Problem is no longer reproducible in v8, this Trouble Report is therefore closed. In some rare cases, users may experience temporary slowness once logged in to the Wayland desktop, but the session doesn't freeze any longer.

This issue occurs when Wayland is enabled.

When the user connects to the login window and then logs-in to physical desktop, the NoMachine session becomes unresponsive and the screen blanking is not active on the real monitor of the remote computer. The NoMachine client gets disconnected after some time.