something, that would be good to know too. I don't currently have the wherewithal to build my own copy of the client for MacOS, but that might provide some incentive for me to try sometime soon. Some background: I'm using x2go at work to connect from my Macbook Pro to a Linux server. To connect using Kerberos, I need a valid ticket, and to get a valid ticket, I need to first connect to the corporate VPN. However, I don't need to connect to the VPN in order to use SSH (from a terminal), thanks to a proxy software (a ProxyCommand in my ~/.ssh/config). If I already have a valid Kerberos ticket, the X2go client will connect using Kerberos, without VPN (that is, the ProxyCommand seems to work). However, I don't want to have to connect to the VPN just to renew my kerberos ticket when ssh itself will work using the ECDSA key I obtain. (It will also work using my password, but that is a temporary measure... my employer is phasing out password-based ssh in favor of requiring U2F). To be clear, the proxy command doesn't seem to be the issue; I encounter the same problem when I'm connected to the VPN. I've attached two files (with usernames and hostnames substituted), one the output of ssh -vvv (succes) and the other the output from /Applications/x2goclient.app/Contents/MacOS/x2goclient --debug (failed). Both were run while connected to the VPN. The x2go session was set up with "Try auto login" checked, Kerberos 5 unchecked, and "Use RSA/DSA key" left blank (the log also shows that the contents of my ssh agent were valid in the terminal). Trying after supplying a path to my ~/.ssh/id_ecdsa file under "Use RSA/DSA key" has the same result.

1 0

x2gokdrive screen goes mostly black
by Orion Poplawski 20 Jul '23

20 Jul '23

One of our users is seeing an issue using x2gokdrive where most of the desktop goes black. Can slowly restore by forcing things to repaint by moving windows. Host is EL8 - x2goserver 4.1.0.4, kdrive 0.0.0.1 Client is Windows x2goclient-4.1.2.3-ba65703-kdrclient-a3134d6 KDE desktop Any ideas what might be causing this? -- Orion Poplawski IT Systems Manager 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane orion(a)nwra.com Boulder, CO 80301 https://www.nwra.com/

1 0

FYI - dbus issues with tcsh on EL8
by Orion Poplawski 17 Jul '23

17 Jul '23

The dbus-x11 packages' /etc/profile.d/ssh-x-forwarding.csh file will start a new dbus-deamon that gets killed when the user disconnects from ssh causing problems on re-connect. I've reported the issue with a fix here: https://bugzilla.redhat.com/show_bug.cgi?id=2223420 Thankfully it seems the the dbus-x11 package dropped these scripts in later releases. -- Orion Poplawski IT Systems Manager 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane orion(a)nwra.com Boulder, CO 80301 https://www.nwra.com/

1 0

X.Org server did not launch correctly
by Yun-Fei Liu 02 Jul '23

02 Jul '23

Hello, I'm using Windows 11 Home (Version 22H2, OS build 22621.1848) on a Microsoft Surface Pro 7+. I have the latest version of X2Go client (v4.1.2.2, Qt-4.8.6) I was able to connect to our lab server using X2Go on the week of June 19th. However, when I tried to log in today (July 2nd), I got an error message "X.Org server did not launch correctly after 4 tries". There is no such problem with my other MSI laptop which is running Windows 10. It would be great if anyone knows how to solve this error message. Thank you. Yun-Fei Liu

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x2go-user July 2023