NoMachine not finding hosts on LAN

[pavlos]

Linux Mint 21.3 NoMachine 9.2.18  does not find any clients.

Downgrade to 9.1.24, finds clients.

45374 45374 2025-11-06 19:19:24 251.414 NXSERVER WARNING! Process ‘/usr/NX/scripts/setup/nxserver –checkservices’ with pid ‘45391/45391’ finished with exit code 1 after 0,073 seconds.
45374 45374 2025-11-06 19:19:24 251.473 NXSERVER Process initialized with arguments ‘–startmode’.
102308 102308 2025-11-07 05:39:53 914.402 NXSERVER WARNING! Process ‘/usr/NX/scripts/setup/nxserver –checkservices’ with pid ‘102467/102467’ finished with exit code 1 after 0,078 seconds.

exit code 1 is not good.

[pavlos]

I do not see my topic split.

Had same issue, 9.2.18 does not find clients on a pc, Ubuntu Mate 24.04

Downgraded to 9.1.24, finds clients.

 

[Britgirl]

Pavlos, I’ve now split your topic off, so we can continue on this thread.

[pavlos]

Thank you

[camero1579]

Same issue, would you please provide a link to the old version so I can downgrade? I can’t seem to find it anywhere

[pavlos]

NoMachine does not provide an archive of past versions. You have to ask them to provide you a link.

I use 9.1.24 which works on all the PC’s.

 

[Britgirl]

We always publish the latest version of the software on our public download servers, and we do this for a reason which is explained here https://kb.nomachine.com/AR08C00250.

We can of course provide you with a temporary link to the earlier version that works if you contact us through the website. First, we need to understand why both of you are encountering this issue.

Camero1579, I assume that you are also using Linux? If so, can you tell us the distro and desktop environment? Please locate the server.cfg on your server machine, and tell us what is written in the following key AvailableSessionTypes.

Pavlos, if you have a chance to do the same (so you would need to update to 9.2 again), the question also applies to you as well 🙂

[pavlos]

grep Available /usr/NX/etc/server.cfg

AvailableSessionTypes unix-remote,unix-console,unix-default,unix-application,physical-desktop,shadow,unix-xsession-default,unix-xdm

 

[Britgirl]

Is that on server 9.2, pavlos?

[pavlos]

No, I use 9.1.24

Should I update to 9.2.18 and look at the server.cfg ?

 

[camero1579]

Raspberry Pi 5: Ubuntu 24.04.3 LTS

Jetson AGX Orin: Ubuntu 22.04 LTS

Both are ARM

AvailableSessionTypes unix-remote,unix-console,unix-default,unix-application,physical-desktop,shadow,unix-xsession-default,unix-gnome,unix-xdm,vpn

I would really appreciate a link to the previous version because NoMachine is a critical component of my project.
Thanks!

[Britgirl]

“Should I update to 9.2.18 and look at the server.cfg ?” If you can, yes.

We would also needs logs from both of you before you go back to the previous version (our Info team is already handling the temporary download link). This would help us immensely because we are unable to reproduce the issue.  Are you able to send us the server-side logs so we can check them, enabling debug first? You can extract them using the instructions here: https://kb.nomachine.com/DT08U00298. It can be done directly from the UI in Settings > Server > Security, scrolling down, setting debug level, restarting, wait a few minutes, then Take logs.

Send them to forum[at]nomachine[dot]com or attach. Please use the title of this topic as the subject of your email. Thanks to both of you!

[pavlos]

server: Linux Mint 22.2 installed 9.2.18, click on main window, no hosts found … after a few seconds it shows hosts.

cat .nx/nxserver.log

19694 19694 2025-07-29 19:22:07 714.461 NXNODE   WARNING! Process ‘/usr/NX/bin/nxclient –monitor –pid 1123’ with pid ‘19715/19715’ finished with signal 11 after 125,230 seconds. You will tell me, it’s a WARNING but signal 11 is a seg fault.

cat .nx/server.log

Many warnings … on /bin/pactl, cold not load PulseAudio for physical session.

Rebooted Mint 22.2 … this time it shows hosts without delay.

I will try with Mint 21.3 and report back.

[pavlos]

tried again on the same server, Mint 22.2 … No hosts found

cat .nx/server.log

2127 2127 2025-11-18 11:19:26 365.597 NXNODE WARNING! Could not load PulseAudio for physical session.
2700 2700 2025-11-18 11:25:35 227.473 Io/Io: WARNING! Descriptor FD#29 type socket still open at exit.
2127 2127 2025-11-18 11:25:56 413.056 NXNODE ERROR! NXParser: error while reading from FD#32.
2127 2127 2025-11-18 11:25:56 413.137 NXNODE ERROR! Error is 104, ECONNRESET.

[pavlos]

This morning on Mint 22.2,
first screenshot no hosts found
sudo /usr/NX/bin/nxserver –restart
second screenshot, hosts found

issue with File Descriptors which has been reported in the past (I looked at the knowledge Base)

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