NoMachine not displaying desktop

[escondido]

I’m currently using the latest free version of NoMachine for Windows 8 to connect to a few Ubuntu 16.04 (also running the latest version) remote servers. All of them work without any problems except for one server. It no longer displays the desktop. When I connect all I see is a black screen with a pop-up box saying, “A configuration error has been encountered. Please contact your administrator.” I click the OK button and it terminates the session.

I’ve tried completely removing NoMachine from the Linux server, deleting the nodes.db.backup file and reinstalling. I also then deleted every file I could find related to NoMachine and reinstalling. I still get the same error message.

I thought it might be an issue with XFCE, so I reinstalled that too, but that didn’t work. Lastly, I removed NoMachine from my windows system and reinstalled. Still no luck. I’m not exactly sure what to do at this point as I’ve run out of ideas.

Has anybody else encountered this issue before and know how to fix it?

 

[graywolf]

Please, reproduce and collect the server and node log following this: How do I collect the NoMachine log files?

Then send log to forum (at) nomachine (dot) com

[graywolf]

Is it a headless system?

It could be a misconfiguration of the desktop environment. Could you create a new user in the system and try to create remote session using her credentials?

Please raise the debug level from 6 to 7 in node.cfg and server.cfg:

SessionLogLevel 7

Keeping the old log folder could also be helpful. In node.cfg change the related option to 0:

SessionLogClean 0

[escondido]

Sorry for the late reply, I never received an email indicating a new comment. It is a headless system and works great for the past 3 months up until a few weeks ago. I sent an email with the logs back on 7/16/18, but I haven’t heard anything yet.

It’s my understanding the free version only allows root access, so I’m not entirely sure if there’s a different way to create a new user outside of giving sudo privileges.

 

 

[graywolf]

Free version does not restrict access to the root user.

By the way, could you retry with node.cfg modified as in my previuos post and send the log again?

In headless systems it could happen that video card goes into sleep mode. Try to turn off the display manager completely with systemctl stop gdm and disable the automatic start on boot with systemctl disable gdm. In that way, NoMachine will run its own display server.

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