Sorry,
I was advised to do the follow below:
Please advise…
How to enable audio on systems relying on PipeWire for sound
Up to version 7, NoMachine audio support relies on PulseAudio or ALSA sound server.
On some systems like starting from Fedora 34 and Ubuntu 22.10 the audio subsystem relies on PipeWire for sound as default. On Fedora, PulseAudio is no longer available by default. Ref. Changes/DefaultPipeWire - Fedora Project Wiki. Similar on Ubuntu 22.10.
NoMachine is compatible with PipeWire since v8.2 but only for connections to the physical desktop: NoMachine connects to the PipeWire audio server already running on the system.
NoMachine virtual desktops need instead at least two audio servers: the default audio server already running on the system plus one or more audio server controlling virtual audio devices that are ‘binded’ to it or to them.
It is also necessary to have different sink/source pairs for each audio server. Moreover, audio devices binded to the audio servers must be managed all at the same time. This is the way NoMachine already works with PulseAudio, but at the moment it doesn’t look possible to do the same with Pipewire which sports only one default sink/source for all audio servers and makes available only those audio devices binded to a particular audio server, not all of them.
The suggested workaround is therefore to install and use PulseAudio, some examples are available below.
On Fedora, you can do that by executing in a terminal:
sudo dnf install pulseaudio --allowerasing sudo dnf install pulseaudio-utilsOn Ubuntu:
sudo apt install pulseaudio sudo systemctl disable --global pipewire pipewire-pulse sudo systemctl enable --global pulseaudio sudo systemctl enable --global pulseaudio.service pulseaudio.socketIf PulseAudio is enabled after NoMachine has been installed, execute also this command:
sudo /usr/NX/scripts/setup/nxnode --audiosetup