Hello.
If this is default Ubuntu installation it is possible that even if it has disabled Wayland on desktop, it will still be enabled on Login Window. This may be the issue here as NoMachine
cannot reliably capture screen on virtual machines that use Wayland by default.
Please check if the Wayland is enabled on the Login Window.
If it is enabled please follow the article:
https://www.nomachine.com/AR04R01083 (“Connecting to a Wayland-based desktop running in a Linux virtual machine”)
Disabling the Wayland from Login Window is also valid here, as it is not really impacting the system much.
If it is disabled, NoMachine should be working by default there, so we would require logs from the server machine to investigate this problem further.
Please follow the article on how to enable debug:
https://www.nomachine.com/DT10O00163 (“How to gather debug logs for support requests”)
Then please do:
sudo /etc/NX/nxserver –restart
Gather the logs either manually or by executing:
sudo /etc/NX/nxserver –debug –collect
Please send the logs to forum[at]nomachine[dot]com using the title of this forum’s thread as the mail’s subject.
/Mth