How To Install & Configure NoMachine on Rocky Linux 9

[bryan3301]

I had NoMachine working on Rocky Linux 9; however, I was unable to resize the display. I believe this was due to the local display, so, I changed to boot into console instead of GUI (sudo systemctl set-default multi-user.target). This allowed NoMachine to use it’s own X server and I was able to resize.

I then tried to get sound working (it was working until I made the change above). I followed the steps here (https://kb.nomachine.com/AR07T01168) and here (https://forum.nomachine.com/topic/unable-to-get-audio-working-through-pulseaudio-in-almalinux-9).

Now, when trying to connect via NoMachine, I receive an error it cannot connect to a gnome-session. I also no longer am able to get the server’s console to boot to the GUI (even after setting  sudo systemctl graphical.target).

I am not sure where to start. I am hoping someone can point me in the right direction, or even better, supply a good “how to” on making everything work on Rocky Linux 9?

[bryan3301]

UPDATE: Problem Resolved & NoMachine Fully Operational

Repair GUI
Here is how I repaired the GUI and got it working again:

sudo dnf remove -y pulseaudio
sudo dnf group install “Server with GUI”
sudo systemctl set-default multi-user.target
sudo reboot

Enable Audio
After the above, the GUI was working, I then proceeded to make audio work.

Configure pulseaudio to work with PipeWire (https://kb.nomachine.com/AR07T01168)
sudo dnf install pulseaudio –allowerasing
sudo dnf install pulseaudio-utils
sudo /usr/NX/scripts/setup/nxnode –audiosetup

Configure audio (https://forum.nomachine.com/topic/centos-nomachine-server-no-sound)
sudo /usr/NX/bin/nxnode –audiosetup /etc/pulse
sudo /etc/NX/nxserver –restart
sudo reboot

For those what want the full process, start-to-finish, here you go:

Download NoMachine 

link 

Install NoMachine via local RPM 

sudo rpm -i nomachine_8.10.1_1_x86_64.rpm 

Create firewall service entry 

sudo cat << EOF > /etc/firewalld/services/nomachine.xml 

 

    nomachine 

    NoMachine 

    tcp” port=”4000″/> 

 

EOF 

Configure firewalld 

sudo firewall-cmd –permanent –zone=trusted –add-service=nomachine 

sudo firewall-cmd –permanent –zone=home –add-service=nomachine 

sudo firewall-cmd –permanent –zone=internal –add-service=nomachine 

sudo firewall-cmd –permanent –zone=work –add-service=nomachine 

sudo firewall-cmd –reload 

Change to console boot (disable GUI boot). This is so the NoMachine X server is used, which will properly resize the remote display as the client window is resized. 

sudo systemctl set-default multi-user.target 

Configure pulseaudio to work with PipeWire (https://kb.nomachine.com/AR07T01168) 

sudo dnf install pulseaudio –allowerasing 

sudo dnf install pulseaudio-utils 

sudo /usr/NX/scripts/setup/nxnode –audiosetup 

Configure audio (https://forum.nomachine.com/topic/centos-nomachine-server-no-sound) 

sudo /usr/NX/bin/nxnode –audiosetup /etc/pulse 

sudo /etc/NX/nxserver –restart 

Reboot 

[Britgirl]

Hi, glad to know a reinstall fixed the problem and you found the article in our knowledge base about using Pipewire 🙂

A tip about Gnome sessions and not being able to connect, if you come across it again, send the output of sudo grep DefaultDesktopCommand /usr/NX/etc/node.cfg

We checked on stock Rocky Linux 9 and didn’t have any issues. That command shows: DefaultDesktopCommand "/bin/dbus-run-session gnome-session --session=gnome" and works fine.

[Author]

Posts