Britgirl

[Britgirl]

I just noticed a typo in the previous command I wrote, apologies for that. It should have been

sudo sed -i '' -e 's/^AcceptedAuthenticationMethods.*/AcceptedAuthenticationMethods NX-private-key/' "/Applications/NoMachine.app/Contents/Frameworks/etc/server.cfg"

[Britgirl]

Please check that you actually have sudo privileges.

Open a terminal and from CLI try to edit the file, for example with vim:

sudo vim /Applications/NoMachine.app/Contents/Frameworks/etc/server.cfg

or just use command:

sudo sed -i '' -e 's/^AcceptedAuthenticationMethods.*/AcceptedAuthenticationMethods NX-private-keytest/' "/Applications/NoMachine.app/Contents/Frameworks/etc/server.cfg"

This will change the key to:

AcceptedAuthenticationMethods NX-private-key

[Britgirl]

It’s still not clear to us what problem with the NoMachine software you are experiencing. The screenshot you attached indicates that the web server doesn’t exist, not that NoMachine is unavailable/not running. You say that this NoMachine server is installed on a dedicated machine via your cloud provider, are you able to SSH into your VM?

[Britgirl]

Hi, it sounds like a permissions issue with screen recording in macOS. Can you try re-enabling screen recording in the MacBook settings? See the following article for the steps to take: https://kb.nomachine.com/AR11Q01061

If NoMachine has already been added, please remove it and add again.

[Britgirl]

Hi, if the issue happens again, we would like to see the nxtrace. The nxtrace.log file is generated only in case of a sudden termination of any of the NoMachine programs. It’s stored in: %PROGRAMDATA%/NoMachine/var/log on Windows Vista, 7, 8, 8.1, 10. I’ve passed your suggestion on to the developers 🙂

 

[Britgirl]

Hi, thanks for letting us know know. If you also tried ‘Scale to window’ mode instead of ‘viewport’ and that didn’t help, it could be related to the GPU on your Linux host that makes available only one resolution when the monitor is not present. A dongle “tricks” the system into thinking the monitor is attached.

It’s one of the workarounds for connecting to headless hosts. See our article in the KB for reference:
https://kb.nomachine.com/AR03P00973

[Britgirl]

Hi, can you send us the server side logs of that Intel machine? We just acquired one of those Intel machines and are also testing it, so we can advise better. It would be good to compare.

These are the instructions for the logs, send them to forum[at]nomachine[dot]com with the title of this topic as the subject of your email 🙂 https://kb.nomachine.com/DT07S00243

[Britgirl]

Default settings are to not terminate, kill or remove any session that a user initiates. Please check what you have for the following server keys.

#
# Allow NX Server to terminate oldest disconnected sessions:
#
# 1: Enabled. Enable the automatic kill of the disconnected
# sessions.
#
# 0: Disabled. Disconnected sessions are never terminated.
#
# When this option is set and the maximum number of concurrent sessions
# has been reached, the server will kill the oldest disconnected sessions to
# make room for the new session.
#
#EnableAutokillSessions 0

and this:

#
# Set for how long the server has to keep alive virtual desktops in
# status disconnected. When the time is expired, the server will
# terminate virtual desktops if no user are connected there.
#
# 0: Virtual desktops in status disconnected are never terminated.
# This is the default.
#
# >0: Keep Disconnected session alive for this number
# of seconds.
#
#DisconnectedSessionExpiry 0

If they are both set to zero, tell us what NoMachine product and version you are using.

[Britgirl]

Hi, can you contact us directly at forum[at]nomachine.com and we will send you an apk package to sideload 🙂

[Britgirl]

We tested on the fly and can’t reproduce. With activegrab enabled, the Windows+3 keys are intercepted and show us the 3rd application running on the remote desktop. In our case, it’s the file explorer.

Can you start the player from a terminal instead like this?
/usr/NX/bin/nxplayer --activegrab

Attachments:

1. 

   image.png
   

[Britgirl]

Not sure what the file was that you tried to attach 🙂 If it was some kind of log, send it to forum[at]nomachine.com.

Let’s also try collecting client side logs_
– launch the NoMachine UI on the user’s computer from Programs or Menu
– click on Settings -> Player -> Security
– check Don’t delete log files on exit option
– Connect to the server and reproduce the problem.
– Compress the user’s home/.nx directory containing logs.
– Send the compressed logs archive to us using the email address above.

[Britgirl]

Try one of the Cloud Server products. Cloud Server can be used as a gateway to broker connections to desktops/machines that are behind the cloud server (desktops can be physical or virtual machines), on the corporate network. You can find more here: https://www.nomachine.com/cloud-server-family. It’s not just a gateway for your users, it also provides admins with a configuration and management interface accessible also from remote, including a web browser. You can add as many nodes as you want to any of the Cloud Server products through its admin interface. You can also use what we call “inverse add method”. This means that if a desktop node “moves” or is in DMZ, the node can be added to the Cloud Server from the node, of doing it from the cloud server, by going to Settings -> Server -> Clouds panel on the desktop node.

If you are using the free edition of NoMachine, switch to Enterprise Desktop or Workstation. Enterprise family products can be added as nodes to a Cloud Server.

See this guide which explains everything you need to know (I chose the Enterprise Cloud Server guide) https://kb.nomachine.com/DT08T00263. The full list of guides is available here: https://www.nomachine.com/support/documents.

Further resources: https://www.nomachine.com/adding-nodes-to-nomachine-cloud-server-via-the-nomachine-user-interface#inverse

[Britgirl]

We’re not aware of off-set problems, but we will investigate. Are you using the current NoMachine version, 8.11? Can you tell us the desktop environment you are running?

[Britgirl]

Hi, the zip of logs you sent us is empty. Try gathering again and resubmit.

[Britgirl]

Hi, is it possible for you to update to the latest version on the MacBook? What macOS is it? Is the NoMachine Linux server side also the latest? What Linux distro is it?

Diagnostic Reports from the macOS side would be useful:

Finder, bring up Go to Folder (Shift + Command + G) and paste ~/Library/Logs/DiagnosticReports. Submit what you have there. You can attach here or send to forum[at]nomachine[dot]com.

[Author]

Posts